CN115420033A - Heat management system and adsorption bed refrigeration equipment - Google Patents
Heat management system and adsorption bed refrigeration equipment Download PDFInfo
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- CN115420033A CN115420033A CN202211041025.7A CN202211041025A CN115420033A CN 115420033 A CN115420033 A CN 115420033A CN 202211041025 A CN202211041025 A CN 202211041025A CN 115420033 A CN115420033 A CN 115420033A
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 212
- 238000005057 refrigeration Methods 0.000 title claims abstract description 58
- 239000003463 adsorbent Substances 0.000 claims description 24
- 238000003795 desorption Methods 0.000 claims description 17
- 239000003507 refrigerant Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 239000002918 waste heat Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000002156 adsorbate Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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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
- F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type
- F25B17/08—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type the absorbent or adsorbent being a solid, e.g. salt
- F25B17/086—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type the absorbent or adsorbent being a solid, e.g. salt with two or more boiler-sorber/evaporator units
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/28—Disposition of valves, e.g. of on-off valves or flow control valves specially adapted for sorption cycles
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
A heat management system and adsorption bed refrigeration equipment are used for meeting refrigeration requirements and achieving continuous refrigeration under different working conditions. The thermal management system is connected with first adsorption bed and second adsorption bed respectively, includes: first stop valve, second stop valve, third stop valve, fourth stop valve, compressor, condenser, evaporimeter and choke valve, wherein: the condenser comprises a first port and a second port, the first port is connected with an outlet of the first adsorption bed through a first stop valve and is connected with an outlet of the compressor, and the second port is connected with an outlet of the second adsorption bed through a second stop valve and is connected with an eighth port of the evaporator through a throttle valve; the evaporator comprises a fifth port, a sixth port, a seventh port and an eighth port, the fifth port is connected with the inlet of the first adsorption bed through a third stop valve, the sixth port is connected with the inlet of the second adsorption bed through a fourth stop valve, and the seventh port is connected with the inlet of the compressor.
Description
Technical Field
The application relates to the technical field of solid adsorption refrigeration, in particular to a heat management system and adsorption bed refrigeration equipment.
Background
The adsorption refrigeration technology is to utilize the adsorption effect to make the liquid decompress and evaporate so as to realize the refrigeration effect. At different temperatures, the adsorbents have different adsorption rates on the adsorbents, and the adsorbents are periodically heated and cooled to alternately desorb and adsorb the adsorbate gas, so that the refrigeration effect is obtained by utilizing the adsorption effect.
However, in the conventional adsorption refrigeration device, when the ambient temperature is high, the heat source temperature is low, or no heat source is used, the adsorption refrigeration device cannot perform continuous refrigeration, and therefore a novel adsorption refrigeration device is demanded to perform continuous refrigeration when the ambient temperature is low, the heat source temperature is low, and the working environment temperature is too high.
Disclosure of Invention
The application provides a heat management system and adsorption bed refrigeration plant for under the operating mode of difference, satisfy the refrigeration demand, realize continuously refrigerating.
In a first aspect, the application provides a thermal management system, which can be connected to a first adsorption bed and a second adsorption bed respectively, and can perform continuous refrigeration by using waste heat generated in the periodic adsorption and desorption processes of the first adsorption bed and the second adsorption bed, so as to meet the refrigeration requirement. Specifically, the thermal management system may include a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a compressor, a condenser, an evaporator, and a throttle. The condenser comprises a first port and a second port, the first port is connected with an outlet of the first adsorption bed through a first stop valve and is connected with an outlet of the compressor, the second port is connected with an outlet of the second adsorption bed through a second stop valve and is connected with an eighth port of the evaporator through a throttle valve; the evaporator comprises a fifth port, a sixth port, a seventh port and a ninth port, the third port is connected with the inlet of the first adsorption bed through a third stop valve, the four ports are connected with the inlet of the second adsorption bed through a fourth stop valve, and the fifth port is connected with the inlet of the compressor.
In the above scheme, when the adsorption bed is in a high-temperature working condition or the temperature of the heat source received by the adsorption bed is too high, the high-pressure medium output by the compressor and the high-temperature medium output by the first stop valve can exchange heat with the condenser and the evaporator respectively, so that cold compensation of the compressor is realized, and refrigeration which can be continued by the heat management system is ensured. In addition, the states of a plurality of stop valves in the thermal management system can be adjusted according to the working condition of thermal management and the temperature of the medium flowing through the current thermal management system, so that the refrigeration requirement of the thermal management system is adjusted, and the refrigeration requirements under various working conditions are met.
In one possible implementation, the thermal management system further includes a fifth cut-off valve, and the seventh port of the evaporator is connected to the inlet of the compressor through the fifth cut-off valve. According to the scheme, the connection between the compressor and the evaporator can be controlled through the opening and closing of the fifth stop valve, and the connection between the compressor and the condenser can be controlled, so that the heat management system can control the compressor to perform cold compensation by controlling the opening of the fifth stop valve, and continuous refrigeration under a high-temperature working condition is realized.
In one possible implementation, the thermal management system further includes a sixth cut-off valve, and the throttle valve is connected to the eighth port through the sixth cut-off valve. According to the scheme, the connection between the throttle valve and the evaporator and the connection between the throttle valve and the condenser can be controlled through the opening and closing of the fifth stop valve.
In one possible implementation, the condenser further includes a first flow passage and a second flow passage which are isolated and can perform heat exchange. The first interface of the first flow channel is connected with the first port, and the second interface of the first flow channel is connected with the second port; the first interface and the second interface of the second flow channel are connected with an external cold source. In the application, the condenser can adopt a double-flow-channel heat exchange structure, two flow channels of the double-flow-channel heat exchanger are isolated and arranged in heat conduction contact, one flow channel can be used for circulating a heat medium, the other flow channel can be used for circulating a cold medium, and therefore heat exchange can be carried out in the flowing process of the cold medium and the heat medium.
In one possible implementation, the evaporator further includes a third flow passage and a fourth flow passage which are isolated and can perform heat exchange. The first interface of the third flow channel is connected with the third port, the second interface of the third flow channel is connected with the fourth port, the third interface of the third flow channel is connected with the fifth port, and the fourth interface of the third flow channel is connected with the sixth port; the first interface and the second interface of the fourth flow passage are connected with an external heat source. In the application, the evaporator can adopt a double-flow-channel heat exchange structure, two flow channels of the double-flow-channel heat exchanger are isolated and arranged in heat conduction contact, one flow channel can be used for circulating a heat medium, the other flow channel can be used for circulating a cold medium, and therefore heat exchange can be carried out in the flowing process of the cold medium and the heat medium.
In one possible implementation, the compressor is a compression-expansion all-in-one machine.
In one possible implementation manner, when the thermal management system works in the first mode, if the first adsorption bed works in the desorption state and the second adsorption bed works in the adsorption state, the first stop valve, the fourth stop valve and the sixth stop valve are opened, and the second stop valve, the third stop valve and the fifth stop valve are closed; or, if the first adsorption bed is operated in the adsorption state and the second adsorption bed is operated in the desorption state, the second, third and sixth stop valves are opened, and the first, fourth and fifth stop valves are closed.
In the above scheme, when the adsorption medium output by the adsorption bed can meet the refrigeration requirement only by exchanging heat with the condenser and the evaporator, the fifth stop valve can be controlled to be opened, so that the adsorption medium sequentially passes through the condenser, the throttle valve and the evaporator to complete waste heat recovery, and the refrigeration requirement is met.
In one possible implementation manner, when the thermal management system works in the second mode, if the first adsorption bed works in the desorption state and the second adsorption bed works in the adsorption state, the first stop valve, the fourth stop valve, the fifth stop valve and the sixth stop valve are opened, and the second stop valve and the third stop valve are closed; or, if the first adsorption bed is operated in the adsorption state and the second adsorption bed is operated in the desorption state, the second, third, fifth, and sixth stop valves are opened, and the first and fourth stop valves are closed.
Among the above-mentioned scheme, when the higher or high temperature operational environment that leads to the refrigerating output of heat source temperature that the adsorption bed received is not enough, in order to continuously refrigerate, can control adsorption medium at the compressor mesocycle, the medium that passes through condenser and evaporimeter this moment not only includes the high temperature gaseous adsorption medium of first stop valve output, still includes the high pressure adsorption medium of compressor output, two kinds of media mix the back and carry out the heat transfer with condenser and evaporimeter, carry out the after-filling through compressor output high pressure adsorption medium promptly, thereby realize the continuous refrigeration under the high temperature operating mode.
In a possible implementation manner, when the thermal management system works in the third mode, if the first adsorption bed works in the desorption state and the second adsorption bed works in the adsorption state, the first stop valve, the fourth stop valve and the fifth stop valve are opened, the second stop valve, the third stop valve and the sixth stop valve are closed, and the evaporator and the condenser stop working; or if the first adsorption bed works in an adsorption state and the second adsorption bed works in a desorption state, the second stop valve, the third stop valve and the fifth stop valve are opened, the first stop valve, the fourth stop valve and the sixth stop valve are closed, and the evaporator and the condenser stop working; wherein the compressor operates in an expansion mode.
In the above scheme, when the work changes the lower refrigeration demand that does not have of temperature, can control condenser and evaporimeter stop work to and control compressor work in expansion mode, at this moment, evaporimeter and condenser only are used for the adsorption media transmission, carry out periodic adsorption and desorption basis at first adsorption bed and second adsorption bed, can utilize high temperature gaseous adsorption media to promote the compressor electricity generation, can effectually avoid the waste of waste heat.
In one possible implementation, when the thermal management system operates in the fourth mode, the fifth and sixth stop valves are open, and the first, second, third, and fourth stop valves are closed.
In the above scheme, when the adsorption bed cannot work normally, the medium can be controlled to circulate in the evaporator, the condenser and the compressor, so that the refrigeration requirement is met.
In a second aspect, the present application provides an adsorbent bed refrigeration unit comprising a first adsorbent bed, a second adsorbent bed and a thermal management system as provided in the first aspect of the present application and in any possible design.
For technical effects that can be achieved by the second aspect, please refer to the technical effect description of the corresponding scheme in the first aspect, and detailed description is omitted here.
Drawings
Fig. 1 is a schematic structural diagram of a thermal management system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a thermal management system according to an embodiment of the present application;
FIG. 3 is a first schematic flow diagram of an adsorbent media according to an embodiment of the present disclosure;
FIG. 4 is a schematic flow diagram of an adsorbent media according to an embodiment of the present disclosure;
FIG. 5 is a schematic flow diagram III of an adsorbent media according to an embodiment of the present disclosure;
FIG. 6 is a schematic flow diagram of an adsorbent media according to an embodiment of the present disclosure;
FIG. 7 is a schematic flow diagram of an adsorbent media according to an embodiment of the present application;
FIG. 8 is a schematic flow diagram six of an adsorbent media according to an embodiment of the present application;
fig. 9 is a schematic flow direction diagram seven of an adsorption medium according to an embodiment of the present application.
Reference numerals: 1-a first adsorption bed; 2-a second adsorption bed; 3-a first stop valve; 4-a second stop valve; 5-a third stop valve; 6-a fourth stop valve; 7-a compressor; 8-a condenser; 9-an evaporator; 10-a throttle valve; 11-a fifth stop valve; 12-sixth stop valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.
The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise.
Reference throughout this specification to "one embodiment" or "a particular embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically stated.
In order to facilitate understanding of the thermal management system and the adsorption bed refrigeration equipment provided in the embodiments of the present application, an application scenario of the thermal management system is described first.
The heat management system provided by the embodiment of the application can be applied to adsorption bed equipment and can be used for recovering waste heat generated by an adsorption bed.
With the aggravation of problems such as energy crisis, environmental pollution and the like, energy-saving and environment-friendly products are concerned and favored by the society; the adsorption refrigeration device is a thermodynamic cycle constructed based on an adsorption process and a phase change process, and realizes a refrigeration effect by utilizing thermal drive through the conversion of heat energy, adsorption potential energy and phase change potential energy; the working medium adopted by the adsorption refrigeration device is a natural material and can be well combined in occasions of waste heat recovery and the like, so that the adsorption refrigeration device is an environment-friendly energy-saving product.
However, in the conventional adsorption refrigeration device, if the temperature of the heat source received by the adsorption bed is high or the temperature of the working environment of the adsorption bed refrigeration equipment is too high, the refrigeration capacity cannot meet the requirement, and continuous refrigeration cannot be performed.
In view of this, the embodiment of the present application provides a thermal management system and an adsorption bed refrigeration device, which are used for continuous refrigeration at present and meet refrigeration requirements.
Referring to fig. 1, a schematic structural diagram of a thermal management system according to an embodiment of the present application is shown. Referring to fig. 1, the thermal management system is respectively connected to the first adsorption bed 1 and the second adsorption bed 2, and the first adsorption bed 1 and the second adsorption bed 2 are provided with adsorption media therein, and the thermal management system uses the adsorption media output by the adsorption beds during operation to realize continuous refrigeration.
Referring to fig. 1, the thermal management system mainly includes: a first stop valve 3, a second stop valve 4, a third stop valve 5, a fourth stop valve 6, a compressor 7, a condenser 8, an evaporator 9, and a throttle valve 10.
Referring to fig. 1, the condenser 8 includes a first port connected to an outlet of the first adsorption bed 1 through the first cutoff valve 3, a second port connected to an outlet of the compressor 7, a third port connected to an outlet of the second adsorption bed 2 through the second cutoff valve 4, and a fourth port connected to an eighth port of the evaporator 9 through the throttle valve 10. The evaporator 9 includes a fifth port, a sixth port, a seventh port, and an eighth port, the fifth port is connected to the inlet of the first adsorption bed 1 through the third stop valve 5, the sixth port is connected to the inlet of the second adsorption bed 2 through the fourth stop valve 6, and the seventh port is connected to the inlet of the compressor 7.
Wherein, the inlet of the throttle valve 10 is connected with the fourth port of the condenser 8, and the outlet of the throttle valve 10 is connected with the eighth port of the evaporator 9. The compressor 7 is an expansion and compression integrated machine, and the compressor 7 can work in an expansion mode and can also work in a compression mode. When the compressor 7 operates in the compression mode, the fifth stop valve 11 is connected to the inlet of the compressor 7, and the outlet of the compressor 7 is connected to the seventh port of the condenser 8. When the compressor 7 operates in the expansion mode, the inlet of the compressor 7 is communicated with the seventh port of the condenser 8, and the outlet of the compressor 7 is communicated with the fifth cutoff valve 11.
Referring to fig. 2, in order to control the flow direction of the adsorption medium in the thermal management system, the thermal management system provided by the embodiment of the present application further includes a fifth cut-off valve 11 connected in series with the compressor 7 and a sixth cut-off valve 12 connected in series with the throttle 10. Wherein, the seventh port of the evaporator 9 is communicated with the inlet of the compressor 7 through a fifth stop valve 11, and the throttle valve 10 is communicated with the eighth port through a sixth stop valve 12.
In this embodiment, the condenser 8 and the evaporator 9 in the thermal management system are both dual-channel heat exchangers, two isolated and heat-conducting and contacting channels are provided in the dual-channel heat exchanger, one of the channels can be used for flowing a heat medium, and the other channel can be used for flowing a cold medium, so that heat exchange can be performed during the flowing process of the cold medium and the heat medium.
In the present application, the condenser 8 includes a first flow passage and a second flow passage which are isolated and can perform heat exchange. The first interface of the first flow channel is connected with the first port, the second interface of the first flow channel is connected with the second port, the third interface of the first flow channel is connected with the third port, and the fourth interface of the first flow channel is connected with the fourth port; the first interface and the second interface of the second flow channel are both connected with an external cold source, and a refrigerant capable of performing heat exchange is arranged in the second flow channel. The evaporator 9 includes a third flow passage and a fourth flow passage which are isolated and can perform heat exchange. The first interface of the third flow channel is connected with the fifth port, the second interface of the third flow channel is connected with the sixth port, the third interface of the third flow channel is connected with the seventh port, and the fourth interface of the third flow channel is connected with the eighth port; the first interface and the second interface of the fourth flow passage are connected with an external heat source, and an evaporation refrigerant capable of performing heat exchange is arranged in the fourth flow passage.
In a possible implementation, the condenser 8 further includes a first cavity, a first coil, and a second coil. Specifically, a first interface of the first coil is communicated with the first stop valve 3 and an outlet of the compressor 7, and a second interface of the first coil is connected with a second interface of the second coil; the first interface of the second coil is communicated with the second stop valve 4. Wherein the connection of the first coil and the second coil is communicated with a throttle valve 10. Wherein, first coil pipe and second coil pipe all set up in first cavity.
In specific implementation, the first coil and the second coil form a first flow channel, the first flow channel and the second flow channel are isolated and arranged in thermal contact, the first flow channel can be used for circulating adsorption media, the second flow channel is used for flowing refrigerants, and heat exchange can be carried out in the flowing process of the two media. It should be understood that the embodiment of the present application is described by taking the condenser 8 as a shell-and-tube heat exchanger as an example, and in practical use, the condenser includes, but is not limited to, a plate heat exchanger, a double-tube heat exchanger, etc., and the present application does not limit this.
In an example, the condenser 8 comprises a first tee pipe and a second tee pipe, the first interface of the first coil pipe is communicated with the first stop valve 3 and the compressor 7 through the first tee pipe, the second interface of the first coil pipe, the second interface of the second coil pipe and the throttle valve 10 are communicated through the second tee pipe, namely the first interface of the condenser 8 is connected with the second interface through the first tee pipe.
In another example, the condenser 8 includes a first three-way valve and a second three-way valve therein. Three valve ports of the first three-way valve can be respectively connected with the first stop valve 3, the outlet of the compressor 7 and the first interface of the first coil, and are used for controlling the connection between the first stop valve 3 and the first coil and the connection between the compressor 7 and the first coil, that is, the first port of the condenser 8 is connected with the second port through the first three-way valve. Three valve ports of the second three-way valve can be respectively connected with the second interface of the first coil, the second interface of the second coil and the inlet of the throttle valve 10, and are used for controlling the connection between the first coil and the throttle valve 10 and controlling the connection between the second coil and the throttle valve 10.
It should be noted that, when the condenser 8 exchanges heat with other devices, phase-change heat exchange may be performed, that is, the temperature of the high-temperature gaseous adsorption medium is reduced and liquefied, and in the following process, when the condenser 8 exchanges heat with other devices, the temperature of other adsorption media output by other devices is reduced and liquefied.
In this application, the evaporator 9 further includes a second cavity, a third coil, a fourth coil and a fifth coil. The first interface of the third coil pipe is connected with the third stop valve 5, and the second interface of the third coil pipe is respectively connected with the first interface of the fifth coil pipe and the fifth stop valve 11; the first interface of the fourth coil pipe is connected with the fourth stop valve 6, and the second interface of the fourth coil pipe is respectively connected with the sixth stop valve 12 and the second interface of the fifth coil pipe. Wherein, the third coil pipe, the fourth coil pipe and the fifth coil pipe are all arranged in the second cavity.
In specific implementation, the third coil, the fourth coil and the fifth coil form a third flow channel, the third flow channel and the fourth flow channel are isolated and arranged in thermal contact, the third flow channel can be used for circulating adsorption media, the fourth flow channel is used for flowing evaporation refrigerants, and heat exchange can be performed in the flowing process of the two media. It should be understood that the embodiment of the present application is described by taking the evaporator 9 as a shell-and-tube heat exchanger as an example, and in practical use, the evaporator 9 includes, but is not limited to, a plate heat exchanger, a double-tube heat exchanger, etc., and this is not limited in the present application.
In one example, the evaporator 9 comprises a third tee and a fourth tee. And the second connector of the third coil, the first connector of the fifth coil and the fifth stop valve 11 are communicated through a third three-way pipe. And the second connector of the fourth coil, the second connector of the fifth coil and the sixth stop valve 12 are communicated through a fourth three-way pipe.
In another example, the evaporator 9 comprises a third three-way valve and a fourth three-way valve, wherein three ports of the third three-way valve can be respectively connected with the second interface of the third coil, the first interface of the fifth coil and the fifth stop valve 11, and is used for controlling the connection of the fifth stop valve 11 and the third coil and controlling the connection of the fifth stop valve 11 and the fifth coil. Three valve ports of the fourth three-way valve can be respectively connected with the second interface of the fourth coil, the second interface of the fifth coil and the sixth stop valve 12, and are used for controlling the connection between the sixth stop valve 12 and the fourth coil and the connection between the sixth stop valve 12 and the fifth coil.
It should be noted that, when the evaporator 9 exchanges heat with other equipment, phase-change heat exchange may be performed, that is, the liquid adsorption medium is gasified, and in the following process, when the evaporator 9 exchanges heat with other equipment, the adsorption medium output by other equipment is gasified by heating.
In this application embodiment, can select thermal management system's mode of operation according to adsorption bed and thermal management system's operating mode, thermal management system's operating mode can include absorption refrigeration mode, absorption refrigeration mode + compressor tonifying cold mode, absorption power generation mode and compressor refrigeration mode.
The following describes an operation process of the thermal management system provided in the embodiment of the present application with reference to the embodiment.
Referring to fig. 2, when the cooling capacity of the thermal management system can meet the requirement, the thermal management system may be controlled to operate in the first operation mode, i.e., the adsorption cooling mode. Specifically, if the first adsorption bed 1 is connected to a heat source, the second adsorption bed 2 is connected to a cold source, that is, the first adsorption bed 1 operates in a desorption mode, the second adsorption bed 2 operates in an adsorption mode, the first stop valve 3, the fourth stop valve 6 and the sixth stop valve 12 may be controlled to be opened, the second stop valve 4, the third stop valve 5 and the fifth stop valve 11 may be controlled to be closed, and the adsorption medium may flow in the condenser 8, the throttle valve 10 and the evaporator 9. At this time, the first port of the condenser 8 is connected to the high-temperature gaseous adsorption medium output by the first adsorption bed 1 through the first stop valve 3, the fourth port of the condenser 8 and the inlet of the throttle valve 10 are opened, the high-temperature gaseous adsorption medium exchanges heat with the refrigerant in the condenser 8, the liquid adsorption medium cooled after heat exchange flows to the evaporator 9 through the throttle valve 10 and exchanges heat with the evaporation refrigerant in the evaporator 9, and the adsorption medium after heat exchange flows to the inlet of the second adsorption bed 2 through the fourth stop valve 6, wherein the flow direction of the adsorption medium can be shown in fig. 3. If the first adsorption bed 1 is connected with a cold source and the second adsorption bed 2 is connected with a heat source, that is, the first adsorption bed 1 operates in an adsorption mode and the second adsorption bed 2 operates in a desorption mode, the second stop valve 4, the third stop valve 5 and the sixth stop valve 12 may be controlled to be opened, the first stop valve 3, the fourth stop valve 6 and the fifth stop valve 11 may be controlled to be closed, and the adsorption medium may flow in the condenser 8, the throttle valve 10 and the evaporator 9. At this time, the second port of the condenser 8 is connected to the high-temperature gaseous adsorption medium output by the second adsorption bed 2 through the second stop valve 4, the fourth port of the condenser 8 is connected to the inlet of the throttle valve 10, the high-temperature gaseous adsorption medium exchanges heat with the refrigerant in the condenser 8, the liquid adsorption medium cooled after heat exchange flows to the evaporator 9 through the throttle valve 10 and exchanges heat with the evaporation refrigerant in the evaporator 9, and the adsorption medium after heat exchange flows to the inlet of the first adsorption bed 1 through the third stop valve 5, wherein the flow direction of the adsorption medium can be shown in fig. 4.
Continuing to refer to fig. 2, when the thermal management system is in a high-temperature working condition or the temperature of the heat source received by the adsorption bed is too high, resulting in insufficient cooling capacity in the adsorption refrigeration mode, the thermal management system may be controlled to operate in the second operating mode, that is, the adsorption refrigeration mode + the compressor compensation refrigeration mode. Specifically, if the first adsorption bed 1 is connected to the heat source, the second adsorption bed 2 is connected to the heat source, the compressor 7 is operated in the compression mode, the first, fourth, fifth and sixth cutoff valves 3, 6, 11 and 12 are controlled to be opened, and the second and third cutoff valves 4 and 5 are controlled to be closed, and the adsorption medium flows in the condenser 8, the throttle valve 10 and the evaporator 9, and flows in the evaporator 8, the throttle valve 10, the evaporator 9 and the compressor 7. At this time, the first port of the condenser 8 is connected to the high-temperature gaseous adsorption medium output by the first adsorption bed 1 through the first stop valve 3, the third port of the condenser 8 receives the high-pressure adsorption medium output by the compressor 7, the fourth port of the condenser 8 is connected to the inlet of the throttle valve 10, the high-temperature gaseous adsorption medium and the high-pressure adsorption medium exchange heat with the refrigerant in the condenser 8, the liquid adsorption medium cooled after heat exchange flows to the evaporator 9 through the throttle valve 10 and the sixth stop valve 12 and exchanges heat with the evaporated refrigerant in the evaporator 9, a part of the adsorption medium after heat exchange flows to the inlet of the second adsorption bed 2 through the fourth stop valve 6, and the other part of the adsorption medium after heat exchange is converted into the high-pressure adsorption medium through the fifth stop valve 11 and the compressor 7 and then is output to the third port of the condenser 8, wherein the flow direction of the adsorption medium can be seen in fig. 5. If the first adsorption bed 1 is connected with a cold source, the second adsorption bed 2 is connected with a heat source, the compressor 7 works in a compression mode, the second stop valve 4, the third stop valve 5, the fifth stop valve 11 and the sixth stop valve 12 are controlled to be opened, and the first stop valve 3 and the fourth stop valve 6 are controlled to be closed, at this time, the second port of the condenser 8 is connected with the high-temperature gaseous adsorption medium output by the second adsorption bed 2 through the second stop valve 4, the third port of the condenser 8 receives the high-pressure adsorption medium output by the compressor 7, the fourth port of the condenser 8 is connected with the inlet of the throttle valve 10, the high-temperature gaseous adsorption medium and the high-pressure adsorption medium exchange heat with the refrigerant in the condenser 8, the liquid adsorption medium cooled after heat exchange flows to the evaporator 9 through the throttle valve 10 and the sixth stop valve 12 and exchanges heat with the evaporation refrigerant in the evaporator 9, a part of the adsorption medium after heat exchange flows to the inlet of the first adsorption bed 1 through the third stop valve 5, and the other part of the adsorption medium after heat exchange flows to the third stop valve 11 and the compressor 7 and the high-pressure adsorption medium outputs to the third port of the condenser 8, wherein the flow direction of the adsorption medium can be referred to the figure 6.
It should be understood that, in the above-mentioned working modes of the present application, the adsorption medium passing through the condenser 8 and the evaporator 9 includes not only the high-temperature gaseous adsorption medium output by the first stop valve 3, but also the high-pressure adsorption medium output by the compressor 7, and after mixing, the two media exchange heat with the condenser 8 and the evaporator 9 in sequence, that is, the high-pressure adsorption medium output by the compressor 7 performs cold compensation, thereby implementing continuous refrigeration under the high-temperature working condition.
With continued reference to fig. 2, when the operating environment is at a lower temperature and no refrigeration is required, the thermal management system operates in a third mode of operation, i.e., the sorption generation mode. Specifically, because there is no refrigeration requirement under the current working condition, the condenser 8 and the evaporator 9 can be controlled to stop the heat exchange operation, and only the adsorption medium transmission function is performed. If the first adsorption bed 1 is connected with a heat source, the second adsorption bed is connected with a cold source, the compressor 7 works in an expansion mode, the first stop valve 3, the fourth stop valve 6 and the fifth stop valve 11 are controlled to be opened, and the second stop valve 4, the third stop valve 4 and the sixth stop valve 12 are controlled to be closed. At this time, the adsorption medium flows only in the compressor 7, the adsorption medium is connected to the inlet of the compressor 7 through the first stop valve 3, the first port of the condenser 8, and the third port of the condenser 8, and is subjected to pressure reduction treatment, and the adsorption medium cooled after the pressure reduction treatment flows to the inlet of the second adsorption bed 2 through the fifth stop valve 11, the third port of the evaporator, the second port of the evaporator, and the fourth stop valve 6, where the flow direction of the adsorption medium can be seen in fig. 7. If the first adsorption bed 1 is connected with a cold source, the second adsorption bed 2 is connected with a heat source, and the compressor 7 operates in the expansion mode, the second stop valve 4, the third stop valve 5 and the fifth stop valve 11 can be controlled to be opened, and the first stop valve 3, the fourth stop valve 6 and the sixth stop valve 12 can be controlled to be closed. At this time, the adsorption medium is introduced into the inlet of the compressor 7 through the second stop valve 4, the second port of the condenser 8 and the third port of the condenser 8, and is subjected to pressure reduction treatment, and the adsorption medium cooled after the pressure reduction treatment flows to the inlet of the first adsorption bed 1 through the fifth stop valve 11, the third port of the evaporator, the first port of the evaporator and the third stop valve 5, where the flow direction of the adsorption medium can be shown in fig. 8.
During specific implementation, as no refrigeration requirement exists under the current working condition, the condenser 8 and an external cold source can be controlled to be disconnected, and the evaporator 9 and an external heat source are controlled to be disconnected, so that the condenser 8 and the evaporator 9 are controlled to stop exchanging heat with the flowing adsorption medium.
It should be understood that, because there is no refrigeration requirement under the current working condition, on the basis of periodic adsorption and desorption of the first adsorption bed 1 and the second adsorption bed 2, the high-temperature gaseous adsorption medium output by the adsorption beds is used to drive the compressor 7 to generate electricity, so that waste of waste heat can be effectively avoided.
With continued reference to fig. 2, the thermal management system operates in the compressor cooling mode when the adsorbent bed unit is not operating properly. Specifically, the compressor 7 operates in the expansion mode, and the fifth cut-off valve 11 and the sixth cut-off valve 12 are controlled to be opened. At this time, the adsorption medium flows only in the compressor 7, the inlet of the compressor 7 is connected to the high-temperature adsorption medium output from the outlet of the first adsorption bed 1 through the third port of the condenser 8, the pressure reduction treatment is performed on the received high-temperature adsorption medium, the adsorption medium cooled after the pressure reduction treatment flows to the evaporator 9 through the fifth stop valve 11 and exchanges heat with the evaporation refrigerant in the evaporator, the adsorption medium after the heat exchange flows to the condenser 8 through the sixth stop valve 12 and the throttle valve 11 and exchanges heat with the refrigerant in the condenser, and the adsorption medium after the heat exchange flows to the inlet of the compressor 7 through the third port of the condenser 8. The flow direction of the adsorption medium can be seen in fig. 9.
It should be understood, compare with current adsorption bed waste heat recovery system, current adsorption bed waste heat recovery system has the not enough condition of refrigerating capacity under the high temperature operating mode, consequently can't realize continuous refrigeration, and the thermal management system that this application embodiment provided has add the compression and expansion all-in-one, can adopt the compressor to carry out the after cooling under the high temperature operating mode for thermal management system can refrigerate in succession. In addition, the heat management system that this application embodiment provided, when there is not refrigeration demand, can control condenser and evaporimeter stop work, utilize other adsorption media of high temperature of adsorption bed output to promote the compressor and generate electricity to the effectual waste of avoiding the waste heat can carry out the adjustment of mode according to adsorption bed and heat management system's operating mode, thereby is favorable to promoting the rate of recovery of waste heat.
In this application, can be according to the operating mode of adsorption bed and thermal management system, through opening or closing of control stop valve, switch thermal management system's operating mode to satisfy the refrigeration demand.
In one example, the plurality of stop valves in the thermal management system are electronic control valves, and the controller can control the opening and closing of the stop valves according to the working conditions of the adsorption beds and the working conditions of the thermal management system, so as to control the working mode of the thermal management system. The controller may be disposed inside the thermal management system, or may be a controller in another device.
Based on the foregoing description, the embodiments of the present application further provide an adsorption bed refrigeration apparatus, which includes a first adsorption bed, a second adsorption bed and the foregoing thermal management system.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (11)
1. A thermal management system coupled to a first adsorbent bed and a second adsorbent bed, respectively, comprising: first stop valve, second stop valve, third stop valve, fourth stop valve, compressor, condenser, evaporimeter and choke valve, wherein:
the condenser comprises a first port connected to the outlet of the first adsorption bed through a first shutoff valve and to the outlet of the compressor, and a second port connected to the outlet of the second adsorption bed through the second shutoff valve and to the eighth port of the evaporator through the throttle valve;
the evaporator includes a fifth port connected to an inlet of the first adsorption bed through a third shutoff valve, a sixth port connected to an inlet of the second adsorption bed through the fourth shutoff valve, a seventh port connected to an inlet of the compressor, and the eighth port.
2. The thermal management system of claim 1, further comprising a fifth shutoff valve, wherein a seventh port of the evaporator is connected to an inlet of the compressor through the fifth shutoff valve.
3. The thermal management system of claim 1 or 2, further comprising a sixth shut-off valve, said throttle valve being connected to said sixth port through said sixth shut-off valve.
4. The thermal management system of any of claims 1-3, wherein said condenser further comprises first and second flow passages that are isolated and in heat exchange relation;
a first interface of the first flow passage is connected with the first port, and a second interface of the first flow passage is connected with the second port;
and the first interface and the second interface of the second flow channel are connected with an external cold source.
5. The thermal management system of any of claims 1-4, wherein said evaporator further comprises third and fourth flow paths that are isolated and heat exchangeable;
a first interface of the third flow channel is connected with the third port, a second interface of the third flow channel is connected with the fourth port, a third interface of the third flow channel is connected with the fifth port, and a fourth interface of the third flow channel is connected with the sixth port;
and the first interface and the second interface of the fourth flow passage are connected with an external heat source.
6. The thermal management system of any of claims 1-5, wherein said compressor is a compression-expansion all-in-one machine.
7. The thermal management system of any of claims 1-6, wherein when the thermal management system is operating in a first mode, if the first adsorbent bed is operating in a desorption state and the second adsorbent bed is operating in an adsorption state, the first, fourth, and sixth cutoff valves are open, and the second, third, and fifth cutoff valves are closed; or
And if the first adsorption bed works in an adsorption state and the second adsorption bed works in a desorption state, the second stop valve, the third stop valve and the sixth stop valve are opened, and the first stop valve, the fourth stop valve and the fifth stop valve are closed.
8. The thermal management system of any of claims 1-6, wherein when said thermal management system is operating in a second mode, said first, fourth, fifth, and sixth shut-off valves are open, and said second and third shut-off valves are closed, if said first adsorbent bed is operating in a desorption state and said second adsorbent bed is operating in an adsorption state; or
And if the first adsorption bed works in an adsorption state and the second adsorption bed works in a desorption state, the second stop valve, the third stop valve, the fifth stop valve and the sixth stop valve are opened, and the first stop valve and the fourth stop valve are closed.
9. The thermal management system of any of claims 1-6, wherein when said thermal management system is operating in a third mode, said first, fourth, and fifth shut-off valves are open, and said second, third, and sixth shut-off valves are closed, if said first adsorbent bed is operating in a desorption state and said second adsorbent bed is operating in an adsorption state; or
If the first adsorption bed works in an adsorption state and the second adsorption bed works in a desorption state, the second stop valve, the third stop valve and the fifth stop valve are opened, and the first stop valve, the fourth stop valve and the sixth stop valve are closed; wherein the compressor operates in an expansion mode.
10. The thermal management system of any of claims 1-6, wherein when said thermal management system is operating in a fourth mode, said fifth stop valve and said sixth stop valve are open, and said first stop valve, said second stop valve, said third stop valve, and said fourth stop valve are closed.
11. An adsorbent bed refrigeration unit comprising a first adsorbent bed, a second adsorbent bed and a thermal management system according to any one of claims 1 to 10.
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