CN111059792A - Solar adsorption and absorption type combined indirect cooling system - Google Patents
Solar adsorption and absorption type combined indirect cooling system Download PDFInfo
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- CN111059792A CN111059792A CN201911375046.0A CN201911375046A CN111059792A CN 111059792 A CN111059792 A CN 111059792A CN 201911375046 A CN201911375046 A CN 201911375046A CN 111059792 A CN111059792 A CN 111059792A
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 39
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 30
- 238000001816 cooling Methods 0.000 title claims abstract description 13
- 239000003507 refrigerant Substances 0.000 claims abstract description 58
- 238000005057 refrigeration Methods 0.000 claims abstract description 31
- 239000006096 absorbing agent Substances 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000003463 adsorbent Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 fluorine-chlorine hydrocarbon Chemical class 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
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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
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
- F25B27/007—Machines, plants or systems, using particular sources of energy using solar energy in sorption type systems
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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
- F25B37/00—Absorbers; Adsorbers
-
- 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
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/04—Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
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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
-
- 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]
-
- 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]
- Y02B30/62—Absorption based systems
Abstract
The invention discloses a solar adsorption and absorption type combined indirect cooling system. In the daytime, the adsorption bed absorbs solar energy, the adsorbent begins to desorb, the desorbed refrigerant gas is condensed in the condenser to release heat, the heat and the heat of the auxiliary heater are used for driving the absorption refrigeration system, and the condensed refrigerant liquid is stored in the liquid storage device; the secondary refrigerant is cooled in the evaporator and then enters the air cooler to exchange heat with air in the cold space, and when an absorber of the absorption refrigeration system needs to be cooled, the secondary refrigerant is controlled to flow into the absorber for cooling through the opening and closing of the electromagnetic valve, so that the absorption capacity of the absorber is ensured; the temperature of the adsorption bed is reduced at night, at the moment, the adsorbent starts to adsorb the refrigerant, the refrigerant in the adsorption refrigeration system flows out of the liquid reservoir, flows through the throttling valve, and reenters the adsorption bed after the phase-change refrigeration process is completed in the evaporator; the purposes of energy conservation, environmental protection and stable operation of a refrigerating system are achieved.
Description
Technical Field
The invention relates to the field of indirect refrigeration, in particular to an indirect cooling system which can adopt absorption type and adsorption type combined cooling.
Background
In recent years, since environmental problems such as the destruction of the ozone layer in the atmosphere and the generation of the greenhouse effect have been found in the freon refrigerants, a consensus has been made internationally that CFC refrigerants are completely forbidden and HCFC refrigerants are increasingly used in a limited manner. For this reason, global researchers have also actively studied the freon replacement technology, mainly in the research of artificially synthesized refrigerant-based working media, but a large number of facts indicate that many artificially synthesized substances, although beneficial to human beings from the beginning, gradually show a great destructive effect on the ecological environment with the large amount and long-term use of the substances. In this case absorption and adsorption refrigeration systems have significant advantages.
The absorption refrigeration uses naturally existing water or ammonia and the like as a refrigerant, and is harmless to the environment and the atmospheric ozone layer; the heat energy is used as driving energy, the heat energy generated by boiler steam and fuel can be utilized, low-grade heat energy such as waste heat, solar energy and the like can be utilized, and meanwhile, the refrigerator runs in a vacuum state, and the refrigerator is simple in structure, safe, reliable and convenient to install. However, the absorber of an absorption refrigeration system needs to be cooled, which otherwise would result in an excessively high temperature and a reduced absorption capacity. The adsorption type refrigeration system can play an important role in energy recovery and energy conservation, simultaneously adopts non-fluorine-chlorine hydrocarbon substances as a refrigerant, is suitable for the current environmental protection requirement, and has a series of advantages of simple structure, no moving parts, no noise, good shock resistance, almost no place limitation and the like, but the condensation heat of the adsorption type refrigeration system is not reasonably utilized.
Considering that the indirect refrigeration system has the advantages that the refrigerant circulation loop can be concentrated in a small space, the direct cooling such as the cold energy convenient for long-distance transportation can not be replaced, and the indirect refrigeration system has wide development and application prospect, a novel indirect refrigeration system which can combine the advantages of the three and overcome the problems is needed to be researched.
Disclosure of Invention
Aiming at the defects of the system and the requirements on environmental protection and energy saving of the system, the invention provides the solar adsorption and absorption combined indirect cooling system which is reasonable and simple in design, recycles the condensation heat of the adsorption refrigeration system and solves the problem of absorption capacity reduction of the absorption refrigeration system caused by overhigh temperature of an absorber.
In order to achieve the above purpose, the invention adopts the following technical means:
the invention provides a solar adsorption and absorption type combined indirect cooling system, which consists of an adsorption type refrigerating system, an absorption type refrigerating system and a secondary refrigerant system,
the adsorption refrigeration system comprises an adsorption bed 1, a condenser 2, a liquid storage device 3, a throttle valve I4 and an evaporator I5; the outlet of the refrigerant of the adsorption bed 1 is connected with the inlet pipeline of the condenser 2, the outlet of the condenser 2 is connected with the inlet pipeline of the liquid storage device 3, the outlet of the liquid storage device 3 is connected with the inlet pipeline of the throttle valve I4, the outlet of the throttle valve I4 is connected with the inlet pipeline of the evaporator I5, and the outlet of the evaporator I5 is connected with the refrigerant inlet pipeline of the adsorption bed 1;
the absorption refrigeration system comprises an absorber 6, a solution pump 7, a second throttling valve 8, a heat exchanger 9, a generator 10, a condenser 11, a third throttling valve 12 and a second evaporator 13; the outlet of the second evaporator 13 is connected with the inlet pipeline I of the absorber 6, the inlet pipeline II of the absorber is connected with the outlet of the second throttling valve 8, the inlet of the second throttling valve 8 is connected with the outlet pipeline II of the generator 10 through the heat exchanger 9, the outlet pipeline of the absorber is connected with the inlet pipeline of the solution pump 7, the outlet of the solution pump 7 is connected with the inlet pipeline of the generator 10 through the heat exchanger 9, the outlet pipeline I of the generator 10 is connected with the inlet of the condenser 11, the outlet of the condenser 11 is connected with the inlet pipeline of the third throttling valve 12, and the outlet of the third throttling valve 12 is connected with;
the secondary refrigerant system comprises an air cooler 14, a secondary refrigerant pump 15, a first electromagnetic valve 16 and a second electromagnetic valve 17; the air cooler 14 is connected with an inlet pipeline of the coolant pump 15, an outlet of the coolant pump 15 is divided into two paths, one path is led into the absorber 6 through the first electromagnetic valve 16, the other path is converged through the second electromagnetic valve 17 and is connected with a coolant inlet pipeline of the first evaporator 5, a coolant outlet pipeline of the first evaporator 5 is connected with a coolant inlet pipeline of the second evaporator 13, and a coolant outlet pipeline of the second evaporator 13 is connected with an inlet of the air cooler 14.
The invention has the beneficial effects that:
1. the cooling of the absorber is completed through the opening and closing of the secondary refrigerant valve, the absorption capacity reduction caused by the temperature rise of the absorber is avoided, and the absorption refrigeration system can stably run.
2. The condensing heat of the recovery adsorption type refrigerating system drives the absorption type refrigerating system, so that energy is saved, and heat pollution in the environment caused by waste heat is avoided.
3. The whole system does not adopt Freon as a refrigerant, and the effect of protecting the environment is achieved.
Drawings
Fig. 1 is a flow diagram of a solar adsorption and absorption type combined indirect cooling system of the invention.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Referring to fig. 1, the system consists of an adsorption refrigeration system, an absorption refrigeration system and a secondary refrigerant system, wherein the adsorption refrigeration system comprises an adsorption bed 1, a condenser 2, a liquid storage device 3, a throttle valve I4 and an evaporator I5; the outlet of the refrigerant of the adsorption bed 1 is connected with the inlet pipeline of the condenser 2, the outlet of the condenser 2 is connected with the inlet pipeline of the liquid storage device 3, the outlet of the liquid storage device 3 is connected with the inlet pipeline of the throttle valve I4, the outlet of the throttle valve I4 is connected with the inlet pipeline of the evaporator I5, and the outlet of the evaporator I5 is connected with the refrigerant inlet pipeline of the adsorption bed 1;
the absorption refrigeration system comprises an absorber 6, a solution pump 7, a second throttling valve 8, a heat exchanger 9, a generator 10, a condenser 11, a third throttling valve 12 and a second evaporator 13; the outlet of the second evaporator 13 is connected with the inlet pipeline I of the absorber 6, the inlet pipeline II of the absorber is connected with the outlet of the second throttling valve 8, the inlet of the second throttling valve 8 is connected with the outlet pipeline II of the generator 10 through the heat exchanger 9, the outlet pipeline of the absorber is connected with the inlet pipeline of the solution pump 7, the outlet of the solution pump 7 is connected with the inlet pipeline of the generator 10 through the heat exchanger 9, the outlet pipeline I of the generator 10 is connected with the inlet of the condenser 11, the outlet of the condenser 11 is connected with the inlet pipeline of the third throttling valve 12, and the outlet of the third throttling valve 12 is connected with;
the secondary refrigerant system comprises an air cooler 14, a secondary refrigerant pump 15, a first electromagnetic valve 16 and a second electromagnetic valve 17; the air cooler 14 is connected with an inlet pipeline of the coolant pump 15, an outlet of the coolant pump 15 is divided into two paths, one path is led into the absorber 6 through the first electromagnetic valve 16, the other path is converged through the second electromagnetic valve 17 and is connected with a coolant inlet pipeline of the first evaporator 5, a coolant outlet pipeline of the first evaporator 5 is connected with a coolant inlet pipeline of the second evaporator 13, and a coolant outlet pipeline of the second evaporator 13 is connected with an inlet of the air cooler 14.
In daytime, the temperature of the heat absorbed by the adsorption bed 1 in the adsorption refrigeration system is increased to generate desorption effect, the refrigerant gas is desorbed from the adsorbent, the pressure of the refrigerant gas in the system is increased, when the saturated pressure is reached, the refrigerant gas is condensed in the condenser 2 and releases latent heat, and the condensed refrigerant liquid is stored in the liquid storage device 3. The generator 10 of the absorption refrigeration system absorbs the heat and the heat of the auxiliary heater, the refrigerant solution is heated to boiling, the generated refrigerant vapor is rectified to obtain almost pure refrigerant vapor, then the refrigerant vapor enters the condenser 11 to be condensed into liquid refrigerant, then the liquid refrigerant flows through the throttle valve 12, is throttled and depressurized, enters the evaporator II 13 to complete the refrigeration process, and then is absorbed by the absorber 6. The concentrated refrigerant solution formed in the absorber 6 is pressurized by a solution pump 7 and fed into a generator 10, where the concentrated solution is heated to boiling in the generator 10. The weak solution formed in the generator 10 is returned to the absorber 6 through the heat exchanger 9, and a second throttle valve 8 is installed on a connection pipe between the generator 10 and the absorber 6 in order to maintain a pressure difference between the two. When the temperature of the absorber 6 rises to affect the absorption capacity of the absorber 6, the secondary refrigerant cooled by the evaporator II 13 enters the air cooler 14 to finish heat exchange with cold space air and then enters the secondary refrigerant pump 15 to be pressurized, at the moment, the stop valve II 17 is closed, the stop valve I16 is opened, the pressurized secondary refrigerant flows into the absorber 6 to be cooled, and then flows through the evaporator I5 of the adsorption refrigeration system and the evaporator II 13 of the absorption refrigeration system; and when the absorber does not need to be cooled, closing the first stop valve 16, and opening the second stop valve 17, wherein the secondary refrigerant directly enters the first evaporator 5 and the second evaporator 13 after exiting the secondary refrigerant pump 15. At night, the temperature of the adsorption bed 1 is reduced, the adsorbent starts to adsorb the refrigerant in the system, at the moment, the refrigerant enters the evaporator 5 through the liquid accumulator 3 and the throttle valve 4 in sequence to cool the secondary refrigerant, the refrigeration process is completed, the formed refrigerant gas is adsorbed by the adsorbent in the adsorption bed, so far, the adsorption refrigeration system completes a cycle, and the whole solar adsorption and absorption combined indirect cooling system completes the cycle.
While the present invention has been described above with reference to the accompanying drawings, it is not limited to the above specific embodiments, which are illustrative only and not restrictive. The process of the invention is slightly changed and protected.
Claims (1)
1. A solar energy adsorption and absorption type combined indirect cooling system is characterized by comprising an adsorption type refrigerating system, an absorption type refrigerating system and a secondary refrigerant system,
the adsorption refrigeration system comprises an adsorption bed (1), a condenser (2), a liquid storage device (3), a throttle valve I (4) and an evaporator I (5); the refrigerant outlet of the adsorption bed (1) is connected with the inlet pipeline of the condenser (2), the outlet of the condenser (2) is connected with the inlet pipeline of the liquid storage device (3), the outlet of the liquid storage device (3) is connected with the inlet pipeline of the throttle valve I (4), the outlet of the throttle valve I (4) is connected with the inlet pipeline of the evaporator I (5), the outlet of the evaporator I (5) is connected with the refrigerant inlet pipeline of the adsorption bed (1),
the absorption refrigeration system comprises an absorber (6), a solution pump (7), a second throttling valve (8), a heat exchanger (9), a generator (10), a condenser (11), a third throttling valve (12) and a second evaporator (13); the outlet of the second evaporator (13) is connected with the inlet pipeline I of the absorber (6), the inlet pipeline II of the absorber is connected with the outlet of the second throttling valve (8), the inlet of the second throttling valve (8) is connected with the outlet pipeline II of the generator (10) through the heat exchanger (9), the outlet pipeline of the absorber is connected with the inlet pipeline of the solution pump (7), the outlet of the solution pump (7) is connected with the inlet pipeline of the generator (10) through the heat exchanger (9), the outlet pipeline I of the generator (10) is connected with the inlet of the condenser (11), the outlet of the condenser (11) is connected with the inlet pipeline of the third throttling valve (12), and the outlet of the third throttling valve (12) is connected with the inlet pipeline of the second evaporator (13;
the secondary refrigerant system comprises an air cooler (14), a secondary refrigerant pump (15), a first electromagnetic valve (16) and a second electromagnetic valve (17); the air cooler (14) is connected with an inlet pipeline of the secondary refrigerant pump (15), an outlet of the secondary refrigerant pump (15) is divided into two paths, one path of the secondary refrigerant pump is introduced into the absorber (6) through the first electromagnetic valve (16), the other path of the secondary refrigerant pump is converged through the second electromagnetic valve (17) and is connected with a secondary refrigerant inlet pipeline of the first evaporator (5), a secondary refrigerant outlet pipeline of the first evaporator (5) is connected with a secondary refrigerant inlet pipeline of the second evaporator (13), and a secondary refrigerant outlet pipeline of the second evaporator (13) is connected with an inlet of the air cooler (14).
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| CN201911375046.0A CN111059792A (en) | 2019-12-27 | 2019-12-27 | Solar adsorption and absorption type combined indirect cooling system |
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| CN201911375046.0A CN111059792A (en) | 2019-12-27 | 2019-12-27 | Solar adsorption and absorption type combined indirect cooling system |
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Citations (6)
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2019
- 2019-12-27 CN CN201911375046.0A patent/CN111059792A/en active Pending
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