CN113310233A - Heat recovery composite refrigeration system - Google Patents
Heat recovery composite refrigeration system Download PDFInfo
- Publication number
- CN113310233A CN113310233A CN202110654332.1A CN202110654332A CN113310233A CN 113310233 A CN113310233 A CN 113310233A CN 202110654332 A CN202110654332 A CN 202110654332A CN 113310233 A CN113310233 A CN 113310233A
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- heat recovery
- fan
- refrigeration system
- solenoid valve
- compressor
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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
- F25B6/00—Compression machines, plants or systems, with several condenser circuits
- F25B6/02—Compression machines, plants or systems, with several condenser circuits arranged in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression 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
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
Abstract
The invention provides a heat recovery composite refrigeration system, comprising: a refrigeration compound circuit and a heat recovery circuit. When the outdoor temperature is lower than the Ta temperature, the fluorine pump part or the whole fluorine pump part replaces the compressor to run in the system, the annual running time of the compressor is saved, the service life of the compressor is prolonged, meanwhile, the power consumption of the system is about 1/10 of the power consumption of the compressor, the energy consumption of the system is greatly reduced, and when the system runs in a mixed mode, the refrigerant liquid flowing out of the first condenser is further supercooled in the fluorine pump, the possibility of generation of flash gas is reduced, the system fully utilizes a natural cold source, and the COP value is greatly improved compared with that of a conventional refrigeration system; in addition, the system has a heat recovery function, and the heat generated by the data center machine room in winter is transferred to the office by connecting a second condenser in parallel, so that the energy utilization efficiency is improved.
Description
Technical Field
The invention relates to the technical field of heating ventilation air conditioners, in particular to a heat recovery composite refrigeration system.
Background
The electronic equipment and the internet of things technology industry develop rapidly, the data center is used as an indispensable auxiliary facility in the field, the overall scale is in a rapid growth trend, the power consumption of a data center machine room is greatly improved, and the reduction of the energy consumption of the data center meets the urgent requirements of energy conservation and emission reduction at present.
At present, a data center cooling mode realizes vapor compression type refrigeration through a room-level precision air conditioner, and cooling is performed by directly introducing an outdoor natural cold source (fresh air/cold water) or indirectly obtaining cooling water as the cold source through equipment such as a cooling tower and the like. The former has the limitation that the compressor runs all year round, and the power consumption is large; the latter has high requirements on the quality of outdoor fresh air/cold water, the pretreatment process is complex, and the occupied area of equipment such as a cooling tower, a water pump and the like is large, so that the use of the equipment in a small data center is limited. In the aspect of waste heat recycling, a cold water heat pump unit is usually adopted, and domestic hot water is obtained by utilizing condensation heat of a data center so as to achieve the purposes of recycling low-grade waste heat and reducing energy consumption of the data center.
Disclosure of Invention
The invention provides a heat recovery composite refrigeration system, which integrates natural cooling and heat recovery and is used for solving the problems that the refrigeration system in the prior art is high in energy consumption and waste heat of a data center machine room is wasted.
The invention provides a heat recovery composite refrigeration system, comprising: a refrigeration compound circuit and a heat recovery circuit;
the refrigeration composite loop comprises an evaporator, a compressor, a first condenser, a fluorine pump, a first fan and a second fan, wherein an outlet of the evaporator is communicated with an air suction port of the compressor through a first electromagnetic valve, an air exhaust port of the compressor is communicated with an inlet of the first condenser through a second electromagnetic valve, an outlet of the first condenser is communicated with an inlet of the fluorine pump through a third electromagnetic valve, an outlet of the fluorine pump is communicated with an inlet of the evaporator, a first one-way valve is connected in parallel between the inlet of the first electromagnetic valve and the inlet of the second electromagnetic valve, a third one-way valve is connected in parallel between the inlet of the fluorine pump and the outlet of the fluorine pump, the first fan corresponds to the evaporator, and the second fan corresponds to the first condenser;
the heat recovery circuit is connected in parallel between the inlet of the second electromagnetic valve and the outlet of the third electromagnetic valve, the heat recovery circuit comprises a fourth electromagnetic valve, a second condenser and a fifth electromagnetic valve which are sequentially communicated, and the second condenser corresponds to a third fan.
According to the heat recovery composite refrigeration system provided by the invention, the heat recovery composite refrigeration system has a compressor mode, and under the condition that the heat recovery composite refrigeration system is in the compressor mode, the fourth electromagnetic valve, the third fan, the fifth electromagnetic valve and the fluorine pump are closed, and the first electromagnetic valve, the compressor, the second electromagnetic valve, the second fan, the third electromagnetic valve and the first fan are opened.
According to the heat recovery composite refrigeration system provided by the invention, the heat recovery composite refrigeration system has a fluorine pump mode, and when the heat recovery composite refrigeration system is in the fluorine pump mode, the first electromagnetic valve, the compressor, the fourth electromagnetic valve, the third fan and the fifth electromagnetic valve are closed, and the second electromagnetic valve, the second fan, the third electromagnetic valve, the fluorine pump and the first fan are opened.
According to the heat recovery composite refrigeration system provided by the invention, the heat recovery composite refrigeration system has a mixed mode, and when the heat recovery composite refrigeration system is in the mixed mode, the fourth electromagnetic valve, the third fan and the fifth electromagnetic valve are closed, and the first electromagnetic valve, the compressor, the second electromagnetic valve, the second fan, the third electromagnetic valve, the fluorine pump and the first fan are opened.
According to the heat recovery composite refrigeration system provided by the invention, the heat recovery composite refrigeration system has a heat recovery mode, and when the heat recovery composite refrigeration system is in the heat recovery mode, the first solenoid valve, the compressor, the second solenoid valve, the second fan and the third solenoid valve are closed, and the fourth solenoid valve, the third fan, the fifth solenoid valve, the fluorine pump and the first fan are opened.
According to the heat recovery composite refrigeration system provided by the invention, the outlet of the third electromagnetic valve is communicated with the inlet of the fluorine pump through the liquid storage tank.
According to the heat recovery composite refrigeration system provided by the invention, the liquid storage tank is communicated with the fluorine pump through the first pipeline, and the first pipeline is provided with the liquid viewing mirror.
According to the heat recovery composite refrigeration system provided by the invention, the fluorine pump is communicated with the evaporator through a second pipeline, and a filter and a throttler are arranged on the second pipeline.
According to the heat recovery composite refrigeration system provided by the invention, the exhaust port of the compressor is communicated with the inlet of the second electromagnetic valve through the second one-way valve, and the first one-way valve is connected in parallel between the inlet of the first electromagnetic valve and the outlet of the second one-way valve.
According to the heat recovery composite refrigeration system provided by the invention, the evaporator and the first fan are placed in a data center machine room and are close to electronic equipment; the second condenser and the third fan are used for being placed in a personnel office around the data center machine room.
The heat recovery composite refrigeration system provided by the invention realizes full utilization of an outdoor natural cold source, the power consumption of the fluorine pump is far lower than that of the compressor, the total energy consumption is reduced, the running time of the compressor is saved, and the service life of the compressor is prolonged; in addition, in cold winter, waste heat of the data center machine room is directly recovered in a parallel condenser mode and used for heating offices around the data center machine room, energy utilization efficiency is improved, and the problem of uneven distribution of refrigerants when a plurality of condensers are connected in series is solved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of the heat recovery compound refrigeration system provided by the present invention;
reference numerals:
1 a: an evaporator; 1 b: a first fan; 2: a first solenoid valve;
3: a compressor; 4: a first check valve; 5: a second one-way valve;
6: a second solenoid valve; 7 a: a first condenser; 7 b: a second fan;
8: a third electromagnetic valve; 9: a fourth solenoid valve; 10 a: a second condenser;
10 b: a third fan; 11: a fifth solenoid valve; 12: a liquid storage tank;
13: a liquid viewing mirror; 14: a fluorine pump; 15: a third check valve;
16: a filter; 17: a restrictor; 18: a data center machine room;
19: an office.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The heat recovery composite refrigeration system of the present invention is described below with reference to fig. 1.
As shown in fig. 1, the heat recovery composite refrigeration system according to the embodiment of the present invention includes: a refrigeration compound circuit and a heat recovery circuit.
The refrigeration composite loop comprises an evaporator 1a, a compressor 3, a first condenser 7a, a fluorine pump 14, a first fan 1b and a second fan 7b, wherein an outlet of the evaporator 1a is communicated with a suction port of the compressor 3 through a first electromagnetic valve 2, an exhaust port of the compressor 3 is communicated with an inlet of the first condenser 7a through a second electromagnetic valve 6, an outlet of the first condenser 7a is communicated with an inlet of the fluorine pump 14 through a third electromagnetic valve 8, an outlet of the fluorine pump 14 is communicated with an inlet of the evaporator 1a, a first check valve 4 is connected in parallel between the inlet of the first electromagnetic valve 2 and the inlet of the second electromagnetic valve 6, a third check valve 15 is connected in parallel between the inlet of the fluorine pump 14 and the outlet of the fluorine pump 14, the first fan 1b corresponds to the evaporator 1a, and the second fan 7b corresponds to the first condenser 7 a;
a heat recovery loop is connected in parallel between the inlet of the second electromagnetic valve 6 and the outlet of the third electromagnetic valve 8, the heat recovery loop comprises a fourth electromagnetic valve 9, a second condenser 10a and a fifth electromagnetic valve 11 which are sequentially communicated, and the second condenser 10a corresponds to a third fan 10 b.
In an alternative embodiment, the outlet of the third solenoid valve 8 communicates with the inlet of the fluorine pump 14 via the reservoir 12. The liquid storage tank 12 is communicated with the fluorine pump 14 through a first pipeline, the first pipeline is provided with a liquid viewing mirror 13, and the liquid viewing mirror 13 can be horizontally or vertically arranged on the first pipeline.
In an alternative embodiment, the evaporator 1a, the first condenser 7a and the second condenser 10a are side-blown or top-blown finned tube heat exchangers.
In an alternative embodiment, the first, second and third check valves 4, 5, 15 may be straight-through check valves and may be mounted on the pipeline by screwing or welding.
In an alternative embodiment, the fluorine pump 14 communicates with the evaporator 1a via a second line, which is provided with a filter 16 and a restriction 17. Wherein, the filter 16 is a dry filter, and the throttler 17 is one or a combination of two of a thermostatic expansion valve and an electronic expansion valve.
In an alternative embodiment, the exhaust port of the compressor 3 is communicated with the inlet of the second solenoid valve 6 through a second check valve 5, and a first check valve 4 is connected in parallel between the inlet of the first solenoid valve 2 and the outlet of the second check valve 5. Wherein the first check valve 4 and the second check valve 5 are installed in the same direction as the fluid flow direction.
In an alternative embodiment, the evaporator 1a and the first fan 1b are used to be placed in the data center room 18 and close to the electronic equipment, which can generate a large amount of heat; the second condenser 10a and the third fan 10b are intended to be placed in a personnel office 19 around a data centre room 18.
The heat recovery composite refrigeration system of the embodiment of the invention realizes the full utilization of an outdoor natural cold source, the power consumption of the fluorine pump 14 is far lower than that of the compressor 3, the total energy consumption is reduced, the running time of the compressor 3 is saved, and the service life of the compressor 3 is prolonged; in addition, in cold winter, waste heat of the data center machine room 18 is directly recovered in a parallel condenser mode and used for heating offices 19 around the data center machine room 18, energy utilization efficiency is improved, and the problem of uneven distribution of refrigerants when a plurality of condensers are operated in series is solved.
In an alternative embodiment, the heat recovery composite refrigeration system has a compressor mode, and when the outdoor temperature is higher than the temperature of Ta, the heat recovery composite refrigeration system starts the compressor mode.
Under the condition that the heat recovery composite refrigeration system is in the compressor mode, the fourth electromagnetic valve 9, the third fan 10b, the fifth electromagnetic valve 11 and the fluorine pump 14 are closed, and the first electromagnetic valve 2, the compressor 3, the second electromagnetic valve 6, the second fan 7b, the third electromagnetic valve 8 and the first fan 1b are opened.
The low-temperature low-pressure refrigerant vapor flowing out of the evaporator 1a is heated and pressurized by the compressor 3 and then enters the first condenser 7a for condensation and heat release, and the supercooled liquid flowing out of the first condenser 7a sequentially passes through the liquid storage tank 12, the liquid sight glass 13, the third one-way valve 15 and the filter 16 and then enters the throttler 17 for throttling, and then returns to the evaporator 1a for evaporation, so that the data center machine room 18 is refrigerated. The first check valve 4 is used for preventing the high-temperature and high-pressure refrigerant flowing out of the compressor 3 from flowing back to the compressor 3, and preventing the compressor 3 from being damaged due to the fact that the temperature of the refrigerant flowing out of the compressor 3 is too high.
In an alternative embodiment, the heat recovery hybrid refrigeration system has a fluorine pump mode that is enabled when the outdoor temperature is below Tb and the office 19 temperature is above Tc.
Under the condition that the heat recovery composite refrigeration system is in the fluorine pump mode, the first electromagnetic valve 2, the compressor 3, the fourth electromagnetic valve 9, the third fan 10b and the fifth electromagnetic valve 11 are closed, and the second electromagnetic valve 6, the second fan 7b, the third electromagnetic valve 8, the fluorine pump 14 and the first fan 1b are opened.
The superheated gas flowing out of the evaporator 1a enters the first condenser 7a through the first one-way valve 4, is fully condensed under the action of an outdoor natural cold source, the supercooled liquid flowing out of the first condenser 7a is subjected to pressure boosting of the fluorine pump 14, then enters the throttler 17 for throttling, then returns to the evaporator 1a for evaporation, refrigerates for the data center machine room 18, and the cycle is repeated. Closing the fifth electromagnetic valve 11 functions to prevent the refrigerant liquid flowing out of the first condenser 7a from flowing into the second condenser 10a to cause accumulation in the second condenser 10 a. In the mode, the fluorine pump 14 raises the pressure of the liquid refrigerant at the outlet of the first condenser 7a, thereby supplementing the driving force of the circulation and ensuring the normal operation of the circulation.
In an alternative embodiment, the heat recovery composite refrigeration system has a hybrid mode that is turned on when the outdoor temperature is between Tb and Ta temperatures.
Under the condition that the heat recovery composite refrigeration system is in the mixed mode, the fourth electromagnetic valve 9, the third fan 10b and the fifth electromagnetic valve 11 are closed, and the first electromagnetic valve 2, the compressor 3, the second electromagnetic valve 6, the second fan 7b, the third electromagnetic valve 8, the fluorine pump 14 and the first fan 1b are opened.
The superheated gas flowing out of the evaporator 1a enters the compressor 3 to be heated and pressurized, then enters the first condenser 7a to be condensed and release heat, then enters the fluorine pump 14 to be further pressurized and subcooled, enters the throttling device 17 to be throttled, then returns to the evaporator 1a, and the cycle is repeated.
In an alternative embodiment, the heat recovery combined refrigeration system has a heat recovery mode that is enabled when the outdoor temperature is below Tb and the office 19 temperature is below Tc.
Under the condition that the heat recovery composite refrigeration system is in the heat recovery mode, the first electromagnetic valve 2, the compressor 3, the second electromagnetic valve 6, the second fan 7b and the third electromagnetic valve 8 are closed, and the fourth electromagnetic valve 9, the third fan 10b, the fifth electromagnetic valve 11, the fluorine pump 14 and the first fan 1b are opened.
The superheated gas flowing out of the evaporator 1a enters the second condenser 10a through the first one-way valve 4 for condensation, the heat is released to supply heat for an office 19, the supercooled liquid flowing out of the second condenser 10a is subjected to pressure boosting through the fluorine pump 14, then enters the throttler 17 for throttling, then returns to the evaporator 1a for evaporation, refrigerates for the data center machine room 18, and the process is circulated. Once the temperature of the monitoring personnel office 19 exceeds Tc, the system immediately stops supplying heat to the office 19 and the cyclic operation mode is switched to the fluorine pump mode.
In a conventional air conditioning refrigeration system, the data center machine room 18 needs to continuously refrigerate, and the compressor 3 consumes power all the year round. In the heat recovery composite refrigeration system of the embodiment of the invention, when the outdoor temperature is lower than the temperature of Ta, the fluorine pump 14 partially or completely replaces the compressor 3 to run in the system, the annual running time of the compressor 3 is saved, the service life of the compressor 3 is prolonged, meanwhile, because the power consumption of the fluorine pump 14 is about 1/10 of the power consumption of the compressor 3, the energy consumption of the system is greatly reduced, and when the system runs in a mixed mode, the refrigerant liquid flowing out of the first condenser 7a is further supercooled in the fluorine pump 14, the possibility of generation of flash gas is reduced, the system fully utilizes a natural cold source, and the COP value is greatly improved compared with that of a conventional refrigeration system; in addition, the system has a heat recovery function, and the heat generated by the data center machine room 18 in winter is transferred to the office 19 by connecting the second condenser 10a in parallel, so that the energy utilization efficiency is improved.
In the four-mode switching operation process of the system, the refrigerant only flows through the first condenser 7a or the second condenser 10a all the time, the problem of uneven distribution existing in the serial operation process of a plurality of condensers is solved, local heat exchange is insufficient due to uneven distribution of the refrigerant, the heat exchange effect is reduced, and therefore the performance of the whole system is affected.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A heat recovery compound refrigeration system, comprising: a refrigeration compound circuit and a heat recovery circuit;
the refrigeration composite loop comprises an evaporator, a compressor, a first condenser, a fluorine pump, a first fan and a second fan, wherein an outlet of the evaporator is communicated with an air suction port of the compressor through a first electromagnetic valve, an air exhaust port of the compressor is communicated with an inlet of the first condenser through a second electromagnetic valve, an outlet of the first condenser is communicated with an inlet of the fluorine pump through a third electromagnetic valve, an outlet of the fluorine pump is communicated with an inlet of the evaporator, a first one-way valve is connected in parallel between the inlet of the first electromagnetic valve and the inlet of the second electromagnetic valve, a third one-way valve is connected in parallel between the inlet of the fluorine pump and the outlet of the fluorine pump, the first fan corresponds to the evaporator, and the second fan corresponds to the first condenser;
the heat recovery circuit is connected in parallel between the inlet of the second electromagnetic valve and the outlet of the third electromagnetic valve, the heat recovery circuit comprises a fourth electromagnetic valve, a second condenser and a fifth electromagnetic valve which are sequentially communicated, and the second condenser corresponds to a third fan.
2. The heat recovery compound refrigeration system according to claim 1, wherein the heat recovery compound refrigeration system has a compressor mode, and in a case where the heat recovery compound refrigeration system is in the compressor mode, the fourth solenoid valve, the third fan, the fifth solenoid valve, and the fluorine pump are closed, and the first solenoid valve, the compressor, the second solenoid valve, the second fan, the third solenoid valve, and the first fan are opened.
3. The heat recovery compound refrigeration system as claimed in claim 1, wherein the heat recovery compound refrigeration system has a fluorine pump mode, and in a case where the heat recovery compound refrigeration system is in the fluorine pump mode, the first solenoid valve, the compressor, the fourth solenoid valve, the third fan, and the fifth solenoid valve are closed, and the second solenoid valve, the second fan, the third solenoid valve, the fluorine pump, and the first fan are opened.
4. The heat recovery composite refrigeration system according to claim 1, wherein the heat recovery composite refrigeration system has a mixed mode, and in a case where the heat recovery composite refrigeration system is in the mixed mode, the fourth solenoid valve, the third fan, and the fifth solenoid valve are closed, and the first solenoid valve, the compressor, the second solenoid valve, the second fan, the third solenoid valve, the fluorine pump, and the first fan are opened.
5. The heat recovery compound refrigeration system according to claim 1, wherein the heat recovery compound refrigeration system has a heat recovery mode, and in a case where the heat recovery compound refrigeration system is in the heat recovery mode, the first solenoid valve, the compressor, the second solenoid valve, the second fan, and the third solenoid valve are closed, and the fourth solenoid valve, the third fan, the fifth solenoid valve, the fluorine pump, and the first fan are opened.
6. The heat recovery composite refrigeration system according to any one of claims 1 to 5, wherein an outlet of the third solenoid valve is communicated with an inlet of the fluorine pump through a liquid storage tank.
7. The heat recovery composite refrigeration system of claim 6, wherein the liquid storage tank is communicated with the fluorine pump through a first pipeline, and a liquid viewing mirror is arranged on the first pipeline.
8. The heat recovery composite refrigeration system according to any one of claims 1 to 5, wherein the fluorine pump is communicated with the evaporator through a second pipeline, and a filter and a flow restrictor are arranged on the second pipeline.
9. The heat recovery composite refrigeration system according to any one of claims 1 to 5, wherein the discharge port of the compressor is communicated with the inlet of the second solenoid valve through a second check valve, and the first check valve is connected in parallel between the inlet of the first solenoid valve and the outlet of the second check valve.
10. The heat recovery compound refrigeration system of any of claims 1 to 5, wherein the evaporator and the first fan are configured to be placed in a data center room and proximate to an electronic device; the second condenser and the third fan are used for being placed in a personnel office around the data center machine room.
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| CN202110654332.1A CN113310233A (en) | 2021-06-11 | 2021-06-11 | Heat recovery composite refrigeration system |
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| CN202110654332.1A CN113310233A (en) | 2021-06-11 | 2021-06-11 | Heat recovery composite refrigeration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623496A (en) * | 2022-02-28 | 2022-06-14 | 北京百度网讯科技有限公司 | Heat recovery type fresh air handling unit and data center air conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623496A (en) * | 2022-02-28 | 2022-06-14 | 北京百度网讯科技有限公司 | Heat recovery type fresh air handling unit and data center air conditioning system |
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