CN113468629B - Energy consumption splitting method for refrigeration season of clean air conditioning system - Google Patents
Energy consumption splitting method for refrigeration season of clean air conditioning system Download PDFInfo
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- 238000005265 energy consumption Methods 0.000 title claims abstract description 384
- 238000004378 air conditioning Methods 0.000 title claims abstract description 69
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Abstract
The invention discloses a method for splitting energy consumption of a clean air conditioning system in a refrigeration season, which comprises the following steps: calculating equipment side energy consumption and system side energy consumption; selecting a proper splitting method to split the energy consumption to a spatial level according to whether the clean area and the non-clean area share a cold and heat source or not; the energy consumption splitting method splits the energy consumption of the heating, ventilating and air conditioning into the energy consumption of a cold and heat source system item, the energy consumption of a water system transmission and distribution item and the energy consumption of a wind system transmission and distribution item from a system level; the energy consumption of a water chilling unit, the energy consumption of a water pump, the energy consumption of a fan and the energy consumption of auxiliary reheating equipment are highlighted from the level of equipment; energy consumption of the air conditioning system can be separated from the space level to the clean room. The energy-saving work of the clean room can be better guided.
Description
Technical Field
The invention relates to the technical field of building energy consumption subentry measurement, in particular to a clean air conditioning system refrigeration season energy consumption splitting method.
Background
The clean air conditioner is mainly used in the medical and health industry, the electronic industry and the food industry, and the level of the medical and health and the quality of the produced products are determined by the cleanliness. In order to satisfy the required cleanliness and pressure difference in the clean area, a large amount of energy is consumed to maintain the operation of the clean air conditioning system. In the building energy consumption composition, the energy consumption of the heating, ventilating and air conditioning system is one item with the largest total energy consumption proportion in various energy consumptions, and the splitting of the energy consumption of the heating, ventilating and air conditioning system from the building energy consumption alone has no great significance on deep energy-saving work, so that the splitting of the energy consumption of the air conditioning system is continued, and the purpose of analyzing the energy consumption from different angles such as an equipment level, a system level and a space level is achieved. Different from a comfortable air conditioner, the clean air conditioning system has great difference from the aspects of air transmission and distribution, operation time, parameter control and the like, and particularly, the energy consumption of the air transmission and distribution item accounts for great proportion of the total energy consumption, so the energy consumption characteristics of the clean air conditioning system are highlighted in the splitting process, and the splitting method of the civil air conditioning system cannot be carried.
At present, the existing energy consumption splitting method mainly comprises an energy consumption bill season splitting method, an annual accumulation method and an energy consumption simulation method. The energy consumption bill season splitting method considers the energy consumption except for the heating ventilation air conditioning system to be relatively stable, so that the energy consumption in transition seasons (4 months, 5 months, 10 months and 11 months) can be calculated firstly, and then the energy consumption in the transition seasons is subtracted from the energy consumption in the cooling season or the heating season to obtain the energy consumption of the air conditioning system. The running time method is to calculate the energy consumption of the air conditioning system all the year round according to the power and the quantity of energy-using equipment, the running condition of the equipment and the like. The energy consumption simulation method is to utilize EnergyPlus, Equest and other software to carry out modeling analysis on the building to obtain energy consumption data. The energy consumption bill season splitting method can only split the energy consumption of the heating ventilation air conditioning system, but can not split the energy consumption of each sub item in the system; the annual accumulation method and the energy consumption simulation method can only roughly split the energy consumption of the equipment side, and cannot split the energy consumption to the space level.
In summary, various existing splitting methods have limitations, and therefore, an energy consumption splitting method considering three aspects of equipment, a system and a space is provided for a clean air conditioning system to highlight the energy utilization characteristics.
Disclosure of Invention
The invention provides a clean air conditioning system refrigeration season energy consumption splitting method, which aims to solve the technical problems of the existing energy consumption splitting method.
In order to solve the technical problems, the invention provides the following technical scheme:
a method for splitting energy consumption of a refrigerating season of a clean air conditioning system comprises the following steps:
calculating various equipment energy consumptions of the clean air-conditioning system to be subjected to energy consumption splitting; wherein the device energy consumption comprises: energy consumption of a refrigerating unit, energy consumption of a cooling tower fan, energy consumption of a cooling water pump, energy consumption of a freezing water pump, energy consumption of a water replenishing pump, energy consumption of a combined air conditioning unit fan, energy consumption of a fresh air unit fan, energy consumption of an exhaust fan unit fan and energy consumption of electric reheating;
adding the energy consumption of the same equipment to obtain the equipment side energy consumption of the clean air-conditioning system to be subjected to energy consumption splitting;
calculating the system side energy consumption of the clean air-conditioning system to be subjected to energy consumption splitting; wherein the system side energy consumption comprises: energy consumption of a cold and heat source system, energy consumption of a water system and energy consumption of a wind system; the energy consumption of the cold and heat source system comprises: energy consumption of a refrigerating unit and energy consumption of a fan of a cooling tower; the water system energy consumption comprises: cooling water pump energy consumption, freezing water pump energy consumption and water replenishing pump energy consumption; the wind system energy consumption comprises: the energy consumption of a fan of a combined air conditioning unit, the energy consumption of a fan of a fresh air unit, the energy consumption of a fan of an exhaust unit and the energy consumption of electric reheating required for reducing the temperature difference of air supply are reduced;
a preset splitting method is selected to split energy consumption to a spatial level; wherein,
when the clean area and the non-clean area share a cold and heat source, the preset splitting method comprises the following steps: splitting the energy consumption of a cold and heat source system of the clean area according to the load ratio; splitting the energy consumption of a water system of the clean area according to the flow ratio; splitting the energy consumption of cold and heat source systems of each clean room according to the load ratio; splitting the energy consumption of each clean room water system according to the flow ratio; splitting the energy consumption of each clean room air system according to the air volume ratio; adding energy consumption of a cold and heat source system, water system and air system of a certain clean room to obtain total energy consumption of the clean air conditioning system of the clean room;
when the clean area and the non-clean area do not share a cold and heat source, the preset splitting method comprises the following steps: splitting the energy consumption of cold and heat source systems of each clean room according to the load ratio; splitting the energy consumption of each clean room water system according to the flow ratio; splitting the energy consumption of each clean room air system according to the air volume ratio; the energy consumption of a cold and heat source system, the energy consumption of a water system and the energy consumption of an air system of a certain clean room are added to obtain the total energy consumption of the clean air conditioning system of the clean room.
Further, the expression of the duty ratio is as follows:
the expression of the flow ratio is as follows:
the expression of the air volume ratio is as follows:
further, computing device energy is time consuming, and devices fall into four categories according to energy usage principles, including: the energy consumption of the water cooling unit, the energy consumption of the water pump, the energy consumption of the fan and the energy consumption of electric reheating.
Further, the method for calculating the energy consumption of the water chilling unit comprises the following steps:
determining a load rate-power performance curve of the water chilling unit in a non-full load operation state;
determining the hourly flow of chilled water at the outlet of the water chilling unit;
converting the hourly flow of the chilled water into hourly cooling load, and calculating the specific value of the hourly cooling load and the cold capacity of full-load operation to obtain the hourly load rate of the water chilling unit;
determining the hourly power of the water chilling unit according to the hourly load rate of the water chilling unit, and further obtaining the hourly energy consumption of the water chilling unit;
and accumulating the time-by-time energy consumption of the water chilling unit according to the splitting requirement to obtain the daily energy consumption, the monthly energy consumption, the seasonal energy consumption and the annual energy consumption of the water chilling unit.
Further, the method for calculating the energy consumption of the water pump unit comprises the following steps:
determining a flow-power performance curve of the water pump unit at each rotating speed;
determining the hourly rotating speed of the water pump unit;
selecting a flow-power performance curve corresponding to each hourly rotating speed;
determining the water pump power under each time-by-time flow according to a flow-power curve corresponding to the time-by-time rotating speed, and further obtaining the time-by-time energy consumption of the water pump unit;
and accumulating the time-by-time energy consumption of the water pump unit according to the splitting requirement to obtain daily energy consumption, monthly energy consumption, seasonal energy consumption and annual energy consumption of the water pump unit.
Further, the method for calculating the energy consumption of the fan comprises the following steps:
determining a frequency-power performance curve of the fan unit;
determining the hourly rotating speed of the fan set;
determining the hourly power of the fan according to the hourly rotating speed of the fan unit so as to obtain the hourly energy consumption of the fan;
and accumulating the time-by-time energy consumption of the fan according to the splitting requirement to obtain daily energy consumption, monthly energy consumption, seasonal energy consumption and annual energy consumption of the fan.
Further, the method for calculating the energy consumption of the electric reheating comprises the following steps:
determining the opening condition of the electric reheating section;
counting the hourly power of the electric reheating section, and further obtaining the hourly energy consumption of the electric reheating;
and accumulating the electric reheating time-by-time energy consumption according to the splitting requirement to obtain the daily energy consumption, the monthly energy consumption, the seasonal energy consumption and the annual energy consumption of the electric reheating.
The technical scheme provided by the invention has the beneficial effects that at least:
the method for splitting the energy consumption of the clean air-conditioning system in the cooling season splits the energy consumption of the heating ventilation air-conditioning into the energy consumption of a cold and heat source system item, the energy consumption of a water system transmission and distribution item and the energy consumption of a wind system transmission and distribution item from the system level; the energy consumption of cold and heat source units, the energy consumption of refrigeration and cooling water pumps and the energy consumption of fans are highlighted from the level of equipment; energy consumption of the air conditioning system can be separated from the space level to the clean room. The energy-saving work of the clean room can be better guided.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of an energy consumption classification model of a clean air conditioning system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment provides a method for splitting energy consumption of a clean air-conditioning system in a cooling season, which splits the energy consumption of a heating, ventilating and air-conditioning system into cold and heat source system item energy consumption, water system transmission and distribution item energy consumption and wind system transmission and distribution item energy consumption from a system level; the energy consumption of cold and heat source units, the energy consumption of refrigeration and cooling water pumps and the energy consumption of fans are highlighted from the level of equipment; the energy consumption of the clean air conditioning system of a certain individual clean room can be separated from the space level. Moreover, in order to better guide the energy-saving work of the clean room, the energy consumption splitting method provided by the embodiment can be used for making a space level cold and heat source system item, a water system item and a wind system item time-by-time energy consumption curve, a day-by-day energy consumption curve and a month-by-month energy consumption curve.
Before the implementation of the splitting method of this embodiment, the energy consumption of the clean air-conditioning system needs to be classified from the system side and the equipment side, and for this reason, the present embodiment provides a general classification model of the energy consumption of the clean air-conditioning system as shown in fig. 1.
The splitting method provided by the embodiment aims at two conditions of a clean air conditioner:
1. the clean air conditioner and the comfortable air conditioner share cold and heat sources (a chilled water pump, a cooling water pump and a cooling tower);
2. the clean air conditioner and the comfortable air conditioner do not share cold and heat sources (a chilled water pump, a cooling water pump and a cooling tower).
The splitting method provided by this embodiment is divided into two parts, where the first part is statistical energy consumption (energy consumption of energy-consuming device-energy consumption of device side-energy consumption of system), and the second part is splitting energy consumption. The energy consumption can be counted by a principle calculation method aiming at the first part of the statistical energy consumption, part of basic parameters (water pump flow and fan rotating speed) need to be collected by the method, and a related basic parameter collecting tool comprises a flow sensor and a rotating speed sensor.
Based on the above, the method for splitting energy consumption of the clean air conditioning system in the cooling season includes the following steps:
step 1, calculating the energy consumption of equipment: energy consumption of a refrigerating unit, energy consumption of a cooling water pump, energy consumption of a freezing water pump, energy consumption of a water replenishing pump, energy consumption of a combined air conditioning unit fan, energy consumption of a fresh air unit fan, energy consumption of an exhaust fan unit fan and energy consumption of electric reheating;
step 2, adding the energy consumption of the same equipment to obtain the energy consumption of the equipment side;
step 3, calculating the energy consumption of the system side: energy consumption of a cold and heat source system: the energy consumption of the refrigerating unit and the energy consumption of a fan of the cooling tower; energy consumption of a water system: the energy consumption of a cooling water pump, the energy consumption of a freezing water pump and the energy consumption of a water replenishing pump; energy consumption of the wind system: the energy consumption of a fan of a combined air conditioning unit, the energy consumption of a fan of a fresh air unit, the energy consumption of a fan of an exhaust unit and the energy consumption of electric reheating are combined;
step 4, judging whether the clean area and the non-clean area share cold and heat sources (a refrigeration water pump, a cooling water pump and a cooling tower);
step 5, selecting a proper splitting method to split the energy consumption to a space level;
if the clean area and the non-clean area share cold and heat sources (a freezing water pump and a cooling water pump), selecting a splitting scheme A, otherwise, adopting a splitting scheme B;
scheme A:
step 5-A-1, splitting the energy consumption of a cold and heat source system of the clean area according to the load ratio; splitting the energy consumption of a water system of the clean area according to the flow ratio; the condition of sharing a fan can not occur in the clean area and the non-clean area, and the air system does not need to be split;
step 5-A-2, splitting the energy consumption of the cold and heat source systems of each clean room according to the load ratio; splitting the energy consumption of each clean room water system according to the flow ratio; splitting the energy consumption of each clean room air system according to the air volume ratio;
and 5-A-3, adding the energy consumption of a cold and heat source system, the energy consumption of a water system and the energy consumption of an air system of a certain clean room to obtain the total energy consumption of the clean air conditioning system of the clean room.
Scheme B
Step 5-B-1, splitting the energy consumption of the cold and heat source systems of each clean room according to the load ratio; splitting the energy consumption of each clean room water system according to the flow ratio; splitting the energy consumption of each clean room air system according to the air volume ratio;
note:
the load ratio is as follows:
the flow ratio is as follows:
air volume ratio:
and 5-B-2, adding the energy consumption of a cold and heat source system, the energy consumption of a water system and the energy consumption of an air system of a certain clean room to obtain the total energy consumption of the clean air conditioning system of the clean room.
Further, when calculating the energy consumption of the device, the present embodiment classifies the device into four categories according to different energy utilization principles: the energy consumption calculation method of the cold and heat source unit equipment, the water pump equipment, the fan equipment and the auxiliary equipment comprises the following steps:
the energy consumption calculation method of the water chilling unit comprises the following steps:
step 1, inquiring a specification of a water chilling unit to determine a load rate-power performance curve in a non-full-load running state;
step 2, obtaining the hourly flow of the chilled water at the outlet of the water chilling unit according to the flow sensor;
step 3, converting the hourly chilled water flow into hourly cooling loads, and calculating the specific value of the hourly cooling loads and the full-load running cold quantity to obtain hourly load rates;
step 4, determining the hourly power of the water chilling unit according to the hourly load rate to further obtain hourly energy consumption;
and 5, accumulating the time-by-time energy consumption to obtain daily energy consumption, monthly energy consumption, seasonal energy consumption and annual energy consumption.
The energy consumption calculation method of the water pump unit comprises the following steps:
step 1, inquiring a water pump specification to determine a flow-power performance curve of a water pump at each rotating speed;
step 2, obtaining the hourly rotating speed of the water pump unit according to a pump shaft upper rotating speed sensor or counting the hourly rotating speed of the water pump unit according to a water pump parameter monitoring system (water pump frequency converter) in a central control system;
step 3, selecting a flow-power performance curve corresponding to each hourly rotating speed;
step 4, determining the power of the water pump under each hourly flow according to a flow-power curve corresponding to the hourly rotating speed so as to obtain hourly energy consumption;
and 5, accumulating the time-by-time energy consumption to obtain daily energy consumption, monthly energy consumption, seasonal energy consumption and annual energy consumption.
The fan energy consumption calculation method comprises the following steps:
step 1, inquiring a fan specification to determine a fan set frequency-power performance curve;
step 2, obtaining the hourly rotating speed of the fan according to a rotational speed sensor in the fan or counting the hourly frequency of the fan according to a fan parameter monitoring system (fan frequency converter) in a central control system;
step 3, determining the hourly power of the fan according to the hourly rotating speed of the fan so as to obtain hourly energy consumption;
and 4, accumulating the time-by-time energy consumption to obtain daily energy consumption, monthly energy consumption, seasonal energy consumption and annual energy consumption.
The electric reheating energy consumption calculation method comprises the following steps:
step 1, determining the opening condition of an electric reheating section according to operation setting;
step 2, counting the hourly power of the electric reheating section to obtain hourly energy consumption;
and step 3, accumulating the time-by-time energy consumption to obtain daily energy consumption, monthly energy consumption, seasonal energy consumption and annual energy consumption.
The following further illustrates the effect of the splitting method provided by this embodiment by specific application cases.
Case 1
The case gives an energy consumption splitting case of a clean air conditioning system for refrigerating a month when a cold and heat source, a freezing water pump, a cooling water pump and a cooling tower are independently arranged in a clean area of a certain hospital, and aims to obtain the energy consumption of an operating room in the clean area on the premise of mounting an electric meter as little as possible.
The cold energy of the clean area corresponding to the case is provided by a single screw type water chilling unit; matching a variable-frequency chilled water pump and a variable-frequency cooling water pump; the case target operating room is composed of an operating room and a dressing room, and the operating room corresponds to a combined air conditioning unit, a fresh air unit and an exhaust fan unit; the combined air conditioning unit is provided with an electric reheating section and is started along with the starting of the combined air conditioner, and the equipment parameters are shown in the table 1. In order to express the splitting process as concisely as possible in the case, the equipment with the same principle only serves as an example of an energy calculation method for explaining the equipment, and specifically, the energy consumption of a cold and heat source unit takes a water chilling unit as an example, the energy consumption of a water pump unit takes a chilled water pump as an example, the energy consumption of a fan takes a combined air conditioning unit as an example, and the energy consumption of an auxiliary unit takes electric reheating energy consumption as an example; the basic parameters involved in the case calculation process are represented by letters, and the curve graphs involved are represented by general functions.
Table 1 equipment parameters referred to in case 1
Note:
load factor: the actual cooling load is proportional to the maximum cooling load.
Percentage of power: at partial load, the input power of the chiller is a percentage of the rated power.
According to the calculation process, the following results are obtained: the energy consumption of the water chilling unit is E10(ii) a Energy consumption of the refrigerating water pump is E20Is cool and coolThe energy consumption of the water pump is E21The energy consumption of the water replenishing pump is E22(ii) a Energy consumption of combined air conditioning unit is E30The energy consumption of the fresh air handling unit is E31The energy consumption of the exhaust fan unit is E32(ii) a Electric reheating energy consumption is E40。
Table 2 case 2 fractional energy consumption in set time period between surgeries
Through the split, the subentry energy consumption in the set time period of the operation room is as follows: the energy consumption calculation result of the water chilling unit is e10The energy consumption calculation result of the chilled water pump is e20The energy consumption calculation result of the cooling water pump is e21The energy consumption calculation result of the water replenishing pump is e22The energy consumption of the fan of the combined air conditioning unit is e30The fan energy consumption of the fresh air handling unit is e31The energy consumption of the fan of the exhaust fan unit is e32Electric reheating energy consumption is e40。
Case 2
The case gives an energy consumption splitting case of a clean air conditioning system for refrigerating a month when a clean area and a non-clean area of a certain hospital share a cold and heat source, a freezing water pump, a cooling water pump and a cooling tower, and aims to obtain the energy consumption of a hand brushing room of an operating room of the clean area on the premise of mounting an electric meter as few as possible. The cooling capacity of the air conditioning area corresponding to the case is provided by a centrifugal water chilling unit; each water chilling unit is matched with two variable-frequency freezing water pumps and two variable-frequency cooling water pumps; the case target operating room is composed of an operating room, a dressing room and a hand brushing room, and corresponds to a combined air conditioning unit, a fresh air unit and an exhaust fan unit; the combined air conditioning unit is provided with an electric reheating section and is started along with the starting of the combined air conditioner, and the equipment parameters are shown in a table 3. In order to express the splitting process as concisely as possible in the case, the equipment with the same principle is only used for explaining an energy calculation method for the equipment, specifically, the energy consumption of cold and heat source units is taken as a water chilling unit as an example, the energy consumption of a water pumping unit is taken as an example, the energy consumption of a fan is taken as a fresh air unit as an example, and the energy consumption of auxiliary type is taken as an example of the energy consumption of electric reheating type; the basic parameters involved in the calculation process of the example are represented by letters, and the curve graphs involved are represented by general functions.
Table 3 equipment parameters related to case 2
According to the calculation, the following results are obtained: the energy consumption of the water chilling unit is E10(ii) a The energy consumption of the cooling water pump 1 is E20The energy consumption of the cooling water pump 2 is E21The energy consumption of the chilled water pump 1 is E22The energy consumption of the refrigerating water pump 2 is E23The energy consumption of the water replenishing pump is E24(ii) a The energy consumption of the fresh air handling unit is E30And the energy consumption of the combined air conditioning unit is E31The energy consumption of the exhaust fan unit is E32(ii) a Electric reheating energy consumption is E40。
Table 4 case 2 fractional energy consumption in set time period between surgeries
Through the split, the subentry energy consumption in the set time period of the operation room is as follows: the energy consumption calculation result of the water chilling unit is e10The energy consumption calculation result of the cooling water pump is e20+e21The energy consumption calculation result of the chilled water pump is e22+e23The energy consumption calculation result of the water replenishing pump is e24The energy consumption of the fan of the combined air conditioning unit is e31The fan energy consumption of the fresh air handling unit is e30The energy consumption of the fan of the exhaust fan unit is e32Electric reheating energy consumption is e40。
In summary, the present embodiment provides a method for splitting energy consumption of a clean air conditioning system in a cooling season, which splits energy consumption of a heating, ventilating and air conditioning system into energy consumption of a cold and heat source system item, energy consumption of a water system transmission and distribution item, and energy consumption of a wind system transmission and distribution item from a system level; the energy consumption of cold and heat source units, the energy consumption of refrigeration and cooling water pumps and the energy consumption of fans are highlighted from the level of equipment; energy consumption of the air conditioning system can be separated from the space level to the clean room. The energy-saving work of the clean room can be better guided.
Further, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
It should be noted that the above describes only a preferred embodiment of the invention and that, although a preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, once having the benefit of the teachings of the present invention, numerous modifications and adaptations can be made without departing from the principles of the invention and are intended to be within the scope of the invention. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Claims (7)
1. A method for splitting energy consumption of a refrigerating season of a clean air conditioning system is characterized by comprising the following steps:
calculating various equipment energy consumptions of the clean air-conditioning system to be subjected to energy consumption splitting; wherein the device energy consumption comprises: energy consumption of a refrigerating unit, energy consumption of a cooling water pump, energy consumption of a freezing water pump, energy consumption of a water replenishing pump, energy consumption of a combined air conditioning unit fan, energy consumption of a fresh air unit fan, energy consumption of an exhaust unit fan, energy consumption of a cooling tower fan and energy consumption of electric reheating;
adding the energy consumption of the same equipment to obtain the equipment side energy consumption of the clean air-conditioning system to be subjected to energy consumption splitting;
calculating the system side energy consumption of the clean air-conditioning system to be subjected to energy consumption splitting; wherein the system side energy consumption comprises: energy consumption of a cold and heat source system, energy consumption of a water system and energy consumption of a wind system; the energy consumption of the cold and heat source system comprises: energy consumption of a refrigerating unit and energy consumption of a fan of a cooling tower; the water system energy consumption comprises: cooling water pump energy consumption, freezing water pump energy consumption and water replenishing pump energy consumption; the wind system energy consumption comprises: the energy consumption of a fan of a combined air conditioning unit, the energy consumption of a fan of a fresh air unit, the energy consumption of a fan of an exhaust unit and the energy consumption of electric reheating required for reducing the temperature difference of air supply are reduced;
a preset splitting method is selected to split energy consumption to a spatial level; wherein,
when the clean area and the non-clean area share a cold and heat source, the preset splitting method comprises the following steps: splitting the energy consumption of a cold and heat source system of the clean area according to the load ratio; splitting the energy consumption of a water system of the clean area according to the flow ratio; splitting the energy consumption of cold and heat source systems of each clean room according to the load ratio; splitting the energy consumption of each clean room water system according to the flow ratio; splitting the energy consumption of each clean room air system according to the air volume ratio; adding energy consumption of a cold and heat source system, water system and air system of a certain clean room to obtain total energy consumption of the clean air conditioning system of the clean room;
when the clean area and the non-clean area do not share a cold and heat source, the preset splitting method comprises the following steps: splitting the energy consumption of cold and heat source systems of each clean room according to the load ratio; splitting the energy consumption of each clean room water system according to the flow ratio; splitting the energy consumption of each clean room air system according to the air volume ratio; the energy consumption of a cold and heat source system, the energy consumption of a water system and the energy consumption of an air system of a certain clean room are added to obtain the total energy consumption of the clean air conditioning system of the clean room.
2. The method for splitting cooling season energy consumption of a clean air conditioning system as claimed in claim 1, wherein the load ratio is expressed as follows:
the expression of the flow ratio is as follows:
the expression of the air volume ratio is as follows:
3. the method as claimed in claim 1, wherein the energy consumption of the equipment is calculated and the equipment is classified into four categories according to the energy consumption principle, including: the energy consumption of the water cooling unit, the energy consumption of the water pump, the energy consumption of the fan and the energy consumption of electric reheating.
4. The clean air conditioning system refrigerating season energy consumption splitting method as claimed in claim 3, wherein the method for calculating the energy consumption of the water chilling unit comprises the following steps:
determining a load rate-power performance curve of the water chilling unit in a non-full load operation state;
determining the hourly flow of chilled water at the outlet of the water chilling unit;
converting the hourly flow of the chilled water into hourly cooling load, and calculating the specific value of the hourly cooling load and the cold capacity of full-load operation to obtain the hourly load rate of the water chilling unit;
determining the hourly power of the water chilling unit according to the hourly load rate of the water chilling unit, and further obtaining the hourly energy consumption of the water chilling unit;
and accumulating the time-by-time energy consumption of the water chilling unit according to the splitting requirement to obtain the daily energy consumption, the monthly energy consumption, the seasonal energy consumption and the annual energy consumption of the water chilling unit.
5. The clean air conditioning system refrigerating season energy consumption splitting method as claimed in claim 3, wherein the method for calculating the energy consumption of the water pump unit comprises the following steps:
determining a flow-power performance curve of the water pump unit at each rotating speed;
determining the hourly rotating speed of the water pump unit;
selecting a flow-power performance curve corresponding to each hourly rotating speed;
determining the water pump power under each time-by-time flow according to a flow-power curve corresponding to the time-by-time rotating speed, and further obtaining the time-by-time energy consumption of the water pump unit;
and accumulating the time-by-time energy consumption of the water pump unit according to the splitting requirement to obtain daily energy consumption, monthly energy consumption, seasonal energy consumption and annual energy consumption of the water pump unit.
6. The clean air conditioning system cooling season energy consumption splitting method as claimed in claim 3, wherein the fan energy consumption calculating method comprises:
determining a frequency-power performance curve of the fan unit;
determining the hourly rotating speed of the fan set;
determining the hourly power of the fan according to the hourly rotating speed of the fan unit so as to obtain the hourly energy consumption of the fan;
and accumulating the time-by-time energy consumption of the fan according to the splitting requirement to obtain daily energy consumption, monthly energy consumption, seasonal energy consumption and annual energy consumption of the fan.
7. The clean air conditioning system cooling season energy consumption splitting method as claimed in claim 3, wherein the method for calculating the electric reheating energy consumption comprises:
determining the opening condition of the electric reheating section;
counting the hourly power of the electric reheating section, and further obtaining the hourly energy consumption of the electric reheating;
and accumulating the electric reheating time-by-time energy consumption according to the splitting requirement to obtain the daily energy consumption, the monthly energy consumption, the seasonal energy consumption and the annual energy consumption of the electric reheating.
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