WO2011048849A1 - Method for checking fuel reduction amount by underwater maintenance management of ship propeller - Google Patents

Method for checking fuel reduction amount by underwater maintenance management of ship propeller Download PDF

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Publication number
WO2011048849A1
WO2011048849A1 PCT/JP2010/060942 JP2010060942W WO2011048849A1 WO 2011048849 A1 WO2011048849 A1 WO 2011048849A1 JP 2010060942 W JP2010060942 W JP 2010060942W WO 2011048849 A1 WO2011048849 A1 WO 2011048849A1
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WIPO (PCT)
Prior art keywords
propeller
fuel
roughness
ship
underwater
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PCT/JP2010/060942
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French (fr)
Japanese (ja)
Inventor
悟 高森
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Takamori Satoru
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Publication of WO2011048849A1 publication Critical patent/WO2011048849A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/06Cleaning devices for hulls
    • B63B59/08Cleaning devices for hulls of underwater surfaces while afloat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63CLAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/52Tools specially adapted for working underwater, not otherwise provided for
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/80Management or planning
    • Y02P90/84Greenhouse gas [GHG] management systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00Maritime or waterways transport

Definitions

  • the present invention relates to a method for confirming a fuel reduction amount in a fuel reduction method for performing maintenance management in which a propeller of a ship in service is subjected to roughness measurement and underwater polishing in water.
  • Ship transportation is a transportation method that emits less carbon dioxide in the transportation sector, enables mass transportation, and has a larger transportation volume than other transportation means.
  • the main fuel reduction measures at the time of ship operation are examination of operation method, cargo volume and operation route, implementation of decelerating operation, hull maintenance for maintaining performance, and maintenance inspection of various equipment.
  • Factors that reduce the fuel efficiency of a ship in service include external factors such as tidal currents, sea conditions, and weather, and internal factors such as loading, overload operation and operation methods, and various ship facilities. Some are caused by deterioration.
  • the submerged part outside the ship is one of the major factors that consume a lot of fuel because of the increased resistance of water with deposits over time.
  • Hull paint which is a countermeasure against deposits on the outer skin of the hull, has been remarkably developed in recent years, and paint methods and paints have been developed that are environmentally friendly and that do not adhere to deposits for several years. The influence of the deposits on the plate is decreasing year by year.
  • propellers no technology has yet been developed to prevent paint and paint deposits, and usually only propeller surfaces are cleaned and polished to prevent deposits and restore performance when docked.
  • the surface of the propeller immediately after leaving the dock is bare, and the surface roughness of the propeller is usually Ra3 ⁇ m to Ra6 ⁇ m. If such a base is a bare propeller, marine deposits will begin to adhere to the propeller surface without waiting for a few weeks after the start, causing fuel efficiency to deteriorate.
  • the propeller is always rotating to gain propulsion. Therefore, the amount of area in contact with water is very large compared to other hull parts, and the dirt of the propeller has a great influence on the propulsion of the ship. Although it depends on the ship, it usually takes 2 to 3 years to enter the regular maintenance dock, and since there is almost no propeller maintenance from dock dock to dock dock, the propeller dirt gradually It is a major factor that accumulates and causes an increase in fuel consumption.
  • Propeller maintenance can be done by putting it in a dock or cleaning or polishing the surface of the propeller with a diver in the water.However, if you enter the dock, it will cause a loss of sales and a large amount of docking costs due to suspension of operation. It is rare to dock only for maintenance and maintenance management.
  • the underwater polishing machine can polish the roughness of the propeller surface to about Ra2 ⁇ m to Ra0.1 ⁇ m in water, and an underwater roughness meter that can measure the roughness to Ra below 0.01 ⁇ m in water.
  • the underwater polishing machine is a material that has water permeability and elasticity, and is a portable type that can rotate at high speed and abut against the surface of the propeller in the water of the ship by negative pressure to polish the surface of the propeller to Ra2 ⁇ m to Ra0.1 ⁇ m.
  • the underwater roughness meter is an underwater grinding machine having a disk, and is a roughness meter that can measure the roughness of the surface of the propeller in water and determine the roughness that can determine the performance of the propeller as a numerical value.
  • a propeller polisher that can polish a propeller of a moored ship to Ra2 ⁇ m or less in water, or Ra0.5 ⁇ m that is particularly difficult to attach marine deposits, and an underwater roughness meter that can measure roughness in Ra 0.01 ⁇ m units
  • the surface of the propeller of the ship moored on the quay was polished in water, and after polishing was completed, the propeller was rotated to the surface and the roughness of the polished surface was measured.
  • the surface roughness of the propeller polished in water was Ra 0.5 ⁇ m or less on average.
  • the surface of the propeller had a roughness of Ra 0.1 ⁇ m depending on the location.
  • the surface roughness of the specimen was Ra 0.2 ⁇ m.
  • Propeller polishing was performed in water, and the roughness of the polished part of the propeller was measured at the dock after 70 days.
  • the roughness of the portion polished to about Ra 0.3 ⁇ m was an average of 0.6 ⁇ m Ra
  • the roughness of the portion polished to about Ra 1 ⁇ m was an average of 7 ⁇ m Ra.
  • the surface roughness of the propeller at the time of launch is usually Ra3 ⁇ m to Ra6 ⁇ m. It is considered difficult to verify to what accuracy the roughness increases to a more efficient propeller and the effect of delaying adhesion to marine deposits.
  • the roughness of the propeller before the verification is measured to understand the propeller performance, various data on ship operations at the time of operation, and the data on the sea condition and weather for the effects of performance deterioration due to the contamination of the propeller
  • the performance of the propeller at the time of service can be grasped.
  • the current propeller performance is determined, and compared with the predicted performance deterioration due to dirt, the fuel reduction amount can be confirmed, and the carbon dioxide emissions corresponding to the fuel reduction amount It will be possible to prove the reduction.
  • Patent document 1 is a ship propulsion system, and as an energy saving measure in a ship propulsion device, an energy saving measure that increases energy saving efficiency with an optimum equipment configuration of equipment inside the hull can be seen. There is no description about the fuel consumption reduction technology that is performed by maintaining and managing.
  • Patent Document 2 there is a method for increasing the fuel efficiency by making the hull structure more efficient, but there is no description of a fuel consumption reduction technique that is performed by maintaining and managing the propeller in water.
  • Patent Document 3 is an energy-saving method that increases the efficiency by reducing the resistance of the hull by using air bubbles, etc., as represented by the energy-saving device of the ship. There is no description about the fuel consumption reduction technology to be performed.
  • Patent Document 4 is a secular change monitoring device for a marine propulsion plant, which is a method of grasping the secular change due to deterioration by a method of grasping the rotational speed of a propeller and the current state of marine fuel, and maintaining and managing the propeller in water. There is no description of fuel efficiency reduction technology.
  • Patent document 5 is a system for providing a voyage plan that reduces the environmental load, and is a system that accurately operates in consideration of the influence of weather and sea conditions. Is not described.
  • Patent Document 6 is an engine performance analysis method for ships and the like, and is an engine performance analysis method for improving ship maneuverability. There is no description about the fuel consumption reduction technology that maintains and manages the propeller underwater.
  • Patent document 7 is a ship operation recording apparatus, which is an operation recording apparatus related to ship operation records. However, there is no description about a fuel consumption reduction technique performed by maintaining and managing a propulsion device in water.
  • Patent Document 8 is a fuel consumption rate display device for transportation equipment, which transmits current consumption in real time and is not intended to reduce fuel. There is no description of fuel efficiency reduction technology.
  • the underwater polishing apparatus of Patent Document 9 is an apparatus that polishes underwater by remote operation instead of human power, and is a polishing apparatus that cannot polish a propeller of a swaying ship. There is a big difference in that we can not only polish the propeller of a swaying ship, but also prove the fuel reduction by measuring the roughness after polishing and determining the propeller performance.
  • Non-Patent Document 1 a service that can be performed by changing the specified route by adding the analysis data based on weather and sea conditions to the data operated by grasping the performance deterioration due to the dirt of the propeller is provided.
  • This is an example of a technology that can be used for analysis of fuel reduction using data excluding underwater maintenance management of propellers, and is generally known as fuel consumption related to operations. ing.
  • Non-Patent Document 2 describes the deterioration of the propeller due to secular changes and the deterioration of the roughness at the time of service and the calculation formula based on marine weather, etc. This is a reference that makes it possible to easily predict the deterioration of the roughness of propellers by taking into account data such as the service area.
  • the fuel consumption of a ship sailing in the ocean changes every time due to differences in various conditions such as sea conditions, weather, seasonal changes, loading and operating conditions.
  • various conditions such as sea conditions, weather, seasonal changes, loading and operating conditions.
  • the fuel consumption of the ship has various factors that affect the increase and decrease, even if the fuel reduction measures are taken, it is difficult to determine the reduction amount by the fuel reduction measures implemented at that time.
  • the surface roughness of the propeller at the time of launch is usually said to be Ra 3 ⁇ m to Ra 6 ⁇ m. It is considered difficult to verify the accuracy to which the roughness of the propeller becomes more efficient and the effect of delaying the adhesion to marine deposits, but fuel loss due to the surface roughness of the propeller Efficiency is well known.
  • the present invention was devised in view of the above points, and it is possible to confirm the amount of fuel reduction that can perform maintenance of a propeller underwater while the ship is floating on the surface of the water without being docked.
  • the challenge is to provide a method.
  • a fuel reduction amount confirmation method comprising: maintenance management means for operating and reducing fuel; and fuel consumption management means for calculating fuel consumption.
  • the fuel consumption management means measures the roughness of the propeller before verification, grasps the propeller performance, and results in maintenance management in which the propeller is kept in good condition underwater, and when maintenance management is not performed Collect and analyze various data affected by the deposits attached to the propellers inside, predict the contamination of the propeller in service due to the growth of deposits and attached organisms, and fuel due to the deterioration of the propeller efficiency caused by the contamination
  • a method for confirming the amount of fuel reduction, characterized in that the increase can be predicted and compared.
  • the fuel consumption management means measures the roughness of the propeller surface in water and the fuel consumption of the roughness of the propeller roughness of the ship in service, which is subject to the fuel reduction confirmation method by the maintenance management means by polishing between Ra1 ⁇ m and Ra30 ⁇ m
  • the fuel reduction amount confirmation method characterized by being able to predict every Ra 1 ⁇ m.
  • the fuel consumption management means influences the roughness measurement results, fuel consumption, and propeller roughness during the period to verify the fuel reduction amount confirmation method by the maintenance management means by measuring the roughness of the propeller surface in water
  • a fuel characterized by being able to constantly calculate the roughness prediction of the ship propeller in service by constantly collecting and analyzing various data, and to calculate the fuel reduction and carbon dioxide emission reduction in real time during service. Reduction amount confirmation method.
  • the amount of unused fuel calculated and confirmed by the fuel consumption management means can be converted into carbon dioxide emissions, received as a carbon dioxide emission reduction certificate, and operated as a credit. To check the amount of fuel reduction.
  • the fuel reduction amount confirmation method can convert the amount of fuel reduction using a computer, so it can be converted into the amount of CO2 emission reduction, and the CO2 emission reduction certificate can be issued as the basis for CO2 emission reduction. Can be operated with credit.
  • the amount of fuel reduction and CO2 emission reductions of ships in service can be confirmed in real time by management using a computer by data communication, so that operation management can be made more detailed and carbon dioxide emissions can be reduced.
  • Reduction certificates can be used in various transaction formats.
  • the block diagram of the fuel reduction amount confirmation method The enlarged view of the maintenance management means of the fuel reduction amount confirmation method. Comparison chart of fuel consumption during underwater maintenance management of propeller and normal operation. Fuel efficiency chart by propeller surface roughness (a) Propeller efficiency estimation curve (b) Propeller surface roughness and fuel efficiency. The operation
  • the method for confirming the amount of fuel reduction by underwater maintenance management of a ship propeller includes maintenance management means 12 that measures and polishes the roughness of the propeller surface underwater, and fuel reduction by confirming fuel reduction.
  • the maintenance management means 12 for measuring and polishing the roughness of the propeller surface in water is a means for judging the performance of the propeller by managing the roughness of the propeller of the ship in service underwater. This is a maintenance management means that measures the roughness of the propeller surface using a meter, and if the roughness is poor, polishes the propeller surface in water to maintain the propeller in good condition.
  • Ra1 ⁇ m is the minimum value for verification of maintenance management means for polishing using an underwater roughness meter that can measure the roughness of the propeller surface in water and an underwater polisher that can polish the surface of the propeller to Ra1 ⁇ m or less in water. This value is a value that takes into account the current polishing technology. If the polishing technology improves, that value can also be adopted.
  • the maximum roughness verification value is Ra 30 ⁇ m. This numerical value employs Ra 30 ⁇ m, which is close to grade F, which is the roughest roughness of the Lubert gauge used as the reference roughness sample plate.
  • the range of roughness of the propeller to be maintained is between Ra 0 ⁇ m and Ra 30 ⁇ m.
  • the fuel consumption management means that verifies the fuel reduction amount and calculates the carbon dioxide emission reduction amount is the fuel usage by the maintenance management means that measures and polishes the surface of the propeller in water, and the fuel due to the contamination of the propeller Propeller surface underwater by collecting and analyzing various data that affect the increase, cargo information related to operations, and various data related to ship age and ship-specific propeller performance that is unique to the ship.
  • the fuel when the maintenance management means that performs roughness measurement and polishing is not performed is predicted and calculated, and the fuel consumption is compared with the fuel consumption of the maintenance management means that measured and polished the surface of the propeller in water. It is a fuel consumption management means that can be confirmed to have been reduced.
  • the CO2 emission reduction certificate issuance means that can receive the carbon dioxide emission that the reduced fuel is expected to emit as a carbon dioxide emission reduction certificate, and measures the roughness and polishing of the surface of the propeller in water Create a carbon dioxide emission reduction certification project and become a carbon dioxide emission reduction certification body in order to receive certification of carbon dioxide emission scheduled to be released by fuel that has been confirmed to be reduced by maintenance management means and fuel consumption management cost means Carbon dioxide emission that the CO2 emission reduction certification project has been implemented as approved by the maintenance management means that measures and polishes the surface of the propeller in water and the fuel consumption management cost means. This is a means for issuing a carbon dioxide emission reduction certificate, which is verified by a volume reduction certification authority and issued with a carbon dioxide emission reduction certificate.
  • the fuel reduction amount confirmation method consists of measuring or predicting the roughness of the propeller to be verified during the fuel reduction amount check period or after the completion of the check, to grasp the propeller performance, and various data and propellers related to ship operation at the time of service.
  • the propeller performance is predicted by grasping the state of dirt on the propeller of the ship in service.
  • the current propeller performance is determined, and compared with the predicted performance deterioration due to dirt, the fuel reduction can be confirmed, and carbon dioxide equivalent to the fuel reduction This is a method for confirming the amount of fuel reduction that will be able to prove emission reduction.
  • the fuel reduction amount check method is a maintenance management means that measures the roughness of the propeller surface in water at the start of the period for checking fuel reduction, at the time of inspection and at the end, and polishes in water when the roughness is poor.
  • the maintenance management means that measures the roughness before and after and operates the propeller in good condition to reduce fuel and collects various data related to the maintenance management and operation of the propeller, and is managed by the computer of the fuel consumption management means By collecting, inputting, and analyzing various data as necessary in the program, the resistance loss due to propeller contamination is immediately calculated, and when propeller maintenance management is performed underwater and underwater maintenance management is not performed
  • the fuel consumption management means that can show the difference in the fuel consumption that is immediately compared to You can receive carbon dioxide emissions reduction certificates carbon dioxide emissions corresponding to the fuel as a reducing quantity, fuel reduction confirmation method characterized by having a reduced certificate issuing means carbon dioxide emissions.
  • Various types of data are data on events that are expected to affect the factors of propeller contamination or propeller efficiency, such as berthing period, cargo handling period, freshwater navigation period, propeller speed, weather, water temperature, and temperature.
  • Data on marine deposits that affect propeller soiling, transparency, sea area, draft, etc., resistance loss coefficient of hull skin coating, deterioration factor coefficient for ship-specific equipment and ship-specific propeller efficiency It affects the propeller efficiency inherent to the target vessel, such as coefficient, vessel operation data, fuel consumption, and roughness measurement data of each part of the propeller (the above and the following are also described as various data) ). It also includes propeller predicted roughness data analyzed with various data.
  • the basic coefficient when the water temperature is 25 degrees and the propeller is in the water for 1 hour, the coefficient that affects the increase in resistance of the propeller when the marine deposit grows is based on the water temperature (temporary value 0 degree) Each time the temperature rises, the basic coefficient for reducing the efficiency of the propeller is (temporary numerical value 0.0001). Such a basic coefficient is verified and created in the project. If the basic coefficient is too small, it may be determined that the influence of the roughness of the propeller is small, and the basic coefficient may be zero. As another example, a basic coefficient whose performance can be analyzed every 1 ⁇ m when the roughness of the propeller is between Ra 1 ⁇ m and Ra 30 ⁇ m is created. In addition, basic factors that affect the roughness and efficiency of propellers not mentioned in the examples may be added.
  • the computer of the fuel consumption management means of the fuel reduction amount confirmation method inputs a program that can predict and calculate the fuel consumption for each Ra 1 ⁇ m between the roughness of Ra 1 ⁇ m and Ra 30 ⁇ m of the propeller by inputting various data of the ship concerned
  • a program that can predict the roughness of the propeller by inputting the basic coefficient of the previous item of the various data of the planned route planned to be operated in advance so that the propeller roughness does not exceed Ra 30 ⁇ m, By inputting various data, it is possible to predict the roughness of the ship and instruct maintenance of underwater propeller polishing.
  • FIG. 1 is a configuration diagram of a fuel reduction amount confirmation method. It is also a conceptual diagram of an example in which the carbon dioxide emission reduction certificate is issued by the underwater maintenance management means, the fuel consumption management means, and the carbon dioxide emission reduction certificate issuing means of the ship propeller.
  • FIG. 2 is an enlarged view of the maintenance management means of the configuration diagram of the fuel reduction amount confirmation method of FIG. It is an enlarged view in which an inspection diver receives an instruction from an inspector and measures the surface roughness of the propeller, and an inspection auxiliary diver photographs the situation with an underwater camera and sends an image to the inspector. The inspector can not only cause the diver to inspect and measure the roughness, but also use an underwater polishing machine to perform maintenance for polishing the surface of the propeller 1. A case where roughness measurement is performed using the roughness measurement auxiliary box 3 is shown as an example. The inspection diver 6 measures the roughness of the propeller with the underwater roughness meter 2 using a roughness meter that can be used in the aerial part of the roughness measurement box in water.
  • the roughness measurement auxiliary box 3 attached to the propeller surface 1 has a structure in which a propeller measurement surface and a lower part are open, has a strength capable of withstanding pressure difference and buoyancy with the outside, and has a structure in which gas is accumulated inside. Yes.
  • the roughness measuring auxiliary box 3 is made of a material that can be checked from the outside, so that the inspection diver 6 can measure the roughness while checking the roughness measuring condition in water.
  • the roughness measuring auxiliary box 3 is provided with a reference roughness plate 4 so that the underwater roughness meter brought into the water is operating normally or the operation of the underwater roughness meter can be confirmed in the water.
  • the underwater video camera and the communication device 5 are used by the inspector 9 to check the underwater situation with the video and communication device.
  • the inspection diver 6 measures the roughness of the propeller surface 1 using the underwater roughness meter 2 and the roughness measuring auxiliary box 9.
  • the inspection auxiliary diver 7 assists the inspection diver 6, and assists the roughness measurement of the propeller surface and photographs the inspection situation.
  • the monitor TV 8 can confirm the roughness measurement status being performed underwater from the video sent from the underwater video camera 5.
  • the inspector 9 instructs the inspection diver 6 to measure the roughness when measuring the roughness of the propeller surface 1 by using the underwater communication device, and measures the roughness.
  • the usage roughness measurement position and roughness measurement status and the numerical value and status of the roughness displayed on the underwater roughness meter 2 are photographed.
  • the inspector 9 confirms the image on the monitor TV 8 on the ship.
  • the work boat 10 is, for example, a small boat that can load an underwater propeller inspection device and a maintenance polishing device and can also be used for diver work.
  • the carbon dioxide emission reduction certification body 11 confirms the examination and implementation upon receiving the application for the carbon dioxide emission reduction certification project by the maintenance management means that measures and polishes the surface of the propeller in water and the fuel consumption management cost means. It is an organization that can issue a certificate of carbon dioxide emission reduction.
  • the maintenance management means 12 for measuring and polishing the roughness measures the roughness of the propellers of the moored ship with the underwater roughness meter 2 by the diver and gives the inspector 9 who is inspecting the work ship 10 underwater.
  • the inspection assistant diver 7 informs the inspector 9 of the state of the propeller by video.
  • the fuel consumption management means 13 uses the inspection diver 6 of the maintenance management means 12 that measures and polishes the roughness of the propeller surface in water by using the inspection diver 6 of the inspector 9 on the ship that receives the fuel reduction confirmation.
  • the inspector 9 collects and analyzes the measurement data and various data owned by the ship that receives the fuel reduction amount confirmation to determine the fuel reduction amount.
  • the inspector 9 sends various data to the carbon dioxide emission reduction certification body 11, and based on the data, the carbon dioxide emission reduction certification body 11 implements the carbon dioxide emission reduction project based on the carbon dioxide emission reduction project. It is possible to issue a certificate of carbon dioxide emission reduction after confirming that the fuel has been reduced.
  • the carbon dioxide emission reduction certificate issuance means 14 is a variety of data issued by a ship that has applied for a carbon dioxide emission reduction certification project that performs maintenance management means 12 that measures and polishes the roughness of the propeller surface in water.
  • the carbon dioxide emission reduction certification body 11 examines and confirms the fuel reduction amount, and can issue the carbon dioxide emission reduction certificate 16 corresponding to the confirmed fuel reduction amount. .
  • the inspector 9 confirms various data and fuel consumption confirmed by the maintenance management means 12 and the fuel consumption management cost means 13 for measuring and polishing the roughness of the propeller surface in water, and the carbon dioxide emission reduction certification body 11 Various data is sent to the terminal using the data communication 15. Further, by using this data communication 15, various data are constantly sent from the ship to an onshore management department or the like, so that the situation of the ship can be shared, and maintenance management that leads to more effective fuel reduction can be performed.
  • FIG. 3 is a comparison diagram of fuel consumption during underwater maintenance management and normal operation of the propeller, where the vertical axis represents fuel consumption and the horizontal axis represents the time from the start of service to the end of service. A comparison of the amount of fuel consumed when operating without propeller maintenance and the amount of fuel consumed when operating the propeller with good roughness and propeller maintenance is shown.
  • FIG. 4 is a fuel efficiency diagram according to the surface roughness of the propeller.
  • (a) Propeller efficiency estimation curve (b) Propeller surface roughness and fuel efficiency. It is also a reference figure of a document in which the ratio of the fuel loss becomes 6% or more when the surface roughness of the propeller exceeds Ra 30 ⁇ m. (Quoted from the technical data on the website of Nakashima Propeller Co., Ltd., quoted from 1264640202140_0.html), In particular, FIG. 4 (b) shows the relationship between the surface roughness of the propeller and the fuel efficiency, and the horizontal axis shows the fuel loss ratio with respect to the roughness of the A to F sample plates of the Lubert gauge which is a sample plate of the standard roughness. .
  • the range of the surface roughness of the propeller is set to Ra2 ⁇ m or less Ra2 ⁇ m to Ra5 ⁇ m, Ra5 ⁇ m to Ra10 ⁇ m, and Ra5 ⁇ m is set to Ra30 ⁇ m for each unit. It can also be confirmed.
  • the propeller efficiency it is possible to determine the amount of fuel reduction compared to the roughness value obtained when maintenance inspection is not performed.
  • FIG. 5 shows an operation flow of the program of the fuel consumption management means 13. The flow of maintenance of the propeller constituting the program of the fuel consumption management means 13 is compared with the flow of normal operation.
  • FIG. 5 shows a flow in which the propeller surface roughness is managed so as not to exceed Ra 30 ⁇ m using the maintenance management means 12 that measures and polishes the roughness of the propeller surface in water. Also, the management status, fuel usage, and various data during operation are collected and sent to the computer of the fuel consumption management means 13.
  • FIG. 5 The right side of FIG. 5 is a diagram showing the flow when the aircraft is operated without propeller management. Roughness at the time of service is measured or predicted, and roughness after service is measured or predicted. Propellers get dirty over time. Propeller roughness, which gradually becomes dirty from service to completion of service, is predicted by inputting various data of the ship in operation, and the performance deterioration due to dirt on the propeller roughness is verified in advance.
  • FIG. 5 shows that fuel consumption due to the influence of the roughness of the propeller can be calculated and compared based on various data collected in the operation state on the left side of FIG.
  • FIG. 6 is a work flow diagram for issuing a carbon dioxide emission reduction certificate by underwater maintenance management of a propeller. The flow from the confirmation of fuel reduction by underwater maintenance management of the propeller of the fuel reduction amount confirmation method to the issuance of the carbon dioxide emission reduction certificate by the carbon dioxide emission reduction certification project is shown. Examples will be described below.
  • Applicant certified carbon dioxide emission reduction certification project to CO2 emission reduction certification project certification body 11 to measure CO2 emission reduction of fuel reduction amount confirmation method by underwater maintenance management to measure and polish ship propeller roughness Submit to the institution 11 and receive certification from the certification body.
  • the CO2 emission reduction certification project by underwater maintenance management which performs roughness measurement polishing of ship propellers, uses fuel consumption management means 13 and inputs various data operated by the ship receiving the propeller status and verification to the computer
  • the estimated amount of fuel consumption reduction is calculated, and the official certification body confirms and confirms it as the amount of fuel reduction, and the carbon dioxide emission from the fuel for the reduction is certified as the amount of carbon dioxide emission reduction. receive.
  • the inspector 9 goes to the application ship and the propeller is not maintained and managed underwater Based on the program of the fuel consumption management means 13 that can calculate the difference when it is done, the propeller's underwater maintenance management is taking measures to prevent the increase in fuel consumption, the application ship records the operation records and various necessary data To confirm that the increase in fuel consumption can be predicted, and to confirm that the CO2 emission reduction certification project can be executed.
  • the program of the fuel consumption management means 13 in the carbon dioxide emission reduction certification project is to determine the fuel consumption by measuring the roughness after the end of the period and collecting and analyzing various data according to the roughness result. In some real-time, by collecting and analyzing various data affecting the roughness, it is possible to always calculate the roughness prediction of the in-service ship propeller and to determine the amount of fuel reduction during operation.
  • the applicant performs underwater maintenance management of the propeller based on the program of the fuel consumption management means 13, and implements the carbon dioxide emission reduction certification project by the carbon dioxide emission reduction system for the period.
  • CO2 emission reduction certification project The certification body dispatches an inspector 9 to the application ship, and the inspector 9 confirms various data based on the carbon dioxide emission reduction certification project by the fuel reduction confirmation method by underwater maintenance management of the propeller. Confirm that the measures to prevent the increase in fuel consumption by underwater maintenance management of the propeller are being taken, and that the program of the fuel consumption management means 13 is properly managed and operated, and authenticate the fuel reduction amount. Issue a carbon dioxide emission reduction certificate corresponding to the reduction amount.
  • FIG. 7 shows the relationship between hull resistance and fuel consumption.
  • HTML //WWW.NMRI.go.jp/main/cooperation/deme/zisseki/JSE-couru.pdf
  • Rt x Vs is the work the ship does, that is, the effective horsepower.
  • T (propeller thrust) x Va is the work that the propeller does, and is called thrust horsepower.
  • the ratio of effective horsepower and thrust horsepower is called hull efficiency. The smaller the flow velocity Va near the propeller, the higher the hull efficiency. Therefore, a propeller is placed near the slow stern. With a tanker, if a propeller is attached to the bow, the energy saving effect will be lost by nearly 30% compared to a propeller attached to the stern. However, even if it is attached to the stern, hull efficiency will decrease if it is put out of the hull like a 2-axis ship. (Quote here)
  • the propeller efficiency is the efficiency between the thrust horsepower and the transmission horsepower as shown in FIG. 7 and the quoted text. In the next paragraph, we will discuss the factors that cause a decrease in propeller efficiency.
  • the fuel injection amount per hour for the engine is constant, so the fuel consumption per distance when traveling a certain distance D is proportional to the required time. That is, it is inversely proportional to the propeller efficiency. Therefore, if a certain propeller efficiency ⁇ p ′ is set and the propeller efficiency calculated from the measured roughness of the propeller surface is ⁇ p, the fuel consumption per cruising distance is ( ⁇ p '/ ⁇ p) times.
  • Fuel reduction as a new fuel reduction method for ships in service can be confirmed, and diving work for underwater maintenance of propellers will increase.

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Abstract

The purpose of the invention is to provide a method which reduces fuel consumption and carbon dioxide discharge by performing propeller maintenance management without docking a ship in service. In this regard, there is disclosed a method for checking the amount of fuel reduced as a result of underwater propeller maintenance management such that fuel is reduced by implementing a propeller maintenance management means for performing operations wherein the roughness of a propeller is periodically measured under water without docking a ship in service and wherein, if the roughness is unsatisfactory, underwater polishing work is carried out to keep the propeller in a satisfactory state. The method for checking the amount of fuel reduced is such that various data regarding operation and propeller stains while in service are incorporated into a computer program for checking a fuel reduction amount, resulting in the fuel reduction amount being permitted to be checked.

Description

[規則26に基づく補充 14.07.2010] 船舶プロペラの水中保守管理による燃料削減量確認方法[Replenishment based on Rule 26 14.07.2010] Confirmation method of fuel reduction by underwater maintenance management of ship propeller
本発明は、就航中の船舶のプロペラを、水中で粗度測定と水中研磨をおこなう保守管理を行う燃料削減方法の燃料削減量を確認する方法に関する。 The present invention relates to a method for confirming a fuel reduction amount in a fuel reduction method for performing maintenance management in which a propeller of a ship in service is subjected to roughness measurement and underwater polishing in water.
船舶輸送は輸送部門において二酸化炭素排出量が少ない輸送方法であり、大量輸送ができ、輸送量も他の輸送手段と比べて多い。 Ship transportation is a transportation method that emits less carbon dioxide in the transportation sector, enables mass transportation, and has a larger transportation volume than other transportation means.
今全世界中で化石燃料の削減が求められている。化石燃料を多く使う船舶輸送の燃料削減問題は切実であり、新たな燃料削減の技術が求められている。 There is now a need to reduce fossil fuels worldwide. The problem of fuel reduction in ship transportation that uses a lot of fossil fuel is urgent, and new technology for fuel reduction is required.
海運業界では、船体改良、省エネルギー運航及び新しい省エネルギー対策の技術開発などいろいろな方法で燃料削減が進められている。 In the shipping industry, fuel reduction is being promoted in various ways, including hull improvement, energy-saving operations, and new energy-saving technology development.
船舶運航時の主な燃料削減対策としては、運行方法・積荷量・運行経路の検討・減速運転の実施、又性能維持のための船体整備・各種機器の保守点検整備などである。 The main fuel reduction measures at the time of ship operation are examination of operation method, cargo volume and operation route, implementation of decelerating operation, hull maintenance for maintaining performance, and maintenance inspection of various equipment.
就航中の船舶の燃料効率低下要因には、外的要因となる、潮流・海象・気象などに起因するもの、又内的要因となる、積み荷・過負荷運転・運行方法及び船舶の諸設備の劣化などに起因するものがある。 Factors that reduce the fuel efficiency of a ship in service include external factors such as tidal currents, sea conditions, and weather, and internal factors such as loading, overload operation and operation methods, and various ship facilities. Some are caused by deterioration.
外的要因対策では、就航海域の気象・海象などを観測及び予測し、運行経路及び速度の変更などを指示して効率よく運航させるサービスなどにより、燃料削減の効果を上げている。又内的要因対策では低速運転、積み荷の減量、運行管理及び船舶諸設備の保守整備を強化する方法などで燃料削減対策が行われ効果を上げている。 As measures against external factors, the effect of fuel reduction is improved by services such as observing and forecasting the weather and sea conditions in the service area, and instructing the change of the operation route and speed to operate efficiently. In addition, as a countermeasure against internal factors, fuel reduction measures have been taken, such as low-speed operation, load reduction, operation management and methods for strengthening maintenance of various ship facilities.
船舶諸設備の、船内部、船体気中部の保守整備は主に就航中に行われているが、船体没水部及び推進機プロペラの保守整備はドック入渠時に主に行われている。 Maintenance of the ship's interior and inside of the hull is carried out mainly during service, but maintenance of the submerged part of the hull and propeller propeller is carried out mainly at the dock entrance.
船舶外部の没水部は時間とともに付着物が付き水の抵抗が増すため、燃料を多く消費する大きな要因の一つとなっている。 The submerged part outside the ship is one of the major factors that consume a lot of fuel because of the increased resistance of water with deposits over time.
船体外板部の付着物対策である船体塗料は近年開発が目覚しく、環境に留意された塗料で数年に亘ってもほとんど付着物が着かない塗装方法及び塗料などが開発されており、船体外板部の付着物による影響は年々少なくなって来ている。しかし、プロペラについては塗料及び塗装の付着物対策となる技術がまだ開発されておらず、通常はドック入渠時に付着物対策と性能回復となるプロペラ表面の清掃および研磨がなされているだけである。 Hull paint, which is a countermeasure against deposits on the outer skin of the hull, has been remarkably developed in recent years, and paint methods and paints have been developed that are environmentally friendly and that do not adhere to deposits for several years. The influence of the deposits on the plate is decreasing year by year. However, for propellers, no technology has yet been developed to prevent paint and paint deposits, and usually only propeller surfaces are cleaned and polished to prevent deposits and restore performance when docked.
ドックを出た直後のプロペラの表面は素地がむき出しで、プロペラの表面粗度は通常Ra3μm~Ra6μmである。このような素地がむき出し状態のプロペラであれば、出渠後数週間を待たずしてプロペラ表面に海洋性付着物が着き始め、燃料効率悪化の要因となっている。 The surface of the propeller immediately after leaving the dock is bare, and the surface roughness of the propeller is usually Ra3 μm to Ra6 μm. If such a base is a bare propeller, marine deposits will begin to adhere to the propeller surface without waiting for a few weeks after the start, causing fuel efficiency to deteriorate.
航海中プロペラは推進力を得るため常に回転している。そのため水と接触する面積量は他の船体部と比べ非常に大きく、プロペラの汚れは船の推進に大きな影響を与える。船舶にもよるが法定整備の定期ドックに入るのは通常2年~3年と長期周期であり、ドック出渠からドック入渠までほとんどプロペラの保守整備が行われないので、プロペラの汚れは徐々に蓄積され燃料消費量の増大を招く大きな要因となっている。 During the voyage, the propeller is always rotating to gain propulsion. Therefore, the amount of area in contact with water is very large compared to other hull parts, and the dirt of the propeller has a great influence on the propulsion of the ship. Although it depends on the ship, it usually takes 2 to 3 years to enter the regular maintenance dock, and since there is almost no propeller maintenance from dock dock to dock dock, the propeller dirt gradually It is a major factor that accumulates and causes an increase in fuel consumption.
プロペラの付着物による抵抗があまりにも大きくなると、エンジン負荷が大きくなりすぎ、運航に支障をきたすようになる。プロペラの整備を行うにはドックに入れるか、水中でダイバーによりプロペラ表面の清掃又は研磨を行うなどの方法があるが、ドック入りすると運航停止による売上損失と多額のドック費用が発生するので、プロペラの整備及び保守管理のためだけにドック入りさせることは少ない。 If the resistance caused by the propeller deposits becomes too great, the engine load will become too great and hinder the operation. Propeller maintenance can be done by putting it in a dock or cleaning or polishing the surface of the propeller with a diver in the water.However, if you enter the dock, it will cause a loss of sales and a large amount of docking costs due to suspension of operation. It is rare to dock only for maintenance and maintenance management.
水中でプロペラ表面の粗度をRa2μm~Ra0.1μm程度まで研磨できる水中研磨機と水中でRa0.01μm以下の単位までの粗度が計測できる水中粗度計を開発した。水中研磨機は通水性と弾力性を持つ素材で、高速で回転して船舶の水中にあるプロペラの表面に負圧により当接してプロペラの表面をRa2μm~Ra0.1μmまで研磨できる可搬式の研磨ディスクを有する水中研磨機で、水中粗度計は水中でプロペラの表面の粗度を測定してプロペラの性能を確定できる粗度を数値で表すことができる粗度計である。 We have developed an underwater polishing machine that can polish the roughness of the propeller surface to about Ra2μm to Ra0.1μm in water, and an underwater roughness meter that can measure the roughness to Ra below 0.01μm in water. The underwater polishing machine is a material that has water permeability and elasticity, and is a portable type that can rotate at high speed and abut against the surface of the propeller in the water of the ship by negative pressure to polish the surface of the propeller to Ra2μm to Ra0.1μm. The underwater roughness meter is an underwater grinding machine having a disk, and is a roughness meter that can measure the roughness of the surface of the propeller in water and determine the roughness that can determine the performance of the propeller as a numerical value.
船舶をドックに入れてプロペラ研磨による整備を行った場合、研磨後、粗度の測定を行いプロペラの状態を数値で把握している。しかし水中プロペラ研磨の場合は、研磨をしても、水中で、粗度の測定値を数値で表せる水中粗度計がなかった。今までは標準粗度板であるルパートゲージで粗度を確認するか映像及びダイバーの主観による判断で、水中のプロペラ表面の粗度と研磨状態を判断していた。 When a ship is put into a dock and maintenance is performed by propeller polishing, the roughness is measured after polishing and the state of the propeller is grasped numerically. However, in the case of underwater propeller polishing, there was no underwater roughness meter capable of expressing the measured value of the roughness in water even when polishing. Until now, the roughness of the surface of the propeller in water and the polishing state have been determined by checking the roughness with a rupert gauge, which is a standard roughness plate, or by subjective judgment of the image and the diver.
係留中の船舶のプロペラを、水中でRa2μm以下、又は特に海洋性付着物が付きにくいRa0.5μm程度まで研磨できるプロペラ研磨機と、水中でRa0.01μm単位の粗度測定が出来る水中粗度計を使用することにより、水中のプロペラの状態を数値で把握できるようになり、就航中の船舶をドックに入れることなく水中にあるプロペラの性能判断と保守管理が行えるようになった。 A propeller polisher that can polish a propeller of a moored ship to Ra2μm or less in water, or Ra0.5μm that is particularly difficult to attach marine deposits, and an underwater roughness meter that can measure roughness in Ra 0.01μm units By using, it became possible to grasp the state of the underwater propeller numerically, and it became possible to judge the performance and maintenance management of the underwater propeller without putting the ship in service into the dock.
岸壁に係留中の船舶のプロペラ表面を水中で研磨し、研磨が終了したあとプロペラを回転させて水面に出し、研磨面の粗度を測定した。その結果水中で研磨したプロペラの表面粗度は、平均値でRa0.5μm以下であった。又場所によってはRa0.1μmの粗度にプロペラ表面がなっていることが確認された。水槽実験での水中研磨では検体の表面粗度がRa0.2μmになっていることが確認された。 The surface of the propeller of the ship moored on the quay was polished in water, and after polishing was completed, the propeller was rotated to the surface and the roughness of the polished surface was measured. As a result, the surface roughness of the propeller polished in water was Ra 0.5 μm or less on average. Moreover, it was confirmed that the surface of the propeller had a roughness of Ra 0.1 μm depending on the location. In water polishing in a water tank experiment, it was confirmed that the surface roughness of the specimen was Ra 0.2 μm.
実験として、定期航路を運航しているフェリー船で、定期的に水中でプロペラ表面をRa2μm~Ra0.5μm以下の粗度になるように研磨を行う保守管理を行なった。結果、保守を行わなかった以前と保守管理を行なった後を比較してみると、3%~6%程度の燃料が削減されていると推測される結果が出た。 As an experiment, on a ferry ship operating on a regular route, maintenance management was performed in which the surface of the propeller was periodically polished in water to have a roughness of Ra 2 μm to Ra 0.5 μm or less. As a result, when comparing before maintenance and after maintenance, it was estimated that about 3% to 6% of fuel was reduced.
水中でプロペラ研磨を行い70日経過後ドックでプロペラの研磨部の粗度測定を行った。Ra0.3μm程度に研磨した部分の粗度はRa0.6μm平均だった、又Ra1μm程度に研磨した部分の粗度はRa7μm平均であった。このことにより研磨粗度の仕上がり状況によりその後の海洋性付着物の着床に差が出ることが分かった。 Propeller polishing was performed in water, and the roughness of the polished part of the propeller was measured at the dock after 70 days. The roughness of the portion polished to about Ra 0.3 μm was an average of 0.6 μm Ra, and the roughness of the portion polished to about Ra 1 μm was an average of 7 μm Ra. As a result, it was found that there was a difference in the subsequent landing of marine deposits depending on the finish of the polishing roughness.
これにより、プロペラの表面を2μm~0.5μm以下、特に1μm以下に研磨すると、プロペラの性能が回復するだけでなく、海洋性付着物が着床しにくくなり、プロペラ表面が汚れてくるのに時間がかかりプロペラ表面の良い状態が長く続き、燃料消費量が少なくなる。 As a result, when the surface of the propeller is polished to 2 μm to 0.5 μm or less, particularly 1 μm or less, not only the propeller performance is restored, but also marine deposits are difficult to land and the propeller surface becomes dirty. It takes time and the propeller surface is in good condition for a long time, reducing fuel consumption.
実験で定期的にプロペラの表面を2μm~0.5μm以下に研磨した船舶では3%~6%の燃料消費量の削減と思われる結果が出たが、水中研磨による保守整備がどれだけ燃料削減に寄与したかは正確に把握できていない。 Ships whose propeller surfaces were periodically ground to 2 μm to 0.5 μm or less in experiments showed results that seemed to reduce fuel consumption by 3% to 6%, but how much maintenance maintenance by underwater polishing reduced fuel consumption It is not possible to accurately grasp whether it contributed to
プロペラ表面の粗度をRa0μmに近づければ近づけるほど性能が良くなることはわかっている。進水時のプロペラの表面粗度は通常Ra3μm~Ra6μmである。どの精度まで粗度を上げるとより効率のよいプロペラになるのか、又海洋性付着物に対して付着をどれだけ遅らせる効果があるのか、検証は難しいとされている。 It has been found that the closer the roughness of the propeller surface is to Ra0 μm, the better the performance. The surface roughness of the propeller at the time of launch is usually Ra3 μm to Ra6 μm. It is considered difficult to verify to what accuracy the roughness increases to a more efficient propeller and the effect of delaying adhesion to marine deposits.
水中でプロペラ表面を研磨し、プロペラの性能を良い状態にさせて運航し、プロペラ表面に汚れが付くのを遅らせ、プロペラが汚れる前に、定期的に水中プロペラ研磨を行う保守管理を行う場合と、ドック出渠後プロペラの保守管理を行なわない状態で運航した場合とを比較すれば、燃料消費量に大きな差が出る。 Polishing the propeller surface in water, operating with the propeller performance in good condition, delaying the contamination of the propeller surface, and performing maintenance management to periodically underwater propeller polishing before the propeller becomes dirty Compared with the case where the propeller is operated without maintenance management after docking, there is a big difference in fuel consumption.
プロペラ表面の粗度を良い状態で維持する保守管理を行った場合と、プロペラ表面の粗度を保守管理しない場合の燃料消費量を比較すれば、水中で保守管理を行った場合は燃料消費量が少なくなる。この燃料消費量の差を検証できれば省エネルギー対策の燃料削減の検証が可能となる。又保守管理を行うことで減少した未使用分燃料を燃料削減数量に置き換えることにより、二酸化炭素排出量削減数量として検証することも可能となる。 Comparing the fuel consumption when maintaining the propeller surface with good roughness and when not maintaining the roughness of the propeller surface, the fuel consumption when maintaining underwater Less. If this difference in fuel consumption can be verified, it will be possible to verify fuel saving as an energy saving measure. In addition, it is possible to verify the amount of carbon dioxide emission reduction by substituting the unused fuel that has been reduced by maintenance management with the amount of fuel reduction.
燃料削減確認方法として、検証前のプロペラの粗度を計測してプロペラの性能を把握し、就航時の船舶の運航に関する各種データーとプロペラの汚れによる性能劣化の影響分の海象及び気象分のデーターをリアルタイムで収集し解析することにより、就航中の船舶の、汚れ状態が把握できるので、就航時のプロペラの性能が把握できる。燃料削減量検証時にプロペラの粗度を計測して現在のプロペラの性能を確定し、汚れによる性能悪化予測分と比較することにより、燃料削減量の確認ができ、燃料削減分に当たる二酸化炭素排出量削減の証明もできるようになる。 As a fuel reduction confirmation method, the roughness of the propeller before the verification is measured to understand the propeller performance, various data on ship operations at the time of operation, and the data on the sea condition and weather for the effects of performance deterioration due to the contamination of the propeller By collecting and analyzing in real time, it is possible to grasp the dirt state of the ship in service, so the performance of the propeller at the time of service can be grasped. By measuring the roughness of the propeller when verifying the fuel reduction amount, the current propeller performance is determined, and compared with the predicted performance deterioration due to dirt, the fuel reduction amount can be confirmed, and the carbon dioxide emissions corresponding to the fuel reduction amount It will be possible to prove the reduction.
特許文献1は、船舶推進システムであって、船舶推進装置での省エネルギー対策として、船体内部の機器類を最適な機器構成で省エネルギー効率を高くするような省エネ対策が見受けられるが、水中で推進器を保守管理して行う燃費削減技術については記述が無い。 Patent document 1 is a ship propulsion system, and as an energy saving measure in a ship propulsion device, an energy saving measure that increases energy saving efficiency with an optimum equipment configuration of equipment inside the hull can be seen. There is no description about the fuel consumption reduction technology that is performed by maintaining and managing.
特許文献2は、船体構造をより効率のよい構造にすることにより燃料効率を上げる方法が見受けられるが、水中で推進器を保守管理して行う燃費削減技術については記述が無い。 In Patent Document 2, there is a method for increasing the fuel efficiency by making the hull structure more efficient, but there is no description of a fuel consumption reduction technique that is performed by maintaining and managing the propeller in water.
特許文献3は、船の省エネルギー装置に代表されるように、空気の泡などを使い船体の抵抗を少なくして船体を滑らせ、効率を上げる省エネルギー方法であるが、水中で推進器を保守管理して行う燃費削減技術については記述が無い。 Patent Document 3 is an energy-saving method that increases the efficiency by reducing the resistance of the hull by using air bubbles, etc., as represented by the energy-saving device of the ship. There is no description about the fuel consumption reduction technology to be performed.
特許文献4は、舶用推進プラントの経年変化モニタ装置であって、プロペラの回転速度及び船舶燃料の現状を把握する方法で、劣化による経年変化をとらえるプログラムである、水中で推進器を保守管理して行う燃費削減技術については記述が無い。 Patent Document 4 is a secular change monitoring device for a marine propulsion plant, which is a method of grasping the secular change due to deterioration by a method of grasping the rotational speed of a propeller and the current state of marine fuel, and maintaining and managing the propeller in water. There is no description of fuel efficiency reduction technology.
特許文献5は、環境負荷低減型航海計画提供システムであって、気象・海象による影響を考慮して運航を的確に行うシステムであるが、水中で推進器を保守管理して行う燃費削減技術については記述が無い。 Patent document 5 is a system for providing a voyage plan that reduces the environmental load, and is a system that accurately operates in consideration of the influence of weather and sea conditions. Is not described.
特許文献6は、船舶等の機関性能解析方法であって、操船性を良くする機関性能の解析方法である。水中で推進器を保守管理して行う燃費削減技術については記述が無い。 Patent Document 6 is an engine performance analysis method for ships and the like, and is an engine performance analysis method for improving ship maneuverability. There is no description about the fuel consumption reduction technology that maintains and manages the propeller underwater.
特許文献7は、船舶の操業記録装置であって、船舶運航記録に関する操業記録装置であるが、水中で推進器を保守管理して行う燃費削減技術については記述が無い。 Patent document 7 is a ship operation recording apparatus, which is an operation recording apparatus related to ship operation records. However, there is no description about a fuel consumption reduction technique performed by maintaining and managing a propulsion device in water.
特許文献8は、輸送用機器に於ける燃費率表示装置であって、リアルタイムで現在の消費量を伝達するものであり、燃料削減を目的とするものではない、水中で推進器を保守管理して行う燃費削減技術については記述が無い。 Patent Document 8 is a fuel consumption rate display device for transportation equipment, which transmits current consumption in real time and is not intended to reduce fuel. There is no description of fuel efficiency reduction technology.
特許文献9の水中研磨装置では、水中で人力ではなく遠隔操作で研磨する装置であり、揺れ動く船舶のプロペラの研磨を行うことができない研磨装置である。
当方は、揺れ動く船舶のプロペラをダイバーが研磨するだけでなく、研磨後の粗度測定を行いプロペラの性能を確定することができることによる燃料削減証明を行える点に大きな違いがある。
The underwater polishing apparatus of Patent Document 9 is an apparatus that polishes underwater by remote operation instead of human power, and is a polishing apparatus that cannot polish a propeller of a swaying ship.
There is a big difference in that we can not only polish the propeller of a swaying ship, but also prove the fuel reduction by measuring the roughness after polishing and determining the propeller performance.
非特許文献1の船舶性解析サービス開発では、プロペラの汚れによる性能劣化を把握して運行された資料に、気象・海象による解析データーを加味して規定航路を変更することにより行えるサービスが提供されており、プロペラの水中保守管理を除くデーターによる燃料削減の解析まで行える技術が確立されている一例で、運航に関する燃料使用量として一般的に知られており、これに準ずる技術及び資料が公表されている。 In the development of the ship property analysis service described in Non-Patent Document 1, a service that can be performed by changing the specified route by adding the analysis data based on weather and sea conditions to the data operated by grasping the performance deterioration due to the dirt of the propeller is provided. This is an example of a technology that can be used for analysis of fuel reduction using data excluding underwater maintenance management of propellers, and is generally known as fuel consumption related to operations. ing.
非特許文献2では、実海域に係る過去の実績データーなどによる、プロペラの経年変化による劣化と就航時に関する粗度の悪化の及び海象気象による計算式などが記載されており、停泊時間及び特殊な就航地域などのデーターを加味することでプロペラの粗度の悪化状況を容易に予測することができるようになる参考文献である。 Non-Patent Document 2 describes the deterioration of the propeller due to secular changes and the deterioration of the roughness at the time of service and the calculation formula based on marine weather, etc. This is a reference that makes it possible to easily predict the deterioration of the roughness of propellers by taking into account data such as the service area.
特開2007-326391公報JP 2007-326391 A 特開2007-238007公報JP 2007-238007 A 特開2004-284546公報JP 2004-284546 A 特開平8-297075  公報JP-A-8-297075 特開2007-45338 公報JP 2007-45338 Gazette 特開平7-246980  公報JP 7-246980 A 特開平1-292591  公報Japanese Patent Laid-Open No. 1-292591 特開昭59-26014  公報JP 59-26014 A 特開昭61-19387  公報Japanese Patent Laid-Open No. 61-19387
海洋を航海する船舶の燃料消費量は、海象や気象や季節変化や積み荷及び運航条件などの諸条件の違いにより毎回燃料消費量が変化する。このように船舶の燃料消費量は、増減に影響する要因が多岐にわたるため、燃料削減対策を行ってもその時実施した燃料削減対策による削減量としては確定されにくいものである。 The fuel consumption of a ship sailing in the ocean changes every time due to differences in various conditions such as sea conditions, weather, seasonal changes, loading and operating conditions. As described above, since the fuel consumption of the ship has various factors that affect the increase and decrease, even if the fuel reduction measures are taken, it is difficult to determine the reduction amount by the fuel reduction measures implemented at that time.
又、定期航路で似たような条件で就航している船舶であれば、事前の運航条件と照らし合わせて燃料削減対策を行った場合燃料削減効果を比較的確認しやすいが、燃料削減量として確定することは難しい。 In addition, if a vessel is operating under similar conditions on a regular route, it is relatively easy to confirm the fuel reduction effect when taking fuel reduction measures against the previous operating conditions. It is difficult to confirm.
プロペラ表面の粗度をRa0μmに近づければ近づけるだけ性能が良くなることはわかっている。進水時のプロペラの表面粗度は通常Ra3μm~Ra6μmと言われている。どの精度まで粗度を上げるとより効率のよいプロペラになるのか、又海洋性付着物に対して付着をどれだけ遅らせる効果があるのか、検証は難しいとされているがプロペラ表面粗度による燃料損失効率は周知されている。 It has been found that the closer the roughness of the propeller surface is to Ra0 μm, the better the performance. The surface roughness of the propeller at the time of launch is usually said to be Ra 3 μm to Ra 6 μm. It is considered difficult to verify the accuracy to which the roughness of the propeller becomes more efficient and the effect of delaying the adhesion to marine deposits, but fuel loss due to the surface roughness of the propeller Efficiency is well known.
燃料削減確認方法として、船舶の就航中に、水中でプロペラの性能を良くする研磨と性能を確認する粗度測定を行う保守管理手段を行い、保守管理しなかった場合のプロペラの汚れによる燃料消費量を予測するため、船舶の運航に関する各種データーとプロペラの汚れによる性能劣化の影響分のデーターをリアルタイムで収集・解析することにより、就航中の船舶の燃料削減の確認と、二酸化炭素排出量削減の確認ができるようになる。 As a method of confirming fuel reduction, maintenance is performed to improve the propeller performance underwater while the ship is in service and to measure the roughness to check the performance. Fuel consumption due to contamination of the propeller when maintenance is not performed. In order to predict the amount, various data related to ship operations and the impact of performance deterioration due to dirt on the propellers are collected and analyzed in real time, confirming the fuel reduction of the ship in service and reducing carbon dioxide emissions. Can be confirmed.
船舶の就航中に、水中でプロペラの保守管理手段を行い、船舶の各種データーとプロペラの汚れによる性能劣化の影響分の各種データーを、コンピューターを使い収集・解析することにより、就航中の船舶の燃料削減の確認と二酸化炭素排出量削減の確認ができるので、二酸化炭素排出量削減分をクレジット化して運用ができるようになる。 While the ship is in service, the propeller maintenance and management measures are performed underwater, and various data on the ship and the effects of performance deterioration due to the contamination of the propeller are collected and analyzed using a computer. Since it is possible to confirm fuel reduction and carbon dioxide emission reduction, the carbon dioxide emission reduction can be credited and operated.
当該船舶が就航中にプロペラの水中研磨と水中粗度測定による保守管理を行うことにより、燃料と二酸化炭素排出量の削減が実現し、それを証明できるようになる。プロペラの水中保守管理による二酸化炭素排出量削減認証プロジェクトを作成し申請して認可を受けることができるようになる。 While the ship is in service, maintenance of the propeller underwater and underwater roughness measurement will reduce and reduce fuel and carbon dioxide emissions. It will be possible to create and apply for a carbon dioxide emission reduction certification project by underwater maintenance management of propellers and get approval.
就航中の船舶のプロペラの水中研磨と水中粗度測定による水中での保守管理手段を行うことにより、船舶プロペラの水中保守管理による燃料削減が確認できなかった従来と比較し、燃料消費量が削減されたことが確認され証明することができるようになる。 Reduces fuel consumption by underwater maintenance by means of underwater polishing and underwater roughness measurement of the ship's propellers in service, compared to the previous case where fuel reduction due to underwater maintenance management of ship propellers could not be confirmed. It will be confirmed and proved that this has been done.
 本発明は、以上の点に鑑みて創案されたものであり、船舶をドックに入れることなく水面に浮いている状態で、水中にあるプロペラの保守整備を行なうことができる燃料削減量を確認できる方法を提供することを課題としている。 The present invention was devised in view of the above points, and it is possible to confirm the amount of fuel reduction that can perform maintenance of a propeller underwater while the ship is floating on the surface of the water without being docked. The challenge is to provide a method.
燃料削減を確認する期間の開始時と点検時と終了時に水中でプロペラ表面の粗度測定を行い粗度が悪い時は水中で研磨をおこない研磨後その粗度を測定しプロペラを良い状態にして運航して燃料を削減する保守管理手段と、燃料削減分を算出する燃料消費量管理手段とを設けることを特徴とする燃料削減量確認方法。 Measure the roughness of the propeller surface in water at the start, inspection and end of the period to confirm fuel reduction, and if the roughness is poor, polish in water and measure the roughness after polishing to make the propeller in good condition A fuel reduction amount confirmation method comprising: maintenance management means for operating and reducing fuel; and fuel consumption management means for calculating fuel consumption.
燃料消費量管理手段は、検証前のプロペラの粗度を計測してプロペラの性能を把握し、水中でプロペラを良い状態に保った保守管理の結果と、保守管理を行わなかった場合に、就航中のプロペラに付く付着物による影響を及ぼす各種データーを収集して解析し、付着物及び付着生物の成長度合いによる就航中のプロペラの汚れを予測し、汚れにより発生するプロペラの効率悪化分による燃料増加分を予測し比較できることを特徴とする燃料削減量確認方法。 The fuel consumption management means measures the roughness of the propeller before verification, grasps the propeller performance, and results in maintenance management in which the propeller is kept in good condition underwater, and when maintenance management is not performed Collect and analyze various data affected by the deposits attached to the propellers inside, predict the contamination of the propeller in service due to the growth of deposits and attached organisms, and fuel due to the deterioration of the propeller efficiency caused by the contamination A method for confirming the amount of fuel reduction, characterized in that the increase can be predicted and compared.
燃料消費量管理手段は、水中でプロペラ表面の粗度測定と研磨による保守管理手段による燃料削減量確認方法を受ける船舶の就航中の船舶のプロペラの粗度の燃料消費量をRa1μm~Ra30μmの間で、Ra1μm毎に予測できることを特徴とする燃料削減量確認方法。 The fuel consumption management means measures the roughness of the propeller surface in water and the fuel consumption of the roughness of the propeller roughness of the ship in service, which is subject to the fuel reduction confirmation method by the maintenance management means by polishing between Ra1μm and Ra30μm Thus, the fuel reduction amount confirmation method characterized by being able to predict every Ra 1 μm.
燃料消費量管理手段は、水中でプロペラ表面の粗度測定と研磨による保守管理手段による燃料削減量確認方法を検証する期間中の粗度測定結果と燃料消費量と、プロペラの粗度に影響する各種データーを常に収集し分析することにより就航中の船舶プロペラの粗度予測を常に算出し、就航中にリアルタイムで燃料削減量および二酸化炭素排出量削減分を算出することができることを特徴とする燃料削減量確認方法。 The fuel consumption management means influences the roughness measurement results, fuel consumption, and propeller roughness during the period to verify the fuel reduction amount confirmation method by the maintenance management means by measuring the roughness of the propeller surface in water A fuel characterized by being able to constantly calculate the roughness prediction of the ship propeller in service by constantly collecting and analyzing various data, and to calculate the fuel reduction and carbon dioxide emission reduction in real time during service. Reduction amount confirmation method.
燃料消費量管理手段で算出され、確定した未使用の燃料分を、二酸化炭素排出量に換算して、二酸化炭素排出量削減証明書として受領でき、又クレジット化して運用することができることを特徴とする燃料削減量確認方法。 The amount of unused fuel calculated and confirmed by the fuel consumption management means can be converted into carbon dioxide emissions, received as a carbon dioxide emission reduction certificate, and operated as a credit. To check the amount of fuel reduction.
燃料削減量確認方法は、コンピューターを使い燃料削減量が数値化出来るので、二酸化炭素排出量削減分に換算でき、これを二酸化炭素排出量削減の根拠として二酸化炭素排出量削減証明書の発行をうけクレジット化して運用することができる。又就航中の船舶の燃料削減量及び二酸化炭素排出量削減分もデーター通信によるコンピューターを使う管理によりリアルタイムで燃料削減の確認ができるので、運航管理がより詳しくできるようになると共に、二酸化炭素排出量削減証明書をいろいろな取引形態で利用することが出来るようになる。 The fuel reduction amount confirmation method can convert the amount of fuel reduction using a computer, so it can be converted into the amount of CO2 emission reduction, and the CO2 emission reduction certificate can be issued as the basis for CO2 emission reduction. Can be operated with credit. In addition, the amount of fuel reduction and CO2 emission reductions of ships in service can be confirmed in real time by management using a computer by data communication, so that operation management can be made more detailed and carbon dioxide emissions can be reduced. Reduction certificates can be used in various transaction formats.
燃料削減量確認方法の構成図。The block diagram of the fuel reduction amount confirmation method. 燃料削減量確認方法の保守管理手段の拡大図。The enlarged view of the maintenance management means of the fuel reduction amount confirmation method. プロペラの水中保守管理時と通常運航時の消費燃料の比較図。Comparison chart of fuel consumption during underwater maintenance management of propeller and normal operation. プロペラ表面粗度による燃料効率図(a)プロペラ効率推定曲線 (b)プロペラ表面粗度と燃料効率。Fuel efficiency chart by propeller surface roughness (a) Propeller efficiency estimation curve (b) Propeller surface roughness and fuel efficiency. 燃料消費量管理手段のプログラムの動作フロー図。The operation | movement flowchart of the program of a fuel consumption management means. プロペラの水中保守管理による二酸化炭素排出量削減証明書の発行の作業フロー図。The work flow chart of the issuance of the carbon dioxide emission reduction certificate by the underwater maintenance management of the propeller. 船体抵抗と燃料消費の関係。Relationship between hull resistance and fuel consumption.
 本発明の船舶プロペラの水中保守管理による燃料削減量確認方法は、図1に示すように、水中でプロペラ表面の粗度測定と研磨をおこなう保守管理手段12と、燃料削減を確認して燃料削減量を算出する燃料消費量管理手段13と、削減された燃料が出す予定の二酸化炭素排出量を二酸化炭素排出量削減証明書16として受け取ることができる二酸化炭素排出量削減証明書発行手段14とを設けることにより、燃料削減と二酸化炭素排出量削減分の検証と認証により二酸化炭素排出量削減証明書16の発行が受けられる燃料削減量確認方法である。 As shown in FIG. 1, the method for confirming the amount of fuel reduction by underwater maintenance management of a ship propeller according to the present invention includes maintenance management means 12 that measures and polishes the roughness of the propeller surface underwater, and fuel reduction by confirming fuel reduction. A fuel consumption management means 13 for calculating the amount, and a carbon dioxide emission reduction certificate issuing means 14 capable of receiving as a carbon dioxide emission reduction certificate 16 the carbon dioxide emission scheduled to be produced by the reduced fuel. This is a fuel reduction amount confirmation method that allows the issuance of a carbon dioxide emission reduction certificate 16 by verification and authentication of fuel reduction and carbon dioxide emission reduction.
水中でプロペラ表面の粗度測定と研磨をおこなう保守管理手段12は、就航中の船舶のプロペラの粗度を水中で管理することによりプロペラの性能を判断する手段で、水中でダイバーが水中粗度計を使いプロペラ表面の粗度を測定し、粗度が悪い場合は水中でプロペラ表面を研磨し、プロペラを良い状態で維持させる保守管理手段である。 The maintenance management means 12 for measuring and polishing the roughness of the propeller surface in water is a means for judging the performance of the propeller by managing the roughness of the propeller of the ship in service underwater. This is a maintenance management means that measures the roughness of the propeller surface using a meter, and if the roughness is poor, polishes the propeller surface in water to maintain the propeller in good condition.
水中でプロペラ表面の粗度測定が行える水中粗度計と水中でプロペラの表面をRa1μm以下に研磨できる水中研磨器を使い研磨をおこなう保守管理手段の検証数値の最小の数値をRa1μmとする。この数値は現在の研磨技術を考慮した数値で、研磨の技術が良くなればその数値を採用することもできる。又最大値の粗度検証数値はRa30μmとする。この数値は基準粗度見本板として使用されているルバートゲージの一番荒い粗度であるグレードFに近いRa30μmを採用している。又保守管理するプロペラの粗度の範囲はRa0μm~Ra30μmの間とする。 Ra1 μm is the minimum value for verification of maintenance management means for polishing using an underwater roughness meter that can measure the roughness of the propeller surface in water and an underwater polisher that can polish the surface of the propeller to Ra1 μm or less in water. This value is a value that takes into account the current polishing technology. If the polishing technology improves, that value can also be adopted. The maximum roughness verification value is Ra 30 μm. This numerical value employs Ra 30 μm, which is close to grade F, which is the roughest roughness of the Lubert gauge used as the reference roughness sample plate. The range of roughness of the propeller to be maintained is between Ra 0 μm and Ra 30 μm.
更に、当該船舶の運航予定資料などで次回メンテナンスまでのプロペラの粗度を予測し、粗度の予測数値が次回のメンテナンスまでに管理値以上になると予測される場合、事前に水中研磨などを指示できる保守管理手段である。 Furthermore, predict the roughness of the propeller until the next maintenance with the ship's operation schedule data, etc., and if it is predicted that the predicted roughness will exceed the control value by the next maintenance, instruct underwater polishing etc. in advance It can be a maintenance management means.
燃料削減量を検証して二酸化炭素排出量削減分を算出する燃料消費量管理手段とは、水中でプロペラ表面の粗度測定と研磨をおこなう保守管理手段による燃料使用量と、プロペラの汚れによる燃料増加に影響を及ぼす各種データーと、運航に関する積荷情報及びその船が独自に持っている船体に関する情報である船齢及び船舶固有のプロペラ性能とに関する各種データーとを収集し解析して、水中でプロペラ表面の粗度測定と研磨を行う保守管理手段を行わなかった場合の燃料を、予測して算出し、水中でプロペラ表面の粗度測定と研磨をおこなった保守管理手段の燃料消費量と比べて燃料が削減されたことが確認出来る燃料消費量管理手段である。 The fuel consumption management means that verifies the fuel reduction amount and calculates the carbon dioxide emission reduction amount is the fuel usage by the maintenance management means that measures and polishes the surface of the propeller in water, and the fuel due to the contamination of the propeller Propeller surface underwater by collecting and analyzing various data that affect the increase, cargo information related to operations, and various data related to ship age and ship-specific propeller performance that is unique to the ship. The fuel when the maintenance management means that performs roughness measurement and polishing is not performed is predicted and calculated, and the fuel consumption is compared with the fuel consumption of the maintenance management means that measured and polished the surface of the propeller in water. It is a fuel consumption management means that can be confirmed to have been reduced.
削減された燃料が出す予定の二酸化炭素排出量を二酸化炭素排出量削減証明書として受け取ることができる、二酸化炭素排出量削減証明書発行手段とは、水中でプロペラ表面の粗度測定と研磨をおこなう保守管理手段と、燃料消費量管理費手段により、削減が確認された燃料が出す予定の二酸化炭素排出量の認証を受けるため、二酸化炭素排出量削減認証プロジェクトを作り二酸化炭素排出量削減認証機関に申請し認可され、水中でプロペラ表面の粗度測定と研磨をおこなう保守管理手段と燃料消費量管理費手段により二酸化炭素排出量削減認証プロジェクトが認可された通りに実施されていることを二酸化炭素排出量削減認証機関が検証を行い二酸化炭素排出量削減証明書が発行される二酸化炭素排出量削減証明書の発行手段である。 The CO2 emission reduction certificate issuance means that can receive the carbon dioxide emission that the reduced fuel is expected to emit as a carbon dioxide emission reduction certificate, and measures the roughness and polishing of the surface of the propeller in water Create a carbon dioxide emission reduction certification project and become a carbon dioxide emission reduction certification body in order to receive certification of carbon dioxide emission scheduled to be released by fuel that has been confirmed to be reduced by maintenance management means and fuel consumption management cost means Carbon dioxide emission that the CO2 emission reduction certification project has been implemented as approved by the maintenance management means that measures and polishes the surface of the propeller in water and the fuel consumption management cost means. This is a means for issuing a carbon dioxide emission reduction certificate, which is verified by a volume reduction certification authority and issued with a carbon dioxide emission reduction certificate.
燃料削減量確認方法は、燃料削減量確認実施期間中若しくは実施終了後、検証対象のプロペラの粗度を計測又は予測してプロペラの性能を把握し、就航時の船舶の運航に関する各種データーとプロペラの汚れによる性能劣化の影響分のデーターをリアルタイムで収集し解析することにより、就航中の船舶のプロペラの汚れの状態を把握することによりプロペラの性能を予測する。又、燃料削減量検証時に適宜プロペラの粗度を計測して現在のプロペラ性能を確定し、汚れによる性能悪化予測分と比較することにより、燃料削減量の確認ができ、燃料削減分に当たる二酸化炭素排出量削減の証明もできるようになる燃料削減量確認方法である。
又、燃料削減量確認方法は、燃料削減を確認する期間の開始時と点検時と終了時に水中でプロペラ表面の粗度測定を行い粗度が悪い時は水中で研磨をおこなう保守管理手段と研磨前後その粗度を測定しプロペラを良い状態にして運航して燃料を削減する保守管理手段と、プロペラの保守管理及び運航にかかわる各種データーを収集し、燃料消費量管理手段のコンピューター管理されているプログラムに、必要に応じて各種データーを収集し入力して解析することにより、プロペラの汚れによる抵抗損失を即時に計算し、水中でプロペラの保守管理手段を行った場合と水中保守管理を行わなかった場合とを即時に比較した燃料消費量の差を現し、未使用分の燃料を削減された燃料として確定できる燃料消費量管理手段と、検証期間中でも確定分の燃料に該当する二酸化炭素排出量を削減数量として二酸化炭素排出量削減証明書を受け取ることができる、二酸化炭素排出量削減証明書発行手段を持つことを特徴とする燃料削減量確認方法。
The fuel reduction amount confirmation method consists of measuring or predicting the roughness of the propeller to be verified during the fuel reduction amount check period or after the completion of the check, to grasp the propeller performance, and various data and propellers related to ship operation at the time of service. By collecting and analyzing data on the effects of performance degradation due to dirt on the ship in real time, the propeller performance is predicted by grasping the state of dirt on the propeller of the ship in service. In addition, by measuring the roughness of the propeller as appropriate at the time of fuel reduction verification, the current propeller performance is determined, and compared with the predicted performance deterioration due to dirt, the fuel reduction can be confirmed, and carbon dioxide equivalent to the fuel reduction This is a method for confirming the amount of fuel reduction that will be able to prove emission reduction.
Also, the fuel reduction amount check method is a maintenance management means that measures the roughness of the propeller surface in water at the start of the period for checking fuel reduction, at the time of inspection and at the end, and polishes in water when the roughness is poor. The maintenance management means that measures the roughness before and after and operates the propeller in good condition to reduce fuel and collects various data related to the maintenance management and operation of the propeller, and is managed by the computer of the fuel consumption management means By collecting, inputting, and analyzing various data as necessary in the program, the resistance loss due to propeller contamination is immediately calculated, and when propeller maintenance management is performed underwater and underwater maintenance management is not performed The fuel consumption management means that can show the difference in the fuel consumption that is immediately compared to You can receive carbon dioxide emissions reduction certificates carbon dioxide emissions corresponding to the fuel as a reducing quantity, fuel reduction confirmation method characterized by having a reduced certificate issuing means carbon dioxide emissions.
各種データーとは、プロペラの汚れの要因若しくはプロペラの効率に影響を及ぼすことが予測される事象のデーター類で、停泊期間、荷役期間、淡水域航行期間、プロペラの回転数、天候、水温、気温、透明度、海域、喫水などのプロペラの汚れに影響を与える海洋性付着物着床に関するデーター及び、船体外板部塗料の抵抗損失係数、船舶固有の設備に関する劣化度係数及び当該船舶固有のプロペラ効率係数、船舶運航データー、燃料消費量、プロペラ各部の粗度計測データーなど、対象船舶が固有に持っているプロペラの効率などに影響を与えるものである(前記及び以後も各種データーと記載している)。又各種データーで解析されたプロペラの予測粗度データー類なども含む。 Various types of data are data on events that are expected to affect the factors of propeller contamination or propeller efficiency, such as berthing period, cargo handling period, freshwater navigation period, propeller speed, weather, water temperature, and temperature. Data on marine deposits that affect propeller soiling, transparency, sea area, draft, etc., resistance loss coefficient of hull skin coating, deterioration factor coefficient for ship-specific equipment and ship-specific propeller efficiency It affects the propeller efficiency inherent to the target vessel, such as coefficient, vessel operation data, fuel consumption, and roughness measurement data of each part of the propeller (the above and the following are also described as various data) ). It also includes propeller predicted roughness data analyzed with various data.
保守整備を行わなかった場合の燃料消費量を予測するため、事前に実証調査及び文献などに基づいて、船舶運航及び船舶運航域の各種データーを収集し解析して、各種データーの入力項目に応じ、有効となる基礎係数を作成し、有効となる燃料削減予測を検証できるプログラムを作成する。この基礎係数は学識経験者(気象学者、海象学者、生物学者、及び船舶設計運航に関する学者などを含む)を含む塗料メーカー及び造船と船舶関連業界全体の協力のもとプロジェクトを組むことにより、有効となる係数及び燃料削減予測を検証できるプログラムを作成することができる。基礎係数の例として、水温が25度で1時間プロペラが水中にあった場合海洋性付着物が成長してプロペラの抵抗増加に影響を及ぼす係数は、水温(仮の数値0度)を基準として、温度が1度上がるごとにプロペラの効率を落とす基礎係数は(仮の数値0.0001)となる、このような基礎係数をプロジェクトで検証し作成する。基礎係数があまりに小さい場合はプロペラの粗度の影響が少ないと判断して基礎係数が0となることもある。他の例としてプロペラの粗度がRa1μm~Ra30μmの間で、1μm毎に性能が解析できる基礎係数を作成する。又例に上がっていないプロペラの粗度及び効率に影響を与える基礎係数が加算されることもある。 In order to predict the fuel consumption when maintenance is not carried out, various data on ship operations and ship operation areas are collected and analyzed based on empirical surveys and literature in advance, and according to various data input items Create a program that can create effective base coefficients and validate effective fuel reduction predictions. This basic coefficient is effective by organizing projects with the cooperation of paint manufacturers and shipbuilding including the academics (including meteorologists, marine scientists, biologists, and scholars related to ship design and operation) and the ship-related industry as a whole. It is possible to create a program that can verify the coefficient and the fuel reduction prediction. As an example of the basic coefficient, when the water temperature is 25 degrees and the propeller is in the water for 1 hour, the coefficient that affects the increase in resistance of the propeller when the marine deposit grows is based on the water temperature (temporary value 0 degree) Each time the temperature rises, the basic coefficient for reducing the efficiency of the propeller is (temporary numerical value 0.0001). Such a basic coefficient is verified and created in the project. If the basic coefficient is too small, it may be determined that the influence of the roughness of the propeller is small, and the basic coefficient may be zero. As another example, a basic coefficient whose performance can be analyzed every 1 μm when the roughness of the propeller is between Ra 1 μm and Ra 30 μm is created. In addition, basic factors that affect the roughness and efficiency of propellers not mentioned in the examples may be added.
燃料削減量確認方法の燃料消費量管理手段のコンピューターには、当該船舶の各種データーを入力することによりプロペラの粗度Ra1μm~Ra30μmの間で、Ra1μmごとに燃料消費量が予測計算できるプログラムが入力されており、又、プロペラ粗度がRa30μm以上にならないように事前に運航予定の計画航路の各種データーの前項の基礎係数を入力することによりプロペラの粗度を予測できるプログラムも備えられており、各種データーを入力することにより、当該船舶の粗度を予測し水中プロペラ研磨の保守整備の指示ができるようになる。 The computer of the fuel consumption management means of the fuel reduction amount confirmation method inputs a program that can predict and calculate the fuel consumption for each Ra 1 μm between the roughness of Ra 1 μm and Ra 30 μm of the propeller by inputting various data of the ship concerned In addition, there is also a program that can predict the roughness of the propeller by inputting the basic coefficient of the previous item of the various data of the planned route planned to be operated in advance so that the propeller roughness does not exceed Ra 30 μm, By inputting various data, it is possible to predict the roughness of the ship and instruct maintenance of underwater propeller polishing.
燃料削減量確認方法の燃料消費量管理手段のホストコンピューターを当該船舶若しくは陸上部の管理部門に設置し、データー通信を利用することにより、プロペラの粗度測定及び整備など燃料削減に関するデーターがいつでも確認できるので船舶運営の保守管理がこれまで以上に容易に行える。 By installing the host computer of the fuel consumption management means of the fuel reduction amount confirmation method in the management department of the ship or the onshore part, data on fuel reduction such as measuring and maintaining the roughness of the propeller can be confirmed at any time by using data communication This makes it easier than ever to maintain and manage ship operations.
図1は燃料削減量確認方法の構成図である。船舶プロペラの水中保守管理手段と燃料消費量管理手段と二酸化炭素排出量削減証明証発行手段とにより、二酸化炭素排出量削減証明書の発行を受けている例の概念図でもある。 FIG. 1 is a configuration diagram of a fuel reduction amount confirmation method. It is also a conceptual diagram of an example in which the carbon dioxide emission reduction certificate is issued by the underwater maintenance management means, the fuel consumption management means, and the carbon dioxide emission reduction certificate issuing means of the ship propeller.
図2は、図1の燃料削減量確認方法の構成図の保守管理手段の拡大図である。検査ダイバーが検査官から指示を受けプロペラの表面粗度の計測を行い、検査補助ダイバーが水中カメラでその状況を撮影し検査官に映像を送っている拡大図である。検査官はダイバーに検査と粗度測定を行わせるだけでなく水中研磨機を使い、プロペラ1の表面を研磨する保守整備を行わせることもできる。
粗度測定補助箱3を使って粗度測定をしている場合を例として示している。水中で粗度測定箱の気中部で使用できる粗度計を使い、検査ダイバー6が水中粗度計2でプロペラの粗度測定を行っている。プロペラ表面1に取り付けられた粗度測定補助箱3はプロペラ計測面と下部が開放されている構造で、外部との圧力差及び浮力に耐えられる強度を持ち、内部は気体が溜る構造となっている。又粗度測定補助箱3は、外部より中を確認できる材質で作られているので検査ダイバー6が水中で粗度測定状況を確認しながら粗度測定が行える。
FIG. 2 is an enlarged view of the maintenance management means of the configuration diagram of the fuel reduction amount confirmation method of FIG. It is an enlarged view in which an inspection diver receives an instruction from an inspector and measures the surface roughness of the propeller, and an inspection auxiliary diver photographs the situation with an underwater camera and sends an image to the inspector. The inspector can not only cause the diver to inspect and measure the roughness, but also use an underwater polishing machine to perform maintenance for polishing the surface of the propeller 1.
A case where roughness measurement is performed using the roughness measurement auxiliary box 3 is shown as an example. The inspection diver 6 measures the roughness of the propeller with the underwater roughness meter 2 using a roughness meter that can be used in the aerial part of the roughness measurement box in water. The roughness measurement auxiliary box 3 attached to the propeller surface 1 has a structure in which a propeller measurement surface and a lower part are open, has a strength capable of withstanding pressure difference and buoyancy with the outside, and has a structure in which gas is accumulated inside. Yes. The roughness measuring auxiliary box 3 is made of a material that can be checked from the outside, so that the inspection diver 6 can measure the roughness while checking the roughness measuring condition in water.
粗度測定補助箱3には水中に持ち込んだ水中粗度計が正常に作動しているか、水中で水中粗度計の動作を確認できるように基準粗度板4が設置されている。 The roughness measuring auxiliary box 3 is provided with a reference roughness plate 4 so that the underwater roughness meter brought into the water is operating normally or the operation of the underwater roughness meter can be confirmed in the water.
水中ビデオカメラ及び通信装置5は、検査官9が映像及び通信装置で水中の状況を確認するのに使用する。 The underwater video camera and the communication device 5 are used by the inspector 9 to check the underwater situation with the video and communication device.
検査ダイバー6は、水中粗度計2と粗度測定補助箱9を使いプロペラ表面1の粗度を測定する The inspection diver 6 measures the roughness of the propeller surface 1 using the underwater roughness meter 2 and the roughness measuring auxiliary box 9.
検査補助ダイバー7は、検査ダイバー6を補助し、プロペラ表面の粗度測定の補助及び検査状況を撮影する。 The inspection auxiliary diver 7 assists the inspection diver 6, and assists the roughness measurement of the propeller surface and photographs the inspection situation.
作業船10では、モニターテレビ8で、水中ビデオカメラ5から送られてきた映像で、水中で行われている粗度測定状況が確認できる。 In the work ship 10, the monitor TV 8 can confirm the roughness measurement status being performed underwater from the video sent from the underwater video camera 5.
作業船10上で検査官9は、プロペラ表面1の粗度測定時の測定位置を検査ダイバー6に水中通話装置で指示し粗度を測定させ、検査補助ダイバー7には、水中ビデオカメラ3を使い粗度測定位置及び粗度測定状況と、水中粗度計2表示の粗度の数値及び状況を撮影させる。その映像を船上のモニターテレビ8で検査官9が確認している。 On the work boat 10, the inspector 9 instructs the inspection diver 6 to measure the roughness when measuring the roughness of the propeller surface 1 by using the underwater communication device, and measures the roughness. The usage roughness measurement position and roughness measurement status and the numerical value and status of the roughness displayed on the underwater roughness meter 2 are photographed. The inspector 9 confirms the image on the monitor TV 8 on the ship.
作業船10は、例えば、水中のプロペラの検査装置と保守整備の研磨装置を積み込むことができると同時にダイバー作業にも使える小型船である。 The work boat 10 is, for example, a small boat that can load an underwater propeller inspection device and a maintenance polishing device and can also be used for diver work.
二酸化炭素排出量削減認証機関11は、水中でプロペラ表面の粗度測定と研磨をおこなう保守管理手段と燃料消費量管理費手段による二酸化炭素排出量削減認証プロジェクトの申請を受け審査及び実施を確認し二酸化炭素排出量削減量の証明書を発行できる機関である。 The carbon dioxide emission reduction certification body 11 confirms the examination and implementation upon receiving the application for the carbon dioxide emission reduction certification project by the maintenance management means that measures and polishes the surface of the propeller in water and the fuel consumption management cost means. It is an organization that can issue a certificate of carbon dioxide emission reduction.
粗度計測と研磨を行う保守管理手段12は、係留している船舶のプロペラの粗度を、ダイバーが水中粗度計2で測定し、作業船10で検査を行っている検査官9に水中ビデオカメラ及び通信装置を使い検査補助ダイバー7がプロペラの状況を映像で検査官9に伝えている。 The maintenance management means 12 for measuring and polishing the roughness measures the roughness of the propellers of the moored ship with the underwater roughness meter 2 by the diver and gives the inspector 9 who is inspecting the work ship 10 underwater. Using the video camera and communication device, the inspection assistant diver 7 informs the inspector 9 of the state of the propeller by video.
燃料消費量管理手段13は、燃料削減量確認を受ける船舶に検査官9が赴き、検査官9は水中でプロペラ表面の粗度測定と研磨をおこなう保守管理手段12の検査ダイバー6を使い、プロペラの粗度と測定場所を確認し、粗度の状況により水中研磨が必要な場合、水中研磨を行わせ、水中研磨終了後再び粗度測定を行わせている。検査官9はその測定データー及び燃料削減量確認を受ける船舶が所有している各種データーを収集し、解析して燃料削減量を確定する。又、検査官9は二酸化炭素排出量削減認証機関11に各種データー類を送り、そのデーターに基づき二酸化炭素排出量削減認証機関11が二酸化炭素排出量削減プロジェクトに基づき二酸化炭素排出量削減プロジェクトが実施されているのを確認して燃料の削減量を認証して二酸化炭素排出量削減証明書を発行することができる。 The fuel consumption management means 13 uses the inspection diver 6 of the maintenance management means 12 that measures and polishes the roughness of the propeller surface in water by using the inspection diver 6 of the inspector 9 on the ship that receives the fuel reduction confirmation. When the underwater polishing is necessary depending on the roughness, the underwater polishing is performed and the roughness measurement is performed again after the underwater polishing is completed. The inspector 9 collects and analyzes the measurement data and various data owned by the ship that receives the fuel reduction amount confirmation to determine the fuel reduction amount. The inspector 9 sends various data to the carbon dioxide emission reduction certification body 11, and based on the data, the carbon dioxide emission reduction certification body 11 implements the carbon dioxide emission reduction project based on the carbon dioxide emission reduction project. It is possible to issue a certificate of carbon dioxide emission reduction after confirming that the fuel has been reduced.
二酸化炭素排出量削減証明書発行手段14は、水中でプロペラ表面の粗度測定と研磨をおこなう保守管理手段12を行う二酸化炭素排出量削減認証プロジェクトを申請している該当船舶より出された各種データー類を二酸化炭素排出量削減認証機関11が審査すると共に燃料削減量を確認して認証し、確認された燃料削減量に当たる二酸化炭素分の二酸化炭素排出量削減証明書16の発行をすることができる。 The carbon dioxide emission reduction certificate issuance means 14 is a variety of data issued by a ship that has applied for a carbon dioxide emission reduction certification project that performs maintenance management means 12 that measures and polishes the roughness of the propeller surface in water. The carbon dioxide emission reduction certification body 11 examines and confirms the fuel reduction amount, and can issue the carbon dioxide emission reduction certificate 16 corresponding to the confirmed fuel reduction amount. .
水中でプロペラ表面の粗度測定と研磨をおこなう保守管理手段12と燃料消費量管理費手段13で確認出来た各種データー及び燃料消費量を検査官9が確認し、二酸化炭素排出量削減認証機関11にデーター通信15を使い各種データーを送る。又このデーター通信15を使い当該船舶より陸上の管理部門などに常時各種データーを送ることにより船舶の状況を共有することができ、より有効な燃料削減につながる保守管理ができるようになる。 The inspector 9 confirms various data and fuel consumption confirmed by the maintenance management means 12 and the fuel consumption management cost means 13 for measuring and polishing the roughness of the propeller surface in water, and the carbon dioxide emission reduction certification body 11 Various data is sent to the terminal using the data communication 15. Further, by using this data communication 15, various data are constantly sent from the ship to an onshore management department or the like, so that the situation of the ship can be shared, and maintenance management that leads to more effective fuel reduction can be performed.
データー通信15で送られてきた各種データー類により、二酸化炭素排出量削減認証機関11が当該船舶より申請された二酸化炭素排出量削減認証プロジェクトが実施されていることを確認して、燃料の削減量を二酸化炭素に換算して発行された二酸化炭素排出量削減証明書を発行する。 Reduce the amount of fuel consumption by confirming that the CO2 emission reduction certification authority 11 has applied for the carbon dioxide emission reduction certification project submitted by the ship based on various data sent via the data communication 15. Issue a carbon dioxide emission reduction certificate issued by converting CO2 into carbon dioxide.
図3はプロペラの水中保守管理時と通常運航時の消費燃料の比較図で、縦軸は消費燃料、横軸は就航開始から就航終了までの時間を示す。プロペラの保守管理を行わずに運航した場合の消費燃料量と、プロペラの保守管理を行いプロペラの粗度を良い状態で運航した場合の消費燃料量の比較を示す。 FIG. 3 is a comparison diagram of fuel consumption during underwater maintenance management and normal operation of the propeller, where the vertical axis represents fuel consumption and the horizontal axis represents the time from the start of service to the end of service. A comparison of the amount of fuel consumed when operating without propeller maintenance and the amount of fuel consumed when operating the propeller with good roughness and propeller maintenance is shown.
プロペラの保守整備を全く行わず運航した場合には、時間の経過とともにプロペラの効率が悪くなる。燃料効率の劣化にはいろいろな要因があるが、水中にあるプロペラに海洋性付着物が付くことが、主な燃料消費量増加の原因となっている。その他の積荷及び海象などの各種データーの要因は燃料消費に関してプロペラの効率に影響を与えるものではなく、プロペラの粗度はプロペラの性能を独自に取り出すことができる数値であり、燃料消費の増減に直接関係するものである、又水中研磨によりプロペラの粗度を2μm以下にして保守整備を行い運航した場合は、良い状態を維持して運航できるので燃料効率が悪くなるのに時間がかかるようになることを示す概念図である。 When operating without propeller maintenance, the propeller becomes less efficient over time. There are various factors in the deterioration of fuel efficiency, but marine deposits on the propellers in the water are the main causes of increased fuel consumption. Other data factors such as cargo and sea conditions do not affect the propeller efficiency with respect to fuel consumption, and the roughness of the propeller is a numerical value that can uniquely extract the performance of the propeller. It is directly related, and when operating with maintenance and maintenance with propeller roughness of 2 μm or less by underwater polishing, it can operate while maintaining good condition so that it takes time to deteriorate fuel efficiency It is a conceptual diagram which shows becoming.
図4はプロペラ表面粗度による燃料効率図である。(a)プロペラ効率推定曲線 (b)プロペラ表面粗度と燃料効率。
プロペラの表面粗度がRa30μmを超えると、燃料損失の割合が6%以上となる文献の引用図でもある。(ナカシマプロペラ株式会社のホームページ中の技術資料より引用1264640202140_0.htmlより引用)、
特に図4(b)はプロペラ表面粗度と燃料効率の関係を示し、横軸は、標準粗度の見本板であるルバートゲージのA~Fの見本板の粗度に対する、燃料損失割合を示す。(参考資料:※Townsin,R.L,“Estimating the Technical and Economic Penalting of Hull and   Propeller Roughness ”,SNAME Transactions Vol.89,1981,p295-318
※Stone Manganese Marine Ltd. “Propeller Surface Roughness and Fuel Economy”,
   SMM Technical Brief No.18)
 例えばプロペラの表面粗度の範囲をRa2μm以下Ra2μm~Ra5μm・Ra5μm~Ra10μmと逐次Ra5μm単位ごとにRa30μmまでプロペラ粗度による効率を設定して、プロペラ表面の粗度測定数値に照らし合わせてプロペラ効率を確定させることもできる。プロペラ効率を確定させることにより、保守点検を行わなかった場合の粗度数値と比較して、燃料削減量を確定することが可能となる。
FIG. 4 is a fuel efficiency diagram according to the surface roughness of the propeller. (a) Propeller efficiency estimation curve (b) Propeller surface roughness and fuel efficiency.
It is also a reference figure of a document in which the ratio of the fuel loss becomes 6% or more when the surface roughness of the propeller exceeds Ra 30 μm. (Quoted from the technical data on the website of Nakashima Propeller Co., Ltd., quoted from 1264640202140_0.html),
In particular, FIG. 4 (b) shows the relationship between the surface roughness of the propeller and the fuel efficiency, and the horizontal axis shows the fuel loss ratio with respect to the roughness of the A to F sample plates of the Lubert gauge which is a sample plate of the standard roughness. . (Reference material: * Townsin, RL, “Estimating the Technical and Economic Penalting of Hull and Propeller Roughness”, SNAME Transactions Vol. 89, 1981, p295-318
* Stone Manganese Marine Ltd. “Propeller Surface Roughness and Fuel Economy”,
SMM Technical Brief No. 18)
For example, the range of the surface roughness of the propeller is set to Ra2 μm or less Ra2 μm to Ra5 μm, Ra5 μm to Ra10 μm, and Ra5 μm is set to Ra30 μm for each unit. It can also be confirmed. By determining the propeller efficiency, it is possible to determine the amount of fuel reduction compared to the roughness value obtained when maintenance inspection is not performed.
図5は燃料消費量管理手段13のプログラムの動作フローを示す。燃料消費量管理手段13のプログラムを構成するプロペラの保守整備の流れと通常運行の流れを比較している。 FIG. 5 shows an operation flow of the program of the fuel consumption management means 13. The flow of maintenance of the propeller constituting the program of the fuel consumption management means 13 is compared with the flow of normal operation.
図5の左側は、水中でプロペラ表面の粗度測定と研磨をおこなう保守管理手段12を使いプロペラの表面粗度がRa30μmを超えないように管理している流れを現している。又その管理状況と燃料使用量と運航時の各種データーを収集して燃料消費量管理手段13のコンピューターに送っている図である。 The left side of FIG. 5 shows a flow in which the propeller surface roughness is managed so as not to exceed Ra 30 μm using the maintenance management means 12 that measures and polishes the roughness of the propeller surface in water. Also, the management status, fuel usage, and various data during operation are collected and sent to the computer of the fuel consumption management means 13.
図5の右側は、プロペラの管理を行わないで就航した場合の流れを現した図である。就航時の粗度は測定又は予測されている、就航後の粗度は測定又は予測されている。プロペラは時間の経過とともに汚れてくる。就航から就航終了までの間徐々に汚れてくるプロペラの粗度を、運航中の船舶の各種データーを入力することにより予測する、プロペラの粗度の汚れによる性能劣化分を事前に検証しておき、図5の左側の運航状態で収集した各種データーにより右側の保守管理をしなかった場合のプロペラの粗度の影響による燃料消費量を算出して比較できることを示している。 The right side of FIG. 5 is a diagram showing the flow when the aircraft is operated without propeller management. Roughness at the time of service is measured or predicted, and roughness after service is measured or predicted. Propellers get dirty over time. Propeller roughness, which gradually becomes dirty from service to completion of service, is predicted by inputting various data of the ship in operation, and the performance deterioration due to dirt on the propeller roughness is verified in advance. FIG. 5 shows that fuel consumption due to the influence of the roughness of the propeller can be calculated and compared based on various data collected in the operation state on the left side of FIG.
図6はプロペラの水中保守管理による二酸化炭素排出量削減証明書の発行の作業フロー図である。燃料削減量確認方法のプロペラの水中保守管理による燃料削減量確定と二酸化炭素排出量削減認証プロジェクトによる二酸化炭素排出量削減証明書の発行までの流れを示す。以下にその実施例を述べる。 FIG. 6 is a work flow diagram for issuing a carbon dioxide emission reduction certificate by underwater maintenance management of a propeller. The flow from the confirmation of fuel reduction by underwater maintenance management of the propeller of the fuel reduction amount confirmation method to the issuance of the carbon dioxide emission reduction certificate by the carbon dioxide emission reduction certification project is shown. Examples will be described below.
申請者は二酸化炭素排出量削減認証プロジェクト認証機関11に船舶プロペラの粗度測定と研磨を行う水中保守管理による燃料削減量確認方法の二酸化炭素排出量削減認証プロジェクトを二酸化炭素排出量削減認証プロジェクト認証機関11に提出し認証機関の認証をうける。 Applicant certified carbon dioxide emission reduction certification project to CO2 emission reduction certification project certification body 11 to measure CO2 emission reduction of fuel reduction amount confirmation method by underwater maintenance management to measure and polish ship propeller roughness Submit to the institution 11 and receive certification from the certification body.
船舶プロペラの粗度測定研磨を行う水中保守管理による二酸化炭素排出量削減認証プロジェクトは、燃料消費量管理手段13を使い、プロペラの状態と検証を受ける船舶が運航していた各種データーをコンピューターに入力して燃料消費量削減予測量を算出し、それを公的認証機関が燃料削減分として確認して認証し、その削減分の燃料から出る二酸化炭素排出量を二酸化炭素排出量削減分として認証を受ける。 The CO2 emission reduction certification project by underwater maintenance management, which performs roughness measurement polishing of ship propellers, uses fuel consumption management means 13 and inputs various data operated by the ship receiving the propeller status and verification to the computer The estimated amount of fuel consumption reduction is calculated, and the official certification body confirms and confirms it as the amount of fuel reduction, and the carbon dioxide emission from the fuel for the reduction is certified as the amount of carbon dioxide emission reduction. receive.
申請者が二酸化炭素排出量削減認証プロジェクト認証機関11に燃料削減量確認方法による二酸化炭素排出量削減認証プジェクト審査請求後、検査官9が申請船舶に出向き、水中でプロペラの保守管理行わなかった場合と、行った場合の違いを算出できる燃料消費量管理手段13のプログラムに基づき、プロペラの水中保守管理により燃料消費量の増加防止対策が行われていること、申請船舶が運航記録及び各種必要データーを収集して燃料消費量増加分を予測できるようにしていることを確認し、二酸化炭素排出量削減認証プロジェクトが実行できることを確認する。 When the applicant goes to the CO2 emission reduction certification project certification body 11 and requests the carbon dioxide emission reduction certification project examination by the fuel reduction amount confirmation method, the inspector 9 goes to the application ship and the propeller is not maintained and managed underwater Based on the program of the fuel consumption management means 13 that can calculate the difference when it is done, the propeller's underwater maintenance management is taking measures to prevent the increase in fuel consumption, the application ship records the operation records and various necessary data To confirm that the increase in fuel consumption can be predicted, and to confirm that the CO2 emission reduction certification project can be executed.
二酸化炭素排出量削減認証プロジェクトにある燃料消費量管理手段13のプログラムは、当該期間終了後粗度測定を行いその粗度結果により各種データーを収集し解析することにより燃料消費量を確定するものと、リアルタイムで、粗度に影響する各種データーを収集し解析することにより就航中の船舶プロペラの粗度予測を常に算出でき、運航中の燃料削減量を確定することができるものがある。 The program of the fuel consumption management means 13 in the carbon dioxide emission reduction certification project is to determine the fuel consumption by measuring the roughness after the end of the period and collecting and analyzing various data according to the roughness result. In some real-time, by collecting and analyzing various data affecting the roughness, it is possible to always calculate the roughness prediction of the in-service ship propeller and to determine the amount of fuel reduction during operation.
申請者は燃料消費量管理手段13のプログラムに基づき、プロペラの水中保守管理を行い、当該期間の二酸化炭素排出量削減システムによる二酸化炭素排出量削減認証プロジェクトを実施する。 The applicant performs underwater maintenance management of the propeller based on the program of the fuel consumption management means 13, and implements the carbon dioxide emission reduction certification project by the carbon dioxide emission reduction system for the period.
二酸化炭素排出量削減認証プロジェクト認証機関は検査官9を申請船舶に派遣し、検査官9はプロペラの水中保守管理による燃料削減量確認方法による二酸化炭素排出量削減認証プロジェクトに基づき各種データーを確認し、プロペラの水中保守管理による燃料消費量の増加防止対策が行われていること、又適正に燃料消費量管理手段13のプログラムが管理、運営されていることを確認し、燃料削減量を認証して、削減量に当たる二酸化炭素排出量削減証明書を発行する。 CO2 emission reduction certification project The certification body dispatches an inspector 9 to the application ship, and the inspector 9 confirms various data based on the carbon dioxide emission reduction certification project by the fuel reduction confirmation method by underwater maintenance management of the propeller. Confirm that the measures to prevent the increase in fuel consumption by underwater maintenance management of the propeller are being taken, and that the program of the fuel consumption management means 13 is properly managed and operated, and authenticate the fuel reduction amount. Issue a carbon dioxide emission reduction certificate corresponding to the reduction amount.
図7は船体抵抗と燃料消費の関係を示す。ナカシマプロペラ株式会社のホームページ中の技術資料(HTTP://WWW.NMRI.go.jp/main/cooperation/demae/zisseki/JSE-kouryu.pdf)の一部を引用したものである。以下にその引用を使って概要を述べる。 FIG. 7 shows the relationship between hull resistance and fuel consumption. A part of the technical data (HTTP: //WWW.NMRI.go.jp/main/cooperation/deme/zisseki/JSE-couru.pdf) on the website of Nakashima Propeller Co., Ltd. is cited. The following is an overview using that citation.
抵抗Rt の船が速度Vs で走るとするとRt×Vs が、船がする仕事つまり有効馬力となります。一方、T(プロペラの推力)×Va(プロペラ付近の流速)がプロペラのする仕事でスラスト馬力と呼びます。この有効馬力とスラスト馬力の比を船殻効率と言い、プロペラ付近の流速Va が小さいほど船殻効率が高くなりますから、流れの遅い船尾付近にプロペラを配置するわけです。タンカーで、もしプロペラを船首に付けたら船尾につけたプロペラにくらべて、実に30%近い省エネ効果が失われます。しかし船尾につけたとしても2 軸船のように船体の外側に出すと船殻効率は下がってしまいます。
(引用ここまで)
If a ship with resistance Rt runs at speed Vs, Rt x Vs is the work the ship does, that is, the effective horsepower. On the other hand, T (propeller thrust) x Va (velocity near the propeller) is the work that the propeller does, and is called thrust horsepower. The ratio of effective horsepower and thrust horsepower is called hull efficiency. The smaller the flow velocity Va near the propeller, the higher the hull efficiency. Therefore, a propeller is placed near the slow stern. With a tanker, if a propeller is attached to the bow, the energy saving effect will be lost by nearly 30% compared to a propeller attached to the stern. However, even if it is attached to the stern, hull efficiency will decrease if it is put out of the hull like a 2-axis ship.
(Quote here)
プロペラ効率は図7と引用文中に示したとおり、スラスト馬力と伝達馬力との間の効率である。又、プロペラ効率の低下をもたらす要因を次の段落にて述べる The propeller efficiency is the efficiency between the thrust horsepower and the transmission horsepower as shown in FIG. 7 and the quoted text. In the next paragraph, we will discuss the factors that cause a decrease in propeller efficiency.
 再度、ナカシマプロペラ株式会社のホームページ中の技術資料
(HTTP://WWW.NMRI.go.jp/main/cooperation/demae/zisseki/JSE-kouryu.pdf)
の一部を以下に引用する。
プロペラ効率を低下させる原因はほとんど次の3つで説明できます。
すなわち、1.運動量損失2.粘性損失3.回転損失の3損失は、プロペラの宿命みたいなもので、プロペラが流体を蹴って進む限り避けては通れない損失です。したがって、この損失だけを考慮した効率を理想効率と呼び、プロペラの効率は、決してこの理想効率を超えることはありません。
 (引用ここまで)
Again, technical data on the homepage of Nakashima Propeller Co., Ltd. (HTTP: //WWW.NMRI.go.jp/main/cooperation/demae/zisseki/JSE-couryu.pdf)
A part of is quoted below.
There are almost three reasons why propeller efficiency is reduced.
That is: 1. Momentum loss 2. Viscosity loss Rotational loss 3 is like the fate of a propeller, and is an unavoidable loss as long as the propeller kicks the fluid. Therefore, the efficiency considering only this loss is called ideal efficiency, and the efficiency of the propeller never exceeds this ideal efficiency.
(Quote here)
ここまででプロペラ効率が何かとそれを生じさせる要因について述べた。次に実際に航行した際のプロペラ効率の影響について説明する。 So far, we have described what propeller efficiency is and what causes it. Next, the influence of propeller efficiency when actually sailing will be described.
効率が1のときの船舶の速度をVs、有効馬力をP、船舶効率をμs(v)、プロペラ効率をμp(v)、伝達効率をμt(v)とすると、主機馬力Pt(v)は
 Pt(v)=P×μs(v)×μp(v)×μt(v)
 と表される。ここで、単純化して考えるために、各種効率の速度依存性を考慮せず、またμs=μt=1とすると
 Pt=P×μp=Rt×Vs×μp
   =Rt×Vt (Vt=Vs×μp)
 となる。但し、Rtは船舶の抵抗、Vsは効率が1のときの速度である。又、Vtはプロペラ効率を考慮した際の船舶の速度である。
 このことから、ある距離Dを進む場合の所要時間tは
 t=D/Vt=(D/Vs)×(1/μp)
 となり、プロペラ効率に反比例する。
 一定の有効馬力Pを常に発揮し続ける場合、エンジンに対する燃料の時間あたり噴射量は一定であるから、ある距離Dを進む場合の距離あたりの燃費はその所要時間に比例する。即ちプロペラ効率に反比例する。
 従って、ある基準となるプロペラ効率μp´を設定しておいて、プロペラ表面の粗度の実測値から割り出されるプロペラ効率をμpとすると、航行距離あたりの燃料の消費量は基準値の(μp´/μp)倍となる。この数値と燃料消費量の実測値とを用いることにより、実測粗度に基づくプロペラ効率μpで航行すると、基準となるプロペラ効率μp´で航行した場合に比べてどれだけの燃料削減になっているかが計算される。
 更に、燃料の化学組成から燃焼時の単位重量あたり二酸化炭素の発生量が計算できるので、二酸化炭素の削減量を計算することが出来る。
When the efficiency is 1, the speed of the ship is Vs, the effective horsepower is P, the ship efficiency is μs (v), the propeller efficiency is μp (v), and the transmission efficiency is μt (v). Pt (v) = P × μs (v) × μp (v) × μt (v)
It is expressed. Here, for simplification, if speed dependence of various efficiencies is not considered and μs = μt = 1, then Pt = P × μp = Rt × Vs × μp
= Rt × Vt (Vt = Vs × μp)
It becomes. However, Rt is the resistance of the ship, and Vs is the speed when the efficiency is 1. Vt is the speed of the ship when the propeller efficiency is taken into consideration.
From this, the required time t for traveling a certain distance D is t = D / Vt = (D / Vs) × (1 / μp)
And is inversely proportional to the propeller efficiency.
When the constant effective horsepower P is constantly exerted, the fuel injection amount per hour for the engine is constant, so the fuel consumption per distance when traveling a certain distance D is proportional to the required time. That is, it is inversely proportional to the propeller efficiency.
Therefore, if a certain propeller efficiency μp ′ is set and the propeller efficiency calculated from the measured roughness of the propeller surface is μp, the fuel consumption per cruising distance is (μp '/ Μp) times. By using this value and the actual measured value of fuel consumption, how much fuel is saved when navigating with the propeller efficiency μp ′ based on the measured roughness compared to navigating with the standard propeller efficiency μp ′ Is calculated.
Furthermore, since the amount of carbon dioxide generated per unit weight during combustion can be calculated from the chemical composition of the fuel, the amount of carbon dioxide reduction can be calculated.
就航中の船舶の新しい燃料削減方法としての燃料削減の確定が行え、プロペラの水中保守整備を行う潜水業務が増大する。 Fuel reduction as a new fuel reduction method for ships in service can be confirmed, and diving work for underwater maintenance of propellers will increase.
1  プロペラ
  2  水中粗度計
3  粗度測定補助箱
4  基準粗度板
5  水中ビデオカメラ及び通信装置
6  検査ダイバー
  7  検査補助ダイバー
8  モニターテレビ
9  検査官
 10  作業船
 11  二酸化炭素排出量削減認証機関
 12  粗度計測と研磨を行う保守管理手段
 13  燃料消費量管理手段
 14  二酸化炭素排出量削減証明書発行手段
 15  データー通信
 16  二酸化炭素排出量削減証明書
 
 
 
 
 
DESCRIPTION OF SYMBOLS 1 Propeller 2 Underwater roughness meter 3 Roughness measurement auxiliary box 4 Reference roughness board 5 Underwater video camera and communication apparatus 6 Inspection diver 7 Inspection auxiliary diver 8 Monitor television 9 Inspector 10 Work ship 11 Carbon dioxide emission reduction certification body 12 Maintenance management means for measuring roughness and polishing 13 Fuel consumption management means 14 Carbon dioxide emission reduction certificate issuing means 15 Data communication 16 Carbon dioxide emission reduction certificate



Claims (3)

  1. 水中でプロペラ表面の粗度測定を行える水中粗度計を使い粗度測定を行い、水中でプロペラの研磨をおこなう保守管理手段と、燃料削減量を算出する燃料消費量管理手段を設けることにより、水中でプロペラ表面の粗度測定と研磨による、燃料削減量と燃料削減に伴う二酸化炭素排出量削減分を算出することを特徴とする船舶プロペラの水中保守管理による燃料削減量確認方法。 By providing a maintenance management means to measure the roughness using an underwater roughness meter that can measure the roughness of the propeller surface in water and polish the propeller in water, and a fuel consumption management means to calculate the fuel reduction amount, A method for confirming a fuel reduction amount by underwater maintenance management of a ship propeller, characterized by calculating a fuel reduction amount and a carbon dioxide emission reduction amount due to the fuel reduction by measuring and polishing the surface of the propeller in water.
  2. 請求項1記載の燃料消費管理手段は、水中でプロペラを良い状態に保った保守管理結果と、保守管理を行わなかった場合を比較できる、就航中のプロペラ粗度に影響を及ぼす各種データーを収集し解析してプロペラの汚れを予測し、プロペラの汚れによるプロペラ性能を判断し燃料増加分を確定することを特徴とする
    請求項1に記載の船舶プロペラの水中保守管理による燃料削減量確認方法。
    The fuel consumption management means according to claim 1 collects various data that affect the roughness of the propeller during service, enabling comparison between the maintenance management result in which the propeller is kept in good condition and the maintenance management is not performed. 2. The method for confirming fuel reduction by underwater maintenance management of a ship propeller according to claim 1, wherein the propeller dirt is predicted by analysis and the propeller performance due to the propeller dirt is judged to determine the fuel increase.
  3. 燃料消費量管理手段は、検証する期間中の各種データーにより、燃料削減量を算出するものと、検証する期間中の粗度測定結果と、プロペラの粗度に影響するデーターを常に収集し解析することにより就航中の船舶プロペラの粗度予測値を算出し、就航中にリアルタイムで燃料削減量を算出することができるものとで構成されていることを特徴とする
    請求項1又は請求項2に記載の船舶プロペラの水中保守管理による燃料削減量確認方法。
     
     
     
     
    The fuel consumption management means always collects and analyzes the fuel savings calculated based on various data during the verification period, the roughness measurement results during the verification period, and the data affecting the roughness of the propeller. According to claim 1 or claim 2, characterized in that the estimated roughness value of the ship propeller in service can be calculated and the fuel reduction amount can be calculated in real time during service. The fuel reduction amount confirmation method by underwater maintenance management of the described ship propeller.



PCT/JP2010/060942 2009-10-23 2010-06-28 Method for checking fuel reduction amount by underwater maintenance management of ship propeller WO2011048849A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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Publication number Priority date Publication date Assignee Title
CN103600821A (en) * 2013-11-07 2014-02-26 江苏科技大学 Omni-directional floating and wall-climbing underwater robot
IT202100007754A1 (en) * 2021-03-30 2022-09-30 Ww Marine Tech S R L METHOD AND APPARATUS FOR PREDICTING THE FORMATION OF BIOLOGICAL FOULING IN VESSELS USABLE FOR THE OPTIMIZATION OF CLEANING OPERATIONS AT WASHING INSTALLATIONS

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