CN214172602U - Solar energy sprays and compression coupled's double evaporation refrigerating plant - Google Patents
Solar energy sprays and compression coupled's double evaporation refrigerating plant Download PDFInfo
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- CN214172602U CN214172602U CN202022894051.7U CN202022894051U CN214172602U CN 214172602 U CN214172602 U CN 214172602U CN 202022894051 U CN202022894051 U CN 202022894051U CN 214172602 U CN214172602 U CN 214172602U
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Abstract
The utility model discloses a solar energy sprays and compression coupled's two evaporation refrigerating plant relates to the refrigerating plant field. In the existing system, high-temperature high-pressure steam is directly throttled to low-temperature low-pressure liquid refrigerant, irreversible throttling loss exists, the outlet of a two-phase ejector is a gas-liquid mixture, and a gas-liquid separator is required to be arranged in a conventional injection/compression refrigeration system, so that the performance of the refrigeration system is influenced. The utility model discloses a solar collector, hot water storage tank, first water pump, second water pump, generator, steam ejector, condenser, working medium pump, double-phase sprayer, expansion valve, low temperature evaporimeter, high temperature evaporimeter, scroll compressor and six solenoid valves. The switching of 3 operation modes can be conveniently realized, gas-liquid two-phase balance can be effectively kept, the suction pressure of a scroll compressor and a steam ejector is improved, the secondary fluid inlet pressure of the steam ejector during weak irradiation is improved, the device performance and the solar energy utilization rate are improved, and the system operation stability is improved.
Description
Technical Field
The utility model relates to a refrigerating plant field especially relates to solar energy sprays and compression coupled's two evaporation refrigerating plant.
Background
At present, according to the research report of 2018 on energy consumption of Chinese buildings, the total energy consumption of the buildings in China reaches 8.99 million tons of standard coal and accounts for 20.6 percent of the total energy consumption of the whole country. In public buildings, the energy consumption of the heating, ventilating and air conditioning accounts for 50% -60% of the total energy consumption of the buildings. In order to solve the problems of energy shortage and environmental pollution, the hot compression refrigeration technology driven by low-grade energy has attracted attention of many scholars at home and abroad.
The injection refrigeration system has simple structure, low initial investment and maintenance cost and low generation temperature, so that the injection refrigeration by utilizing solar energy becomes an effective method. However, the solar energy has transient property, and the performance of the solar jet refrigeration system is unstable. Therefore, a system for effectively coupling a vapor compression refrigeration system and a solar jet refrigeration system is proposed, which can improve the mechanical performance coefficient (refrigerating capacity/power consumption) by more than 50%.
For the search of the related existing patents, patent with publication number CN102635972A discloses a "cold storage type solar energy injection and compression coupling refrigerating device", in which an injection refrigerating subsystem and a compression refrigerating subsystem are overlapped together through an evaporative cooler/evaporative condenser, and the refrigeration and cold storage are realized through the switching of a valve according to the solar radiation condition. The patent with publication number CN1776327A discloses an "automobile air-conditioning refrigeration system driven by the mixture of the compressor and the exhaust gas waste heat", in the process of using the air conditioner, the jet refrigeration driven by the exhaust gas waste heat is always operated, and the insufficient refrigeration capacity is supplemented by the compression refrigeration. The patent with publication number CN204460839U discloses a "vapor compression-injection coupled refrigeration system with liquid intermediate pressurization", which utilizes a two-stage injector method to increase the injection coefficient of the injector, and simultaneously save the power consumption of the compressor and improve the energy efficiency of the whole system. The 204460837U patent discloses an improved vapor compression-injection coupled refrigeration system which utilizes a portion of condensed and throttled two-phase fluid to cool the superheated gas at the outlet of a scroll compressor, and the mixed two-phase refrigerant is sucked in by an ejector. The improvement not only saves the power consumption of the scroll compressor, but also increases the injection coefficient of the injector. Nevertheless, above-mentioned utility model technique improves the performance of system through the effective overlapping/coupling with vapor compression refrigerating system and sun injection refrigerating system, has improved the utilization ratio to solar energy. However, the high-temperature and high-pressure steam is directly throttled to the low-temperature and low-pressure liquid refrigerant, so that a large amount of irreversible throttling loss exists, and the further improvement of the system performance is influenced.
The two-phase ejector has no moving parts, is not easy to corrode in a two-phase environment and has high reliability. For a well-designed two-phase ejector, the expansion of the fluid in the throat is approximately isentropic, and is therefore a promising new energy-saving technology to replace the throttle valve. However, the outlet of the two-phase ejector is a gas-liquid mixture, and a gas-liquid separator is required to be arranged in the conventional injection/compression refrigeration system, so that the following problems exist: 1. in order to maintain the gas-liquid balance of the system, the injection coefficient mu and the outlet dryness q of the two-phase injector must satisfy q (1+ mu) =1, which is difficult to control in the practical system; 2. the efficiency of the vapor-liquid separator affects the performance of the conventional ejector/compression refrigeration system, and when the efficiency is less than 85%, the performance of the system is lower than that of the conventional vapor compression refrigeration system.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model and the technical task that provides are perfected and improved prior art scheme, provide solar energy and spray and compression coupled's two evaporation refrigerating plant to the realization is to solar energy's classification and high-efficient utilization, improves conventional solar energy and sprays refrigerating system's performance and stability, and solves the problem of double-phase sprayer gas-liquid imbalance and is the purpose. Therefore, the utility model adopts the following technical scheme.
The solar energy injection and compression coupled double-evaporation refrigerating device comprises a solar heat collection subsystem and an injection compression coupled refrigerating subsystem, wherein in the solar heat collection subsystem, an outlet of a solar heat collector is connected with an a end of a high-temperature water inlet of a heat storage water tank, a b end of a low-temperature water outlet of the heat storage water tank is connected with an inlet of a first water pump, an outlet of the first water pump is connected with an inlet of the solar heat collector, a d end of a high-temperature water outlet of the heat storage water tank is connected with an a end of a hot water side inlet of a generator, a b end of a hot water side outlet of the generator is connected with an inlet of a second water pump, and an outlet of the second water pump is connected with a c end of a low-temperature water inlet of the heat storage water tank; in the injection compression coupling refrigeration subsystem, the end d of a generator refrigerant side outlet is connected with the end a of a steam ejector working fluid inlet, the end c of the steam ejector outlet is connected with a condenser inlet through a first electromagnetic valve, the condenser outlet is divided into three paths, the first path is connected with a working medium pump inlet through a second electromagnetic valve, a working medium pump outlet is connected with the end c of the generator refrigerant side inlet, the second path is connected with the end a of a two-phase ejector working fluid inlet, the third path is connected with a low-temperature evaporator inlet through an expansion valve, the low-temperature evaporator outlet is connected with the end b of a two-phase ejector injection fluid inlet, the end c of the two-phase ejector outlet is connected with a high-temperature evaporator inlet, the high-temperature evaporator outlet is divided into two paths, one path is connected with the end b of the steam ejector injection fluid inlet through a third electromagnetic valve, the other path is connected with the inlet of a scroll compressor through a fourth electromagnetic valve, and the scroll compressor outlet is divided into two paths, one path is connected with the end b of the injection fluid inlet of the steam ejector through a fifth electromagnetic valve, and the other path is connected with the inlet of the condenser through a sixth electromagnetic valve.
The six electromagnetic valves are arranged, so that switching of multiple operation modes is convenient to realize, the low-temperature evaporator and the high-temperature evaporator are respectively arranged at the inlet and the outlet of the injection fluid of the two-phase ejector, the problem of gas-liquid two-phase unbalance of a traditional two-phase ejector refrigeration system is avoided, two different evaporation temperatures are provided, condensate is expanded at the throat parts of the two-phase ejector in an approximately isentropic manner, expansion work in a throttling process is fully recovered, and the suction pressure of the scroll compressor is improved by recovering throttling loss of the two-phase ejector. When the solar radiation intensity is weak, the vortex compressor can effectively improve the pressure of the secondary fluid inlet of the steam ejector, improve the performance of the steam ejector, avoid the condition of working disorder of the steam ejector, improve the performance of the device and the solar energy utilization rate, and improve the stability of system operation.
As a preferable technical means: the working fluid inlet, the injection fluid inlet and the steam ejector outlet of the steam ejector are all gaseous refrigerants, and an isobaric mixing ejector is adopted; the working fluid inlet of the two-phase ejector is liquid refrigerant, the injection fluid inlet is gaseous refrigerant, the outlet of the two-phase ejector is two-phase wet steam, and the equal-area mixing ejector is adopted. The device performance can be optimized effectively.
As a preferable technical means: the device adopts low-pressure refrigerant, including R134a, environmental protection refrigerant R1234yf or R1234 ze. The power consumption of the working medium pump can be reduced, and the thermodynamic performance and the operation reliability of the device are improved.
As a preferable technical means: the working medium pump is a plunger pump with continuously adjustable flow, the expansion valve is an electromagnetic expansion valve with adjustable opening, and the scroll compressor is a variable frequency compressor. The high-efficiency work of the device under variable working conditions is ensured.
As a preferable technical means: the outlet of the condenser is provided with a liquid storage device. The requirement of refrigerant flow regulation when the cold load changes can be effectively met.
As a preferable technical means: the outlet of the scroll compressor is provided with an oil separator, so that lubricating oil is prevented from entering the steam ejector.
Has the advantages that:
1. by arranging six electromagnetic valves, the switching of various operation modes is convenient to realize, and the stability of system operation is improved.
2. A low-temperature evaporator and a high-temperature evaporator are respectively arranged at an injection fluid inlet and an injection fluid outlet of the two-phase ejector, so that the problem of gas-liquid two-phase unbalance of a traditional two-phase ejector refrigeration system is solved, two different evaporation temperatures are provided, and the refrigeration and fresh-keeping requirements can be met.
3. The condensate expands in the throat part of the two-phase ejector in an approximate isentropic manner, the expansion work in the throttling process is fully recovered, the suction pressure of the scroll compressor is improved, the power consumption of the scroll compressor is reduced, and the mechanical performance coefficient is improved by 9-16%.
4. When solar radiation intensity is weaker, the scroll compressor effectively improves the pressure of a secondary fluid inlet of the steam ejector, improves the performance of the steam ejector, avoids the condition of working disorder, improves the solar energy utilization rate of the device and the stability of system operation, and the thermal coefficient of the system can reach 0.6-4.2.
Drawings
Fig. 1 is a schematic connection diagram of the present invention.
In the figure: 1-a solar heat collector; 2-a heat storage water tank; 3-a first water pump; 4-a second water pump; 5-a generator; 6-steam ejector; 7-a condenser; 8-a working medium pump; 9-a two-phase ejector; 10-an expansion valve; 11-a low temperature evaporator; 12-a high temperature evaporator; 13-scroll compressor. 14-a first solenoid valve; 15-a second solenoid valve; 16-a third solenoid valve; 17-a fourth solenoid valve; 18-a fifth solenoid valve; 19-sixth solenoid valve.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, the solar injection and compression coupled dual-evaporation refrigeration device comprises a solar heat collection subsystem and an injection compression coupled refrigeration subsystem, wherein in the solar heat collection subsystem, an outlet of a solar heat collector 1 is connected with an a end of a high-temperature water inlet of a heat storage water tank 2, a b end of a low-temperature water outlet of the heat storage water tank 2 is connected with an inlet of a first water pump 3, an outlet of the first water pump 3 is connected with an inlet of the solar heat collector 1, a d end of a high-temperature water outlet of the heat storage water tank 2 is connected with an a end of a hot water side inlet a of a generator 5, a b end of a hot water side outlet of the generator 5 is connected with an inlet of a second water pump 4, and an outlet of the second water pump 4 is connected with a c end of a low-temperature water inlet of the heat storage water tank 2; in the injection compression coupling refrigeration subsystem, the end d of the refrigerant side outlet of the generator 5 is connected with the end a of the working fluid inlet of the steam ejector 6, the end c of the outlet of the steam ejector 6 is connected with the inlet of the condenser 7 through the first electromagnetic valve 14, the outlet of the condenser 7 is divided into three paths, the first path is connected with the inlet of the working fluid pump 8 through the second electromagnetic valve 15, the outlet of the working fluid pump 8 is connected with the end c of the refrigerant side inlet of the generator 5, the second path is connected with the end a of the working fluid inlet of the two-phase ejector 9, the third path is connected with the inlet of the low-temperature evaporator 11 through the expansion valve 10, the outlet of the low-temperature evaporator 11 is connected with the end b of the injection fluid inlet of the two-phase ejector 9, the end c of the outlet of the two-phase ejector 9 is connected with the inlet of the high-temperature evaporator 12, the outlet of the high-temperature evaporator 12 is divided into two paths, one path is connected with the end b of the injection fluid inlet of the steam ejector 6 through the third electromagnetic valve 16, the other path is connected with the inlet of the scroll compressor 13 through the fourth electromagnetic valve 17, the outlet of the scroll compressor 13 is divided into two paths, one path is connected with the b end of the injection fluid inlet of the steam ejector 6 through a fifth electromagnetic valve 18, and the other path is connected with the inlet of the condenser 7 through a sixth electromagnetic valve 19.
The working fluid inlet, the injection fluid inlet and the outlet of the steam ejector 6 are all gaseous refrigerants, and an isobaric mixing ejector is adopted; the working fluid inlet of the two-phase ejector 9 is liquid refrigerant, the injection fluid inlet is gaseous refrigerant, the outlet of the two-phase ejector 9 is two-phase wet steam, and a mixing ejector with the same area is adopted. The device performance can be optimized effectively.
The device adopts low-pressure refrigerant, including R134a, environmental protection refrigerant R1234yf or R1234 ze. The power consumption of the working medium pump 8 can be reduced, and the thermodynamic performance and the operation reliability of the device are improved.
The working medium pump 8 is a plunger pump with continuously adjustable flow, the expansion valve 10 is an electromagnetic expansion valve with adjustable opening, and the scroll compressor 13 is a variable frequency compressor, so that the device can work efficiently under variable working conditions.
The outlet of the condenser 7 is provided with a liquid storage device, so that the requirement of refrigerant flow regulation when the cold load changes can be effectively met.
The scroll compressor 13 outlet is provided with an oil separator to prevent lubricant from entering the steam injector 6.
The device is provided with three operation modes, namely a solar jet refrigeration mode, a solar pressure-boosting jet refrigeration mode and a compression refrigeration mode, and six electromagnetic valves are switched on/off according to the solar radiation intensity to switch the operation modes. The solar jet refrigeration mode operates when the solar radiation intensity is larger than or equal to 800W/m 2, the solar pressure-increasing jet refrigeration mode operates when the solar radiation intensity is larger than or equal to 200W/m 2 and smaller than 800W/m 2, and the compression refrigeration mode operates when the solar radiation intensity is smaller than 200W/m 2 or no solar radiation. The grading and the high-efficiency utilization of the solar energy are realized.
The working methods of the three refrigeration modes are as follows:
solar jet cooling mode: when the solar radiation intensity is larger than or equal to 800W/m 2, a first electromagnetic valve 14, a second electromagnetic valve 15 and a third electromagnetic valve 16 are operated to be opened, a fourth electromagnetic valve 17, a fifth electromagnetic valve 18 and a sixth electromagnetic valve 19 are operated to be closed, at the moment, in the solar heat collection subsystem, water absorbs solar radiation in a solar heat collector 1, the water is heated into high-temperature water and flows into a heat storage water tank 2, low-temperature water flows out of the heat storage water tank 2 and is sent back to the solar heat collector 1 through a first water pump 3, the high-temperature water at the outlet of the heat storage water tank 2 exchanges heat with a refrigerant side in a generator 5, and the water releasing heat is sent back to the heat storage water tank 2 through a second water pump 4; in the injection compression coupling refrigeration subsystem, a refrigerant in a generator 5 absorbs heat on a water side and is evaporated into high-temperature and high-pressure steam, then the steam enters a steam ejector 6, the superheated steam is expanded into low-pressure fluid at a throat outlet and injects low-temperature and low-pressure gaseous refrigerant from an outlet of a high-temperature evaporator 12, after the two fluids are mixed, recompression is realized in the steam ejector 6, superheated gas with intermediate temperature and pressure at an outlet enters a condenser 7 through a first electromagnetic valve 14 to release heat and condense, outlet condensate is divided into three paths, one path of the superheated gas is sequentially sent back to the generator 5 through a second electromagnetic valve 15 and a working medium pump 8, the other path of the superheated gas is used as working fluid of a two-phase ejector 9, the other path of the superheated gas is throttled into a gas-liquid mixture in an expansion valve 10 and enters a low-temperature evaporator 11 to absorb heat and evaporate, and the low-temperature and low-pressure gaseous refrigerant at the outlet is injected by the two-phase ejector 9, the two flows are mixed in the two-phase ejector 9, the pressure is increased to a certain degree and is changed into two-phase wet steam, the wet steam enters the high-temperature evaporator 12 for further heat absorption and refrigeration, and the outlet low-pressure steam is injected by the steam ejector 6 through the third electromagnetic valve 16, so that the whole circulation process is completed.
Solar pressure-increasing jet refrigeration mode: when the solar radiation intensity is more than or equal to 200W/m 2 and less than 800W/m 2, the first electromagnetic valve 14, the second electromagnetic valve 15, the fourth electromagnetic valve 17 and the fifth electromagnetic valve 18 are opened, the third electromagnetic valve 16 and the sixth electromagnetic valve 19 are closed, at the moment, in the solar heat collection subsystem, water absorbs solar radiation in the solar heat collector 1, the water is heated into high-temperature water and flows into the heat storage water tank 2, low-temperature water flows out of the heat storage water tank 2 and is sent back to the solar heat collector 1 through the first water pump 3, the high-temperature water at the outlet of the heat storage water tank 2 exchanges heat with a refrigerant side in the generator 5, and the water releasing heat is sent back to the heat storage water tank 2 through the second water pump 4; in the injection compression coupling refrigeration subsystem, a refrigerant in a generator 5 absorbs heat on a water side and is evaporated into high-temperature and high-pressure steam, then the steam enters a steam ejector 6, the superheated steam is expanded into low-pressure fluid at a throat part outlet and ejects the superheated steam from an outlet of a scroll compressor 13, after being mixed, two fluids are recompressed in the steam ejector 6, the superheated gas with intermediate temperature and pressure at the outlet enters a condenser 7 through a first electromagnetic valve 14 to release heat and condense, outlet condensate is divided into three paths, one path of the superheated gas passes through a second electromagnetic valve 15 and a working medium pump 8 in sequence and is sent back to the generator 5, the other path of the superheated gas is used as working fluid of a two-phase ejector 9, the other path of the superheated gas is throttled into a gas-liquid mixture in an expansion valve 10 and enters a low-temperature evaporator 11 to absorb heat and evaporate, a low-temperature and low-pressure gaseous refrigerant at the outlet is ejected by the two-phase ejector 9, and the two-phase ejector 9 are mixed, the pressure is increased to a certain extent and is changed into two-phase wet steam, the wet steam enters the high-temperature evaporator 12 to further absorb heat for refrigeration, the low-pressure steam at the outlet enters the scroll compressor 13 through the fourth electromagnetic valve 17 to be boosted, the superheated steam at the outlet of the scroll compressor 13 is injected by the steam injector 6 after passing through the fifth electromagnetic valve 18, and the whole circulation process is completed.
Compression refrigeration mode of operation: when the solar radiation intensity is less than 200W/m 2 or no solar radiation exists, the generation temperature of the generator 5 is not enough to drive the steam ejector 6 to work, the first electromagnetic valve 14, the second electromagnetic valve 15, the third electromagnetic valve 16 and the fifth electromagnetic valve 18 are closed, the fourth electromagnetic valve 17 and the sixth electromagnetic valve 19 are opened, at the moment, the high-temperature and high-pressure condensate at the outlet of the condenser 7 is divided into two paths, one path is used as the working fluid of the two-phase ejector 9, the other path is throttled in the expansion valve 10 to form a gas-liquid mixture, the gas-liquid mixture enters the low-temperature evaporator 11 to absorb heat for evaporation, and the low-temperature and low-pressure gas refrigerant at the outlet is injected by the two-phase ejector 9. The two flows are mixed in the two-phase ejector 9, the pressure is increased to a certain degree, and the two flows are changed into two-phase wet steam. The wet steam enters the high-temperature evaporator 12 for further heat absorption and refrigeration, the low-pressure steam at the outlet enters the scroll compressor 13 through the fourth electromagnetic valve 17 for pressure increase, the superheated steam at the outlet directly enters the condenser 7 through the sixth electromagnetic valve 19 for heat release and condensation, and the whole circulation process is completed.
The switching of 3 operation modes is conveniently realized through the on/off switching of six electromagnetic valves, a low-temperature evaporator 11 and a high-temperature evaporator 12 are respectively arranged at the inlet and the outlet of the injection fluid of the two-phase injector 9, the problem of gas-liquid two-phase unbalance of a traditional two-phase injector refrigerating system is avoided, and two different evaporation temperatures are provided. The condensate expands in the throat part of the two-phase ejector 9 in an approximate isentropic manner, the expansion work in the throttling process is fully recovered, and the two-phase ejector 9 improves the suction pressure of the scroll compressor 13 through the recovery throttling loss. When the solar radiation intensity is weaker, the scroll compressor 13 can effectively improve the pressure of the secondary fluid inlet of the steam ejector 6, improve the performance of the steam ejector 6, avoid the condition of working disorder, improve the performance of the device and the solar energy utilization rate, and improve the stability of the system operation.
The above solar injection and compression coupled dual-evaporation refrigerating device shown in fig. 1 is a specific embodiment of the present invention, and it has been demonstrated that the substantial features and the progress of the present invention can be modified according to the actual use requirements, and the same modifications in the aspects of shape, structure, etc. are all listed in the protection scope of the present solution.
Claims (6)
1. Solar energy sprays and compression coupling's two evaporation refrigerating plant, including solar energy collection subsystem and injection compression coupling refrigeration subsystem, its characterized in that: in the solar heat collection subsystem, an outlet of a solar heat collector (1) is connected with a high-temperature water inlet a end of a heat storage water tank (2), a low-temperature water outlet b end of the heat storage water tank (2) is connected with an inlet of a first water pump (3), an outlet of the first water pump (3) is connected with an inlet of the solar heat collector (1), a high-temperature water outlet d end of the heat storage water tank (2) is connected with a hot water side inlet a end of a generator (5), a hot water side outlet b end of the generator (5) is connected with an inlet of a second water pump (4), and an outlet of the second water pump (4) is connected with a low-temperature water inlet c end of the heat storage water tank (2); in the injection compression coupling refrigeration subsystem, the end d of the refrigerant side outlet of a generator (5) is connected with the end a of the working fluid inlet of a steam ejector (6), the end c of the outlet of the steam ejector (6) is connected with the inlet of a condenser (7) through a first electromagnetic valve (14), the outlet of the condenser (7) is divided into three paths, the first path is connected with the inlet of a working fluid pump (8) through a second electromagnetic valve (15), the outlet of the working fluid pump (8) is connected with the end c of the refrigerant side inlet of the generator (5), the second path is connected with the end a of the working fluid inlet of a two-phase ejector (9), the third path is connected with the inlet of a low-temperature evaporator (11) through an expansion valve (10), the outlet of the low-temperature evaporator (11) is connected with the end b of an injection fluid inlet of the two-phase ejector (9), the end c of the outlet of the two-phase ejector (9) is connected with the inlet of a high-temperature evaporator (12), the outlet of the high-temperature evaporator (12) is divided into two paths, one path is connected with the b end of the injection fluid inlet of the steam ejector (6) through a third electromagnetic valve (16), the other path is connected with the inlet of the scroll compressor (13) through a fourth electromagnetic valve (17), the outlet of the scroll compressor (13) is divided into two paths, the other path is connected with the b end of the injection fluid inlet of the steam ejector (6) through a fifth electromagnetic valve (18), and the other path is connected with the inlet of the condenser (7) through a sixth electromagnetic valve (19).
2. The solar-spray and compression coupled dual evaporative cooling device of claim 1, wherein: the working fluid inlet, the injection fluid inlet and the steam ejector (6) outlet of the steam ejector (6) are all gaseous refrigerants, and an isobaric mixing ejector is adopted; the working fluid inlet of the two-phase ejector (9) is liquid refrigerant, the injection fluid inlet is gaseous refrigerant, the outlet of the two-phase ejector (9) is two-phase wet steam, and an equal-area mixing ejector is adopted.
3. The solar-spray and compression coupled dual evaporative cooling device of claim 1, wherein: the device adopts low-pressure refrigerant, including R134a, environmental protection refrigerant R1234yf or R1234 ze.
4. The solar-spray and compression coupled dual evaporative cooling device of claim 1, wherein: the working medium pump (8) is a plunger pump with continuously adjustable flow, the expansion valve (10) is an electromagnetic expansion valve with adjustable opening, and the scroll compressor (13) is a variable frequency compressor.
5. The solar-spray and compression coupled dual evaporative cooling device of claim 1, wherein: the outlet of the condenser (7) is provided with a liquid storage device.
6. The solar-spray and compression coupled dual evaporative cooling device of claim 1, wherein: an oil separator is arranged at the outlet of the scroll compressor (13).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623620A (en) * | 2022-02-28 | 2022-06-14 | 河南科技大学 | Double-temperature-position injection compression refrigeration cycle device with expander |
| CN115046328A (en) * | 2022-06-01 | 2022-09-13 | 嵊州市浙江工业大学创新研究院 | Injection compression refrigeration system adopting phase-change material to recycle waste heat of cement plant |
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2020
- 2020-12-02 CN CN202022894051.7U patent/CN214172602U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623620A (en) * | 2022-02-28 | 2022-06-14 | 河南科技大学 | Double-temperature-position injection compression refrigeration cycle device with expander |
| CN114623620B (en) * | 2022-02-28 | 2024-03-08 | 河南科技大学 | Double-temperature-position injection compression refrigeration cycle device with expander |
| CN115046328A (en) * | 2022-06-01 | 2022-09-13 | 嵊州市浙江工业大学创新研究院 | Injection compression refrigeration system adopting phase-change material to recycle waste heat of cement plant |
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