CN114856723A - Distributed energy supply method and system based on temperature and humidity independent control - Google Patents
Distributed energy supply method and system based on temperature and humidity independent control Download PDFInfo
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- CN114856723A CN114856723A CN202210467645.0A CN202210467645A CN114856723A CN 114856723 A CN114856723 A CN 114856723A CN 202210467645 A CN202210467645 A CN 202210467645A CN 114856723 A CN114856723 A CN 114856723A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000002918 waste heat Substances 0.000 claims abstract description 25
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003546 flue gas Substances 0.000 claims abstract description 16
- 238000010248 power generation Methods 0.000 claims abstract description 13
- 230000001172 regenerating effect Effects 0.000 claims abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 90
- 238000007791 dehumidification Methods 0.000 claims description 50
- 230000008929 regeneration Effects 0.000 claims description 32
- 238000011069 regeneration method Methods 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 31
- 238000010521 absorption reaction Methods 0.000 claims description 16
- 239000000779 smoke Substances 0.000 claims description 8
- 238000000855 fermentation Methods 0.000 claims description 4
- 230000004151 fermentation Effects 0.000 claims description 4
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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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
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
-
- 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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a distributed energy supply method and a distributed energy supply system based on temperature and humidity independent control, which comprises the following steps of: s1, introducing the biogas into an internal combustion engine to burn and generate power, wherein the flue gas waste heat generated by power generation provides a working heat source for a refrigerator; s2, dehumidifying the fresh air entering the refrigerator by using the dehumidifying solution to form a dilute solution, and externally supplying cold by using the refrigerator; s3, concentrating and regenerating the dilute solution to form a concentrated solution which is used as the dehumidifying solution in S2 for repeated use, wherein heat required by concentrating and regenerating the dilute solution is exchanged with cylinder water of the internal combustion engine, and the cylinder water returns to the internal combustion engine after releasing heat to realize a heat charging-heat releasing cycle; compared with the traditional mode, the distributed energy supply system based on temperature and humidity independent control is realized, the utilization of the waste heat of power generation is more reasonable in the new scheme, the waste heat of different grades is used for meeting the elimination requirements of different loads, and the thermodynamic economy of the distributed energy supply system is further improved.
Description
Technical Field
The invention relates to the technical field of waste heat utilization, in particular to a distributed energy supply method and system based on temperature and humidity independent control.
Background
Most distributed energy supply systems use natural gas as a main fuel, but as the demand for natural gas rises, the price of the distributed energy supply systems is higher. On the other hand, in 2015, methane replaces fossil energy of about 1100 million tons of standard coal, the global annual output reaches 590 billions of cubic meters, and therefore the methane replaces natural gas as a main energy source of a distributed energy supply system with the characteristics of large total amount, lower price and easy availability. The internal combustion engine is a good choice for the methane combustion power generation prime motor due to the characteristics of stability, low initial investment and the like, and the waste heat of the smoke generated by methane combustion power generation in the internal combustion engine is also a resource which can be utilized.
The absorption chiller is usually used as one of the key devices for waste heat utilization in the distributed energy supply system, and its coefficient of performance (COP) is also called the coefficient of performance of refrigeration, which is the refrigeration capacity that can be obtained per unit power consumption, and is an important technical and economic indicator of the chiller. The refrigerating performance coefficient is large, and the energy utilization efficiency of the refrigerating machine is high. In order to effectively improve the COP of the absorption refrigerator, people mostly adopt a temperature and humidity independent control technology, firstly, humidity control is realized through a dehumidification technology, and then temperature control is realized through a cooling technology, so that the problem of cold and heat offset of the traditional air conditioner is solved. The surface cooling type dehumidification is the main method for air dehumidification at present, and has the defects that the power consumption is huge in the compression type refrigeration process, the requirement on the grade of a heat source is not high (not more than 80 ℃) based on the solution dehumidification technology driven by heat, and the power consumption can be effectively reduced.
Therefore, the problem to be solved at present is to find a temperature and humidity independent control distributed energy supply method comprehensively considering system economy and efficient waste heat utilization.
Disclosure of Invention
Therefore, the invention provides a distributed energy supply method and system based on temperature and humidity independent control to solve the problems, compared with the traditional mode, the scheme has the advantages that the utilization of the waste heat of power generation is more reasonable, the waste heat of different grades is used for meeting the elimination requirements of different loads, and the thermodynamic economy of the distributed energy supply system is further improved.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a distributed energy supply method based on temperature and humidity independent control comprises the following steps:
s1, introducing the biogas into an internal combustion engine to burn and generate power, wherein the flue gas waste heat generated by power generation provides a working heat source for a refrigerator;
s2, dehumidifying the fresh air entering the refrigerator by using the dehumidifying solution to form a dilute solution, and externally supplying cold by using the refrigerator;
and S3, concentrating and regenerating the dilute solution to form a concentrated solution which is used as the dehumidifying solution in S2 for repeated use, wherein heat required by concentrating and regenerating the dilute solution is exchanged with cylinder water of the internal combustion engine, and the cylinder water returns to the internal combustion engine after releasing heat to realize a heat charging-heat releasing cycle.
Further, the concentrated solution carrying heat formed in the S3 through the concentration regeneration exchanges heat with the dilute solution formed in the S2, so that the dilute solution is preheated.
Further, the method also comprises S4, and the flue gas waste heat generated by power generation enters the methane tank through the refrigerator to provide heat for fermentation of the methane tank.
The invention also provides a distributed energy supply system based on temperature and humidity independent control, which comprises an internal combustion engine, a refrigerator, a dehumidification tower, a first heat exchanger, a second heat exchanger, a regeneration tower and a cooler, wherein the internal combustion engine is provided with a methane inlet, an air inlet, a cylinder sleeve water inlet and a cylinder sleeve water outlet which are respectively used for connecting a methane pipeline and an air pipeline, methane is combusted in the internal combustion engine to generate electricity, and a smoke outlet of the internal combustion engine is connected with a smoke inlet of the refrigerator to provide a heat source for the refrigerator; the dehumidification tower is provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet, the air inlet of the dehumidification tower is connected with a fresh air input pipeline, the air outlet of the dehumidification tower is connected with a refrigerator, a dehumidification solution is sprayed in the dehumidification tower to dehumidify fresh air entering the refrigerator, the liquid outlet of the dehumidification tower is connected with a cold side inlet of a second heat exchanger, the cold side outlet of the second heat exchanger is connected with a cold side inlet of a first heat exchanger, the cold side outlet of the first heat exchanger is connected with a liquid inlet of a regeneration tower, the dehumidification solution absorbs water vapor to form a dilute solution, the dilute solution flows out of the dehumidification tower, enters the second heat exchanger to be preheated, then enters the first heat exchanger to be heated, a hot side inlet of the first heat exchanger is connected with a cylinder sleeve water outlet of the internal combustion engine, and a hot side outlet is connected with a cylinder sleeve water inlet of the internal combustion engine, so that the cylinder sleeve water heating-heat releasing cycle is realized; the heated dilute solution enters a regeneration tower, the regeneration tower is provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet, the air inlet of the regeneration tower is connected with an air supply pipeline, the air outlet of the regeneration tower is connected with an air outlet pipeline, the dilute solution and air in the regeneration tower are subjected to damp-heat exchange to form a concentrated solution, the concentrated solution flows out from the liquid outlet of the regeneration tower, the liquid outlet of the regeneration tower is connected with the hot side inlet of a second heat exchanger, the hot side outlet of the second heat exchanger is connected with a cooler, the cooler is connected with the liquid inlet of a dehumidification tower, and the cooled concentrated solution is reused as the dehumidification solution in the dehumidification tower.
Furthermore, the device also comprises a methane tank, wherein the inlet of the methane tank is connected with the air outlet of the refrigerator, and the outlet of the methane tank is connected with a methane discharge pipeline.
Furthermore, the system also comprises a dilute solution tank and a concentrated solution tank, wherein the inlet of the dilute solution tank is connected with the liquid outlet of the dehumidification tower, the outlet of the dilute solution tank is connected with the cold side inlet of the second heat exchanger, the inlet of the concentrated solution tank is connected with the liquid outlet of the regeneration tower, and the outlet of the concentrated solution tank is connected with the hot side inlet of the second heat exchanger.
Furthermore, the refrigerator is a single-effect absorption refrigerator, and the first heat exchanger and the second heat exchanger are liquid-liquid heat exchangers.
In the scheme, the internal combustion engine is a combustion reaction place, the combustion reaction of methane in the methane and other possible reactions occur inside the internal combustion engine, and a large amount of smoke and heat are generated. The first heat exchanger, the second heat exchanger and the cooler are heat exchange devices, in which a hot fluid exchanges heat with a cold fluid. The dehumidification tower is a dehumidification device, and heat and moisture exchange is carried out between the dehumidification tower and humid air by utilizing the characteristics of difficult crystallization, high stability and high water absorption of a dehumidification solution, so as to absorb moisture in the air. The regeneration tower is a device for providing a place for the concentration and regeneration of the dehumidified dilute solution, and the air and the dehumidified dilute solution perform heat and humidity exchange to absorb moisture in the dehumidified dilute solution. The single-effect absorption refrigerator is a device for achieving the purpose of refrigeration by utilizing the evaporation of low-boiling-point components, and a driving heat source is directly utilized once in a unit. The methane tank is a device for producing methane by fermenting and decomposing various organic matters through microorganisms under proper temperature, humidity, pH value and anaerobic condition, and provides required conditions for methane production. The dilute solution tank and the concentrated solution tank are collecting devices, and the spraying solution can be collected in the tanks.
Through the technical scheme provided by the invention, the method has the following beneficial effects:
1. the scheme realizes distributed energy supply, and the internal combustion engine can provide a working heat source for the refrigerator while supplying power to the outside, so that the refrigerator supplies cold to the outside.
2. The COP of the refrigerator is greatly improved: compare with traditional refrigerator, this scheme makes air moisture decline through solution dehumidification unit earlier, and the rethread refrigerator cooling for refrigerator refrigeration temperature promotes to some extent, reduces irreversible loss, has avoided the problem that the cold and hot offset, has effectively improved refrigerator COP.
3. The scheme adopts a solution dehumidification technology based on thermal drive, has low requirement on the grade of a heat source (not more than 80 ℃), and adopts the waste heat of the system to regenerate and reuse the dehumidification solution, thereby saving the cost.
4. The reasonable utilization of the waste heat of different grades is realized: the waste heat of high-temperature flue gas generated by methane combustion and power generation in the internal combustion engine is used as a working heat source of the absorption refrigerator, and meanwhile, the flue gas generated by the absorption refrigerator can be further used for heat preservation of the methane tank; the waste heat generated by the internal combustion engine is the waste heat of the cylinder liner water besides the waste heat of the smoke, and the solution dehumidifying unit has low requirement on the temperature of a heat source, so the solution dehumidifying unit is driven by the cylinder liner water of the internal combustion engine with low temperature. In conclusion, the scheme realizes reasonable utilization of waste heat of different grades, and avoids waste of waste heat grade.
Drawings
Fig. 1 is a schematic structural diagram of a distributed energy supply system based on temperature and humidity independent control according to an embodiment of the present invention.
Detailed Description
To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A distributed energy supply method based on temperature and humidity independent control comprises the following steps:
s1, introducing the biogas into an internal combustion engine to burn and generate power, wherein the flue gas waste heat generated by power generation provides a working heat source for a refrigerator;
s2, dehumidifying the fresh air entering the refrigerator by using the dehumidifying solution to form a dilute solution, and externally supplying cold by using the refrigerator;
s3, concentrating and regenerating the dilute solution to form a concentrated solution which is used as the dehumidifying solution in S2 for repeated use, wherein heat required by concentrating and regenerating the dilute solution is exchanged with cylinder water of the internal combustion engine, and the cylinder water returns to the internal combustion engine after releasing heat to realize a heat charging-heat releasing cycle; wherein, the concentrated solution carrying heat formed by the concentration and regeneration exchanges heat with the dilute solution formed by the S2, so that the dilute solution is preheated.
S4, the flue gas waste heat generated by power generation enters the methane tank through the refrigerator to provide heat for methane tank fermentation.
As shown in fig. 1, a distributed energy supply system based on temperature and humidity independent control includes an internal combustion engine 1, a single-effect absorption refrigerator 2, a methane tank 3, a first heat exchanger 4, a first hydraulic pump 5, a regeneration tower 6, a concentrated solution tank 7, a second hydraulic pump 8, a second heat exchanger 9, a dilute solution tank 10, a third hydraulic pump 11, a liquid cooler 12, a dehumidification tower 13, a methane input pipeline 14, an air input pipeline 15, an internal combustion engine exhaust pipeline 16, a smoke exhaust pipeline 17, a methane exhaust pipeline 18, an internal combustion engine cylinder liner water pipeline 19, a dilute solution pipeline 20, a concentrated solution pipeline 21, a first fresh air input pipeline 22, a dehumidification fresh air output pipeline 23, a second fresh air input pipeline 24, and a humidification fresh air output pipeline 25.
The internal combustion engine 1 is provided with a methane inlet, an air inlet, a cylinder sleeve water inlet and a cylinder sleeve water outlet, the methane inlet is connected with a methane input pipeline 14, the air inlet is connected with an air input pipeline 15, the cylinder sleeve water outlet is connected with the hot side of the first heat exchanger 4 through an internal combustion engine cylinder sleeve water pipeline 19, the hot side outlet of the first heat exchanger 4 is connected with the inlet of the first hydraulic pump 5, and the outlet of the first hydraulic pump 5 is connected with the cylinder sleeve water inlet;
the flue gas outlet of the single-effect absorption refrigerator 2 is connected with a flue gas discharge pipeline 17, the flue gas discharge pipeline 17 is bent or spirally arranged to pass through the methane tank 3 and then is discharged to the outside, the flue gas outlet of the internal combustion engine 1 is connected with the flue gas inlet of the single-effect absorption refrigerator 2 through an internal combustion engine exhaust pipeline 16, and the methane outlet of the methane tank 3 is connected with a methane discharge pipeline 18; in the present embodiment, the biogas discharge pipe 18 is connected to the biogas input pipe 14, and the biogas digester 3 is used as a fuel source of the internal combustion engine 1;
the dehumidification tower 3 is provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet, the air inlet of the dehumidification tower 3 is connected with a fresh air input pipeline 22, the air outlet of the dehumidification tower 3 is connected with the single-effect absorption refrigerator 2 through a dehumidification fresh air output pipeline 23, the liquid outlet of the dehumidification tower 3 is connected with a dilute solution tank 10, the outlet of the dilute solution tank 10 is connected with a dilute solution pipeline 20, and the dilute solution pipeline 20 passes through the second heat exchanger 9 and is communicated with the cold side thereof;
regenerator 6 is equipped with into the wind gap, the air outlet, inlet and liquid outlet, regenerator 6 goes into the wind gap and connects second new trend input pipeline 24, moist new trend output pipeline 25 is connected to regenerator 6 air outlet, dilute solution pipeline 20 and second hydraulic pump 8 are connected to regenerator 6 inlet, dilute solution pipeline 20 passes 4 cold sides of first heat exchanger, regenerator 6 liquid outlet passes through concentrated solution pipeline 21 and is connected with concentrated solution groove 7 and third hydraulic pump 11, concentrated solution pipeline 21 passes 9 hot sides of second heat exchanger and liquid cooler 12 in proper order, and link to each other with dehumidification tower 13 inlet.
The specific process flow is as follows:
s1, introducing biogas into the internal combustion engine 1 to combust and generate power to generate flue gas waste heat to provide a working heat source for the single-effect absorption refrigerator 2;
and S2, introducing fresh air into the dehumidification tower 13 for preliminary dehumidification, and introducing the fresh air into the single-effect absorption refrigerator 2 for cooling. The dehumidifying solution is sprayed in the dehumidifying tower 13, heat and humidity exchange is carried out between the dehumidifying solution and the introduced fresh air, under the driving of the water vapor pressure difference, the water vapor in the fresh air enters the dehumidifying solution, and dilute solution formed after dehumidification is collected in the dilute solution tank 10;
s3, preheating the dilute solution from the dilute solution tank 10 through a second heat exchanger 9, entering a first heat exchanger 4 through a second hydraulic pump 8 to exchange heat with cylinder jacket water of the internal combustion engine 1, and then entering a regeneration tower 6, wherein the partial pressure of the water vapor on the surface of the dilute solution after heat exchange is increased, and when the partial pressure of the water vapor on the surface of the dilute solution is higher than the partial pressure of the water vapor in the air in the regeneration tower, the water vapor on the surface of the dilute solution is transferred to the air, and the concentrated regeneration process of the dehumidifying solution is completed to form a concentrated solution; the concentrated solution flowing out of the regeneration tower 6 enters a second heat exchanger 9 to exchange heat with the dilute solution formed in the S2, then enters a liquid cooler 12 through a third hydraulic pump 11 to be cooled, and finally is conveyed back to a dehumidification tower 13 to complete a cycle; the cylinder liner water of the internal combustion engine 1 after heat exchange in the first heat exchanger 4 reenters the internal combustion engine 1 to be used as cooling water to complete a heat charging-heat discharging cycle;
s4, the waste heat of the flue gas generated by combustion power generation of the internal combustion engine 1 provides a working heat source for the single-effect absorption refrigerator 2 and then enters the methane tank 3 to provide heat for fermentation of the methane tank 3.
The invention provides a distributed energy supply method and a distributed energy supply system based on temperature and humidity independent control, and the root reason for realizing the temperature and humidity independent control is as follows: the dehumidification tower and the regeneration tower firstly bear latent heat load of fresh air, and the single-effect absorption refrigerator bears sensible heat load of the fresh air again, so that independent temperature and humidity control is achieved.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A distributed energy supply method based on temperature and humidity independent control is characterized by comprising the following steps:
s1, introducing the biogas into an internal combustion engine to burn and generate power, wherein the flue gas waste heat generated by power generation provides a working heat source for a refrigerator;
s2, dehumidifying the fresh air entering the refrigerator by using the dehumidifying solution to form a dilute solution, and externally supplying cold by using the refrigerator;
and S3, concentrating and regenerating the dilute solution to form a concentrated solution which is used as the dehumidifying solution in S2 for repeated use, wherein heat required by concentrating and regenerating the dilute solution is exchanged with cylinder water of the internal combustion engine, and the cylinder water returns to the internal combustion engine after releasing heat to realize a heat charging-heat releasing cycle.
2. The distributed energy supply method based on temperature and humidity independent control according to claim 1, characterized in that: the concentrated solution carrying heat formed in the S3 through the concentration and regeneration exchanges heat with the dilute solution formed in the S2, so that the dilute solution is preheated.
3. The distributed energy supply method based on temperature and humidity independent control according to claim 1, characterized in that: and the method also comprises S4, wherein the flue gas waste heat generated by power generation enters the methane tank through the refrigerator to provide heat for the methane tank for fermentation.
4. A system for implementing the distributed energy supply method based on temperature and humidity independent control according to claim 1, wherein: the system comprises an internal combustion engine, a refrigerator, a dehumidification tower, a first heat exchanger, a second heat exchanger, a regeneration tower and a cooler, wherein the internal combustion engine is provided with a methane inlet, an air inlet, a cylinder sleeve water inlet and a cylinder sleeve water outlet which are respectively used for connecting a methane pipeline and an air pipeline, methane is combusted in the internal combustion engine to generate power, and a smoke outlet of the internal combustion engine is connected with a smoke inlet of the refrigerator to provide a heat source for the refrigerator; the dehumidification tower is provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet, the air inlet of the dehumidification tower is connected with a fresh air input pipeline, the air outlet of the dehumidification tower is connected with a refrigerator, a dehumidification solution is sprayed in the dehumidification tower to dehumidify fresh air entering the refrigerator, the liquid outlet of the dehumidification tower is connected with a cold side inlet of a second heat exchanger, the cold side outlet of the second heat exchanger is connected with a cold side inlet of a first heat exchanger, the cold side outlet of the first heat exchanger is connected with a liquid inlet of a regeneration tower, the dehumidification solution absorbs water vapor to form a dilute solution, the dilute solution flows out of the dehumidification tower, enters the second heat exchanger to be preheated, then enters the first heat exchanger to be heated, a hot side inlet of the first heat exchanger is connected with a cylinder sleeve water outlet of the internal combustion engine, and a hot side outlet is connected with a cylinder sleeve water inlet of the internal combustion engine, so that the cylinder sleeve water heating-heat releasing cycle is realized; the heated dilute solution enters a regeneration tower, the regeneration tower is provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet, the air inlet of the regeneration tower is connected with an air supply pipeline, the air outlet of the regeneration tower is connected with an air outlet pipeline, the dilute solution and air in the regeneration tower are subjected to damp-heat exchange to form a concentrated solution, the concentrated solution flows out from the liquid outlet of the regeneration tower, the liquid outlet of the regeneration tower is connected with the hot side inlet of a second heat exchanger, the hot side outlet of the second heat exchanger is connected with a cooler, the cooler is connected with the liquid inlet of a dehumidification tower, and the cooled concentrated solution is reused as the dehumidification solution in the dehumidification tower.
5. The distributed energy supply system based on temperature and humidity independent control according to claim 4, wherein: the methane tank inlet is connected with the air outlet of the refrigerator, and the methane tank outlet is connected with a methane discharge pipeline.
6. The distributed energy supply system based on temperature and humidity independent control according to claim 4, wherein: the system comprises a first heat exchanger, a second heat exchanger, a regeneration tower, a dilute solution tank, a concentrated solution tank, a first heat exchanger and a second heat exchanger, and is characterized by further comprising a dilute solution tank and a concentrated solution tank, wherein an inlet of the dilute solution tank is connected with a liquid outlet of the dehumidification tower, an outlet of the dilute solution tank is connected with a cold side inlet of the second heat exchanger, an inlet of the concentrated solution tank is connected with a liquid outlet of the regeneration tower, and an outlet of the concentrated solution tank is connected with a hot side inlet of the second heat exchanger.
7. The distributed energy supply system based on temperature and humidity independent control according to claim 4, wherein: the refrigerator is a single-effect absorption refrigerator.
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