CN112611124A - Fresh air cooling, dehumidifying and desalting system of machine room driven by waste heat of internal combustion engine power - Google Patents
Fresh air cooling, dehumidifying and desalting system of machine room driven by waste heat of internal combustion engine power Download PDFInfo
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- CN112611124A CN112611124A CN202011508660.2A CN202011508660A CN112611124A CN 112611124 A CN112611124 A CN 112611124A CN 202011508660 A CN202011508660 A CN 202011508660A CN 112611124 A CN112611124 A CN 112611124A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 150
- 239000002918 waste heat Substances 0.000 title claims abstract description 91
- 238000001816 cooling Methods 0.000 title claims abstract description 77
- 238000011033 desalting Methods 0.000 title claims description 60
- 238000010521 absorption reaction Methods 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000010248 power generation Methods 0.000 claims abstract description 26
- 238000007791 dehumidification Methods 0.000 claims abstract description 25
- 238000010612 desalination reaction Methods 0.000 claims abstract description 22
- 239000000779 smoke Substances 0.000 claims abstract description 9
- 238000005057 refrigeration Methods 0.000 claims abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 32
- 239000003546 flue gas Substances 0.000 claims description 32
- 239000000498 cooling water Substances 0.000 claims description 14
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 150000003839 salts Chemical class 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Drying Of Gases (AREA)
Abstract
The utility model provides a computer lab new trend cooling dehumidification desalination system of internal-combustion engine power waste heat drive, includes: the internal combustion engine power unit comprises a power output shaft; the internal combustion engine power generation unit comprises a power input shaft, and the power input shaft is in power connection with a power output shaft and is used for driving the internal combustion engine power generator unit to run; the absorption refrigerating unit utilizes the waste heat generated by the power unit of the internal combustion engine to prepare cold energy through absorption circulation; the absorption type dehumidification and desalination unit utilizes the smoke waste heat of the internal combustion engine power unit and the cylinder sleeve water waste heat as heat sources, and utilizes the cold energy prepared by the absorption type refrigeration unit as a cold source to cool, dehumidify and desalinate fresh air. The invention fully utilizes the waste heat generated by the power unit of the internal combustion engine in the power generation process of the internal combustion engine, and realizes the cooling, dehumidification and desalination of air by combining the absorption refrigerator with the absorption type dehumidification and desalination unit, thereby improving the energy utilization rate.
Description
Technical Field
The invention relates to the technical field of air conditioning fresh air treatment of a main workshop of an internal combustion engine generator, in particular to a fresh air cooling, dehumidifying and desalting system of a machine room driven by power waste heat of an internal combustion engine.
Background
On islands far from continents, power supply relies primarily on internal combustion engine generator sets. The internal combustion engine generator set is arranged in a main plant of the power station, and the main plant is the most important plant of the power station. In the generating set operation process, the equipment that generates heat in a large number such as internal-combustion engine body, generator and even intercooler is installed in the confined main building, makes the rising of temperature in the factory building very easily, and the high temperature can influence generating capacity of generating set in the main building, still can make generating set's control components and parts break down, influences generating set's normal operating. In addition, in the operation process of the internal combustion engine generator set, harmful gas generated by leakage of fuel, volatile engine oil and smoke in the main workshop can bring great harm to the health of operators on duty. Therefore, the ventilation of the main factory building can eliminate a large amount of waste heat in the main factory building, reduce the heat accumulated in the main factory building, meet the requirements of high load, long service life and pollution-free stable operation of the internal combustion engine generator set, reduce the concentration of harmful gas in the factory building for the ventilation of the main factory building, reduce the threat to the health of operators on duty, and provide a good working environment for the operators on duty, so that the ventilation of the main factory building becomes a necessary condition. At the same time, the main building ventilation also provides the air needed for combustion of the combustion engine fuel, if necessary.
At present, a forced air inlet measure is mainly adopted for cooling the main plant, and heat in the main plant is taken away through forced convection of outdoor air.
Due to the unique geographical location of islands in the sea, atmospheric relative humidity has been as high as 80% throughout the year, and due to the interaction of sea winds with sea water, the air contains a large amount of salt spray. The atmospheric environment with high temperature, high humidity and high salt content can accelerate the electrochemical corrosion of metal parts of equipment, so that key parts of the equipment, particularly contact moving parts such as a generator coil and the like which cannot be subjected to passive corrosion protection treatment, are corroded, a generator set is damaged, the operation and maintenance cost of the generator set is increased, and the power supply stability is influenced.
Therefore, for precise electronic parts such as control components of the generator set and the like, due to the fact that various metals are in contact connection and meanwhile corrosion prevention treatment cannot be carried out on the metal components, electrochemical corrosion is easy to occur in the high-temperature, high-humidity and high-salt-content atmospheric environment, operation failure of a control system is caused, and stable operation of the generator set system is further influenced.
Disclosure of Invention
Problem (A)
In summary, how to provide a fresh air cooling, dehumidifying and desalting system for a machine room driven by waste heat of power of an internal combustion engine to solve the technical problems of high temperature of the machine room, easy corrosion of a generator coil, low fuel utilization efficiency and the like in the conventional power generation system of the internal combustion engine becomes a problem to be solved urgently by the technical staff in the field.
(II) technical scheme
The invention provides a fresh air cooling, dehumidifying and desalting system of a machine room driven by power waste heat of an internal combustion engine.
This internal-combustion engine power waste heat driven computer lab new trend cooling dehumidification desalination system includes:
an internal combustion engine power unit including a power take-off shaft;
the internal combustion engine power generation unit comprises a power input shaft, and the power input shaft is in power connection with the power output shaft and is used for driving the internal combustion engine power generator unit to run;
the absorption refrigerating unit utilizes the waste heat generated by the internal combustion engine power unit to prepare cold energy through absorption circulation;
the absorption type dehumidification and desalination unit utilizes the flue gas waste heat and the cylinder sleeve water waste heat of the internal combustion engine power unit as heat sources, and utilizes the cold energy prepared by the absorption type refrigeration unit as a cold source to cool, dehumidify and desalinate fresh air.
Preferably, in the internal combustion engine power waste heat driven machine room fresh air cooling, dehumidifying and desalting system provided by the invention, the system further comprises: the waste heat utilization loop of the power unit comprises a flue gas utilization pipeline for conveying flue gas and a cylinder sleeve water utilization pipeline for conveying cylinder sleeve water; the cold energy utilization loop utilizes the cold energy generated by the absorption refrigerating unit to act on circulating cold water, part of the circulating cold water is used as a cold source and is sent into the absorption dehumidification desalination unit, and the other part of the circulating cold water is used for cooling the indoor air of the machine room; a cooling water circuit for providing circulating cooling water for the absorption chiller unit; and after the air supply loop obtains cooling, dehumidifying and desalting air supply by utilizing the absorption type dehumidifying and desalting unit, one part of the air supply loop is used for cooling the internal combustion engine power generation unit, and the other part of the air supply loop is used for burning air inlet of the internal combustion engine power unit.
Preferably, in the fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the power of the internal combustion engine provided by the invention, the waste heat utilization circuit of the power unit comprises: the medium loop, the flue gas utilization pipeline and the cylinder sleeve water utilization pipeline.
Preferably, in the fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the power of the internal combustion engine provided by the invention, the medium circuit sequentially comprises in the medium flowing direction: the smoke-water heat exchanger is connected with a smoke outlet of the absorption refrigerating unit and heats the medium by using low-temperature waste heat of smoke discharged by the power unit of the internal combustion engine; the water-water heat exchanger is connected with a cylinder sleeve water circulation pipeline of the internal combustion engine power unit and is used for heating the medium by utilizing the waste heat of the cylinder sleeve water of the internal combustion engine power unit; and the first circulating pump is used for providing power for the medium in the power unit waste heat utilization loop.
Preferably, in the fresh air cooling, dehumidifying and desalting system for the machine room driven by the power waste heat of the internal combustion engine provided by the invention, in the flue gas utilization pipeline, high-temperature flue gas discharged by the power unit of the internal combustion engine sequentially passes through the absorption refrigerating unit and the flue gas-water heat exchanger and then is discharged into the outdoor atmospheric environment.
Preferably, in the fresh air cooling, dehumidifying and desalting system for the machine room driven by the power waste heat of the internal combustion engine, the cylinder liner water is led out of the machine body through the cylinder liner water in the cylinder liner water utilization pipeline, and the cylinder liner water is cooled by heat released by the water-water heat exchanger and then returns to the power unit of the internal combustion engine.
Preferably, in the fresh air cooling, dehumidifying and desalting system for the machine room driven by the power waste heat of the internal combustion engine provided by the invention, the cylinder liner water utilization pipeline further comprises a fourth circulating pump for providing power for the circulation of the cylinder liner water of the power unit.
Preferably, in the fresh air cooling, dehumidifying and desalting system for the machine room driven by the power waste heat of the internal combustion engine provided by the invention, the cold energy utilization loop sequentially comprises the following components in the medium flowing direction: the third circulating pump is used for providing power for the medium in the cold energy utilization loop; a terminal cooler for reducing the indoor air temperature using the surplus cooling capacity.
Preferably, in the fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the power of the internal combustion engine provided by the invention, the cooling water circuit sequentially comprises in the medium flowing direction: a cooling tower for discharging the low temperature heat rejection of the absorption chiller unit to an outdoor atmospheric environment; and the second circulating pump is used for providing power for the circulation of the cooling water loop medium.
Preferably, in the fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the power of the internal combustion engine provided by the invention, the air supply loop passes through the air supply machine along the air supply flowing direction and then respectively enters the air inlet device of the power unit of the internal combustion engine and the power generation unit of the internal combustion engine.
(III) advantageous effects
(1) The internal combustion engine waste heat driving main workshop fresh air cooling, dehumidifying and desalting system provided by the invention fully utilizes waste heat generated by the internal combustion engine power unit in the power generation process of the internal combustion engine, and realizes cooling, dehumidifying and desalting of air through the absorption refrigerator combined absorption type dehumidifying and desalting unit, thereby improving the energy utilization rate;
(2) the fresh air cooling, dehumidifying and desalting system of the internal combustion engine waste heat driven main workshop can obtain low-temperature low-humidity low-salt-fog fresh air supply which can be used for cooling the power generation unit of the internal combustion engine, can effectively relieve local corrosion of parts such as a rotor and a coil caused by salt fog deposition, and improves the safe and stable operation of a unit;
(3) the internal combustion engine waste heat drives the fresh air cooling, dehumidifying and desalting system of the main workshop, the obtained low-temperature low-humidity low-salt fog air supply can also reduce the air inlet temperature required by combustion of the power unit of the internal combustion engine, and the output of the generator set of the internal combustion engine is improved;
(4) the internal combustion engine waste heat driven main workshop fresh air cooling, dehumidifying and desalting system provided by the invention has the advantages of reasonable system composition, simple fresh air treatment process flow, mature system composition technology and equipment and great popularization value.
Drawings
FIG. 1 is a schematic structural diagram of a fresh air cooling, dehumidifying and desalting system of a main power house driven by waste heat of an internal combustion engine in an embodiment of the invention.
In fig. 1, the correspondence between the component names and the reference numbers is:
the system comprises an internal combustion engine power unit 1, an internal combustion engine power generation unit 2, a flue gas utilization pipeline 3, a cylinder liner water utilization pipeline 4, a flue gas-water heat exchanger 5, a water-water heat exchanger 6, a first circulating pump 7, an absorption type refrigerating unit 8, a cooling tower 9, an absorption type dehumidifying and desalting unit 10, a second circulating pump 11, a blower 12, a tail end cooler 13, a third circulating pump 14 and a fourth circulating pump 15.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a fresh air cooling, dehumidifying and desalting system of a main power house driven by waste heat of an internal combustion engine according to an embodiment of the present invention.
The invention provides a fresh air cooling, dehumidifying and desalting system of a main factory building driven by waste heat of an internal combustion engine, which can fully utilize the waste heat generated by a power unit in the power generation process of the internal combustion engine and realize the cooling, dehumidifying and desalting of air by combining an absorption type dehumidifying and desalting unit with an absorption type refrigerating machine so as to achieve the purposes of reducing salt mist deposition of a generating set, reducing corrosion risk of equipment, reducing combustion air inlet temperature, improving output of the generating set and improving energy utilization rate.
In the invention, the internal combustion engine waste heat driven fresh air cooling, dehumidifying and desalting system of the main factory building comprises: the system comprises an internal combustion engine power unit 1, an internal combustion engine power generation unit 2, a flue gas utilization pipeline 3, a cylinder liner water utilization pipeline 4, a flue gas-water heat exchanger 5, a water-water heat exchanger 6, a first circulating pump 7, an absorption type refrigerating unit 8, a cooling tower 9, an absorption type dehumidifying and desalting unit 10, a second circulating pump 11, a blower 12, a tail end cooler 13, a third circulating pump 14, a fourth circulating pump 15, and pipelines and accessories for conveying gas or liquid.
Specifically, the internal combustion engine power unit outputs high-temperature flue gas and high-temperature cylinder water outwards through the flue gas utilization pipeline 3 and the cylinder water utilization pipeline 4. The flue gas utilization pipeline 3 is connected with the absorption refrigerating unit 8, and heat energy contained in high-temperature flue gas output by the flue gas utilization pipeline 3 can be used as energy for operation of the absorption refrigerating unit 8. The flue gas after being output by the absorption refrigerating unit 8 also has certain waste heat, the absorption refrigerating unit 8 is connected with the flue gas-water heat exchanger 5, and the flue gas is utilized again through the flue gas-water heat exchanger 5, so that the waste heat in the flue gas is absorbed to the maximum extent. The smoke-water heat exchanger 5 is connected with the water-water heat exchanger 6 through the first circulation pump 7, and can supply a certain amount of hot water to the water-water heat exchanger 6. The water-water heat exchanger 6 is connected with a cylinder sleeve of the internal combustion engine power unit 1, high-temperature cylinder sleeve water can be led out through the cylinder sleeve water by using the pipeline 4, and a large amount of hot water can be generated by using heat of the cylinder sleeve water through the water-water heat exchanger 6 and supplied to the absorption type dehumidification desalination unit 10 (the absorption type dehumidification desalination unit 10 is connected with the water-water heat exchanger 6 through a pipeline) for use. The absorption refrigerating unit 8 is connected with the tail end cooler 13 through the third circulating pump 14 to form a loop, so that cold flow distribution can be realized, and cold flow is provided for room temperature regulation. The absorption refrigerator group 8, the cooling tower 9, and the second circulation pump 11 can also form a cooling water circulation circuit. The absorption chiller unit 8 is connected to the absorption dehumidification desalination unit 10 and can supply cooling energy to the absorption dehumidification desalination unit 10. The absorption type dehumidification and desalination unit 10 is connected with two branches through a blower 12, one branch is connected with the internal combustion engine power unit 1, and the other branch is connected with the internal combustion engine power unit 2, so that clean cooling, dehumidification and desalination fresh air can be provided for the internal combustion engine power unit 1 and the internal combustion engine power unit 2.
As shown in FIG. 1, in the present invention, the internal combustion engine waste heat driven main plant fresh air cooling, dehumidifying and desalting system comprises:
1. power unit of internal combustion engine
The combustion of fuel is performed by the internal combustion engine power unit, thereby converting biomass energy into heat energy.
2. Power generation unit of internal combustion engine
The internal combustion engine power generation unit is provided with a power input shaft which is coaxially connected with a power output shaft of the internal combustion engine power unit, the internal combustion engine power unit drives the internal combustion engine power generation unit to run, and the internal combustion engine power generation unit converts kinetic energy into electric energy so as to generate and output the electric energy.
3. Absorption refrigerating unit
The absorption refrigeration unit utilizes the waste heat of the flue gas of the internal combustion engine power unit (the internal combustion engine power unit burns biomass, so that a large amount of heat energy can be generated to escape, such as the heat energy lost along with the flue gas) to prepare cold energy through absorption circulation.
4. Absorption type dehumidification desalination unit
The absorption type dehumidification desalination unit utilizes the flue gas waste heat of the internal combustion engine power unit and the cylinder sleeve water waste heat as heat sources, utilizes the cold energy prepared by the absorption type refrigeration unit as cold sources, cools the fresh air through absorption type circulation, and the water vapor in the fresh air is condensed into water drops, so that the dehumidification effect is achieved.
The treated air supply has two main application paths: 1. the cooling device is used for cooling the power generation unit of the internal combustion engine, and can reduce salt mist deposition of the rotor and the coil; 2. the cooling device is used for cooling combustion intake air and can improve the output of a generator set.
Through the structural design, the fresh air cooling, dehumidifying and desalting system of the internal combustion engine waste heat driven main workshop can achieve the following beneficial effects:
1. the internal combustion engine waste heat driving main workshop fresh air cooling, dehumidifying and desalting system provided by the invention fully utilizes waste heat generated by the internal combustion engine power unit in the power generation process of the internal combustion engine, and realizes cooling, dehumidifying and desalting of air through the absorption refrigerator combined absorption type dehumidifying and desalting unit, thereby improving the energy utilization rate;
2. the fresh air cooling, dehumidifying and desalting system of the internal combustion engine waste heat driven main workshop can obtain low-temperature low-humidity low-salt-fog fresh air supply which can be used for cooling the power generation unit of the internal combustion engine, can effectively relieve local corrosion of parts such as a rotor and a coil caused by salt fog deposition, and improves the safe and stable operation of a unit;
3. the internal combustion engine waste heat drives the fresh air cooling, dehumidifying and desalting system of the main workshop, the obtained low-temperature low-humidity low-salt fog air supply can also reduce the air inlet temperature required by combustion of the power unit of the internal combustion engine, and the output of the generator set of the internal combustion engine is improved;
4. the internal combustion engine waste heat driven main workshop fresh air cooling, dehumidifying and desalting system provided by the invention has the advantages of reasonable system composition, simple fresh air treatment process flow, mature system composition technology and equipment and great popularization value.
Based on the design concept, in one specific embodiment of the invention, the internal combustion engine waste heat driven main plant fresh air cooling, dehumidifying and desalting system further comprises an internal combustion engine power unit waste heat utilization loop. The waste heat utilization loop of the internal combustion engine power unit utilizes the waste heat of cylinder sleeve water of the internal combustion engine power unit and the low-temperature waste heat of flue gas to heat circulating water to generate high-temperature hot water, and then the high-temperature hot water is used as a heat source to be sent to the absorption type dehumidification and desalination unit.
Specifically, the internal combustion engine waste heat driven main workshop fresh air cooling, dehumidifying and desalting system further comprises a cold energy utilization loop, the cold energy utilization loop utilizes cold energy generated by the absorption type refrigerating unit to act on circulating cold water, part of the circulating cold water is used as a cold source and is sent into the absorption type dehumidifying and desalting unit, and part of the circulating cold water is used for cooling indoor air of the machine room.
Specifically, the fresh air cooling, dehumidifying and desalting system of the internal combustion engine driven by waste heat of the main plant further comprises a cooling water loop, and the cooling water loop is used for providing circulating cooling water for the absorption refrigerating unit.
Specifically, the internal combustion engine waste heat driven main power house fresh air cooling, dehumidifying and desalting system further comprises an air supply loop, after the air supply loop obtains cooling, dehumidifying, desalting and air supply by utilizing an absorption type dehumidifying and desalting unit, one part of the air supply loop is used for cooling an internal combustion engine power generation unit to avoid salt mist deposition, and the other part of the air supply loop is used for combustion air inlet cooling of an internal combustion engine power unit.
Further, the power unit waste heat utilization circuit includes: a medium loop, a flue gas utilization pipeline and a cylinder sleeve water utilization pipeline. The medium loop is used for recycling waste heat of the power unit of the internal combustion engine and is used as a driving heat source of the absorption type dehumidification desalination unit.
Wherein, the medium return circuit includes in proper order along the medium flow direction:
1. the smoke-water heat exchanger is connected with a smoke outlet of the absorption refrigerating unit and heats a medium by using low-temperature waste heat of smoke discharged by the power unit of the internal combustion engine;
2. the water-water heat exchanger is connected with a cylinder sleeve water circulation pipeline of the internal combustion engine power unit and heats a medium by utilizing the waste heat of the cylinder sleeve water of the internal combustion engine power unit;
3. and the first circulating pump is used for providing power for the medium in the power unit waste heat utilization loop.
High-temperature flue gas exhausted by the power unit of the internal combustion engine sequentially passes through the absorption refrigerating unit and the flue gas-water heat exchanger and then is exhausted into the outdoor atmospheric environment.
In the cylinder liner water utilization pipeline, the heat dissipated by the power unit of the internal combustion engine is carried out of the engine body through the cylinder liner water, and is returned to the power unit of the internal combustion engine after being released and cooled through the water-water heat exchanger. Specifically, the cylinder liner water utilization pipeline further comprises a fourth circulating pump used for providing power for the circulation of the cylinder liner water of the power unit.
In the invention, the cold energy utilization loop sequentially comprises the following components in the flowing direction of the medium:
1. the third circulating pump is used for providing power for the medium in the cold energy utilization loop;
2. and the tail end cooler is used for reducing the indoor air temperature by utilizing the redundant cold energy.
In the present invention, the cooling water circuit includes, in order in the medium flow direction:
1. the cooling tower is used for discharging low-temperature heat discharge of the absorption refrigerating unit to an outdoor atmospheric environment;
2. and the second circulating pump is used for providing power for the circulation of the cooling water loop medium.
The air supply loop passes through the air supply machine along the air supply flowing direction and then respectively enters the air inlet device of the internal combustion engine power unit and the internal combustion engine power generation unit. From the above description, those skilled in the art should clearly recognize that the internal combustion engine waste heat driving main plant fresh air temperature reduction, dehumidification and desalination system provided by the embodiment of the present invention.
The effectiveness of the internal combustion engine waste heat driven main plant fresh air cooling, dehumidifying and desalting system provided by the invention is verified by a specific embodiment, wherein:
selecting a model CAT3512 diesel internal combustion engine, wherein the rated working condition parameters are as follows: the heat value of fuel input by the internal combustion engine is 2656kW, the rated power generation is 1020kW, the heat of the flue gas is 1016kW when the temperature of the flue gas is reduced to 25 ℃, the heat can be recovered 537kW when the temperature of the flue gas is reduced to 177 ℃, and the heat of cylinder sleeve water is 616 kW; the heat dissipation capacity of the fuselage radiation is 115kW, and the heat dissipation capacity of the generator is 62 kW.
The refrigerator is selected as an absorption refrigerator, a high-temperature section of flue gas (the exhaust gas temperature of an internal combustion engine reaches 177 ℃) is used as a driving heat source, the coefficient of performance COP is 1.4, and the corresponding refrigerating capacity is 752 kW.
Selecting a dehumidification and desalination all-in-one machine, wherein the air handling capacity is 100m3/min, the inlet fresh air parameters are 30 ℃, 90% RH, the air supply parameters are 18 ℃, 55% RH, the dehumidification power is 110kW, the heat consumption is 226kW, and the cold consumption is 122 kW.
And selecting a plate heat exchanger for recovering the water heat of the cylinder sleeve, wherein the heat exchange amount is 616 kW.
And selecting a smoke-water heat exchanger for recovering waste heat of the discharged smoke, wherein the heat exchange quantity is 96 kW.
In conclusion, the system input heat is 2656kW, the power generation capacity is 1020kW, the dehumidification power is 110kW, the net output cold is 630kW, the net output heat is 486kW, and the comprehensive energy utilization rate is 84.56%.
Through the process, the internal combustion engine waste heat provided by the invention drives the main factory fresh air cooling, dehumidifying and desalting system to fully utilize the waste heat of the power unit in the power generation process of the internal combustion engine, and the cooling, dehumidifying and desalting of air are realized through the absorption refrigerator combined with the absorption dehumidifying and desalting unit, so that the purposes of reducing salt mist deposition of the generator set, reducing corrosion risk, reducing combustion air inlet temperature, improving output of the generator set and improving energy utilization rate are achieved.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. The utility model provides a computer lab new trend cooling dehumidification desalination system of internal-combustion engine power waste heat drive, includes:
an internal combustion engine power unit (1) comprising a power take-off shaft;
the internal combustion engine power generation unit (2) comprises a power input shaft, and the power input shaft is in power connection with the power output shaft and is used for driving the internal combustion engine power generator unit to run;
the absorption refrigerating unit (8) utilizes the waste heat generated by the internal combustion engine power unit to prepare cold energy through absorption circulation;
the absorption type dehumidification and desalination unit (10) utilizes the flue gas waste heat of the internal combustion engine power unit and the cylinder sleeve water waste heat as heat sources, and utilizes the cold energy prepared by the absorption type refrigeration unit as a cold source to cool, dehumidify and desalinate fresh air.
2. The internal combustion engine power waste heat driven machine room fresh air cooling, dehumidifying and desalting system according to claim 1, further comprising:
the waste heat utilization system comprises a power unit waste heat utilization loop, a waste heat utilization loop and a waste heat recovery system, wherein the power unit waste heat utilization loop comprises a flue gas utilization pipeline (3) for conveying flue gas and a cylinder liner water utilization pipeline (4) for conveying cylinder liner water;
the cold energy utilization loop utilizes the cold energy generated by the absorption refrigerating unit to act on circulating cold water, part of the circulating cold water is used as a cold source and is sent into the absorption dehumidification desalination unit, and the other part of the circulating cold water is used for cooling the indoor air of the machine room;
a cooling water circuit for providing circulating cooling water for the absorption chiller unit;
and after the air supply loop obtains cooling, dehumidifying and desalting air supply by utilizing the absorption type dehumidifying and desalting unit, one part of the air supply loop is used for cooling the internal combustion engine power generation unit, and the other part of the air supply loop is used for burning air inlet of the internal combustion engine power unit.
3. The fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the internal combustion engine power as claimed in claim 2,
the power unit waste heat utilization circuit includes: a medium loop, the flue gas utilization pipeline (3) and the cylinder liner water utilization pipeline (4).
4. The fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the internal combustion engine power as claimed in claim 3,
the medium loop comprises in sequence along the medium flow direction:
the smoke-water heat exchanger (5) is connected with a smoke outlet of the absorption refrigerating unit and heats the medium by using low-temperature waste heat of smoke discharged by the internal combustion engine power unit;
the water-water heat exchanger (6) is connected with a cylinder liner water circulation pipeline of the internal combustion engine power unit and is used for heating the medium by utilizing the waste heat of the cylinder liner water of the internal combustion engine power unit;
and the first circulating pump (7) is used for providing power for the medium in the power unit waste heat utilization loop.
5. The fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the internal combustion engine power as claimed in claim 4,
in the flue gas utilization pipeline, high-temperature flue gas discharged by the power unit of the internal combustion engine sequentially passes through the absorption refrigerating unit and the flue gas-water heat exchanger and then is discharged into the outdoor atmospheric environment.
6. The fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the internal combustion engine power as claimed in claim 4,
in the cylinder liner water utilization pipeline, the heat dissipated by the internal combustion engine power unit is led out of the engine body through the cylinder liner water, and is returned to the internal combustion engine power unit after being released and cooled through the water-water heat exchanger.
7. The fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the internal combustion engine power as claimed in claim 6,
the cylinder liner water utilization pipeline also comprises a fourth circulating pump (15) which is used for providing power for the circulation of the cylinder liner water of the power unit.
8. The fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the internal combustion engine power as claimed in claim 2,
the cold energy utilization loop sequentially comprises the following components in the flowing direction of the medium:
a third circulation pump (14) for powering the medium in the cold energy utilisation circuit;
an end cooler (13) for reducing the indoor air temperature using the excess cold.
9. The fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the internal combustion engine power as claimed in claim 2,
the cooling water loop comprises the following components in sequence along the flowing direction of the medium:
a cooling tower (9) for discharging the absorption chiller unit low temperature heat rejection to an outdoor atmospheric environment;
and the second circulating pump (11) is used for providing power for the circulation of the cooling water loop medium.
10. The fresh air cooling, dehumidifying and desalting system for the machine room driven by the waste heat of the internal combustion engine power as claimed in claim 2,
the air supply loop passes through an air supply machine (12) along the air supply flowing direction and then respectively enters the air inlet device of the internal combustion engine power unit and the internal combustion engine power generation unit.
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