CN113686038A - Intelligent cold accumulation refrigerating system and application thereof - Google Patents
Intelligent cold accumulation refrigerating system and application thereof Download PDFInfo
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- CN113686038A CN113686038A CN202110994083.0A CN202110994083A CN113686038A CN 113686038 A CN113686038 A CN 113686038A CN 202110994083 A CN202110994083 A CN 202110994083A CN 113686038 A CN113686038 A CN 113686038A
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- 238000009825 accumulation Methods 0.000 title claims abstract description 57
- 238000005057 refrigeration Methods 0.000 claims abstract description 76
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 239000011552 falling film Substances 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 abstract description 32
- 238000001816 cooling Methods 0.000 abstract description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 16
- 229910002092 carbon dioxide Inorganic materials 0.000 description 8
- 239000001569 carbon dioxide Substances 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 239000002826 coolant Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 150000008282 halocarbons Chemical class 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000010792 warming Methods 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
-
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The application discloses intelligence cold-storage refrigerating system, including first refrigerating system and second refrigerating system, realize the heat exchange through middle heat exchanger between first refrigerating system and the second refrigerating system, install first liquid temperature sensor in middle heat exchanger exit among the first refrigerating system, second refrigerating system is including the cold-storage device, cold-storage device internally mounted has the liquid level detection unit, second liquid temperature sensor is installed in the cold-storage device exit, install temperature and humidity sensor in the refrigeration space of second refrigerating system. When the temperature of the refrigerating space of the second refrigerating system or the outlet of the cold accumulation device is higher than the target value range, carrying out secondary cooling on the secondary refrigerant in the cold accumulation device; when the liquid level in the cold accumulation device is lower than a target value or the outlet temperature of the first refrigeration system corresponding to the intermediate heat exchanger is lower than the target value, the first refrigeration system is loaded; and when the total temperature of the secondary refrigerant in the cold accumulation device is lower than the target value range, the load reduction treatment is carried out on the first refrigerating system.
Description
Technical Field
The application relates to the technical field of refrigeration, in particular to an intelligent cold accumulation refrigeration system and application thereof.
Background
Most of the current refrigeration systems use direct expansion or barrel pump feed as the refrigeration principle, and the systems mainly use ammonia or halogenated hydrocarbon and mixtures thereof as the refrigerant. The use of ammonia as a refrigerant is hazardous and flammable, and the use of halogenated hydrocarbons and mixtures thereof as refrigerants has a negative impact on climate warming.
In this context, a number of alternatives have been derived, one of which is the use of natural refrigerants such as carbon dioxide in transcritical applications. However, the application has the problems of large pressure at the condensation end and the evaporation end, high-pressure equipment and parts, high power consumption and the like, so that the application cannot effectively replace the current refrigerant to become a mainstream refrigeration mode.
In addition, there are indirect systems that use carbon dioxide or glycols and mixtures thereof as the second refrigerant (coolant) and ammonia or halogenated hydrocarbons and mixtures thereof as the first refrigerant. The system can continuously supply the coolant with stable temperature for refrigeration or heating in application. But has not been widely used because of its complex system and limited energy saving.
Disclosure of Invention
In order to make the control system of the indirect refrigeration system more intelligent and simpler and simultaneously make the secondary refrigerant applied by the system cool as required so as to reduce the energy consumption of the whole system, the application provides an intelligent cool storage refrigeration system and the application thereof.
On the one hand, the intelligent cold accumulation refrigerating system provided by the application is realized through the following technical scheme.
The intelligent cold-storage refrigerating system comprises: the first refrigeration system and the second refrigeration system realize heat exchange through an intermediate heat exchanger, the second refrigeration system comprises a cold accumulation device, a first pump body and an evaporator, the cold accumulation device and the first pump body are communicated through a cold carrying pipeline, meanwhile, the cold carrying pipeline is communicated to the intermediate heat exchanger to form a loop, an electric three-way valve is connected between the evaporator and the cold accumulation device, and a third branch of the electric three-way valve is communicated between the evaporator and the intermediate heat exchanger;
a first liquid temperature sensor is arranged at an outlet of the intermediate heat exchanger corresponding to the first refrigerating system, or on a connecting pipeline between the intermediate heat exchanger and the cold accumulation device, or at an inlet end of the cold accumulation device;
a temperature and humidity sensor is arranged in the refrigerating space of the second refrigerating system;
a second liquid temperature sensor is arranged at the outlet of the cold accumulation device, on a connecting pipeline between the cold accumulation device and the evaporator or at the inlet end of the first pump body;
a liquid level detection unit is arranged in the cold accumulation device;
the first liquid temperature sensor, the second liquid temperature sensor, the liquid level detection unit and the temperature and humidity sensor are all connected to a controller, and control loops of the first refrigeration system and the second refrigeration system are connected to the controller.
By adopting the technical scheme, the first liquid temperature sensor is used for monitoring whether the outlet temperature of the intermediate heat exchanger deviates from a preset range or not and is used as one of core parameters for controlling the first refrigerating system; the temperature and humidity sensor is used for detecting environmental data of a refrigerating space of the second refrigerating system so as to judge the temperature of the secondary refrigerant supplied by the cold accumulation device; the second liquid temperature sensor is used for monitoring whether the temperature of the medium output by the cold accumulation device deviates from a preset range, so as to determine whether secondary refrigeration is carried out on the secondary refrigerant in the cold accumulation device;
when the temperature of the refrigerating space of the second refrigerating system or the outlet of the cold accumulation device is higher than the target value range, carrying out secondary cooling on the secondary refrigerant in the cold accumulation device; when the liquid level in the cold accumulation device is lower than a target value or the outlet temperature of the first refrigeration system corresponding to the intermediate heat exchanger is lower than the target value, loading the first refrigeration system; when the temperature in the refrigerating space of the second refrigerating system or the outlet temperature of the cold accumulation device is equal to the target value range, stopping cooling the secondary refrigerant of the cold accumulation device; and when the total temperature of the secondary refrigerant in the cold accumulation device is lower than the target value range, the load reduction treatment is carried out on the first refrigerating system.
In conclusion, the cold accumulation is carried out according to the requirement so as to reduce the energy consumption of the whole system, so that the control system of the indirect refrigeration system is more intelligent and simpler.
In some embodiments, a pressure sensor is installed at an outlet of the intermediate heat exchanger corresponding to the first refrigeration system, and the pressure sensor is connected to the controller.
By adopting the technical scheme, when carbon dioxide is used as the secondary refrigerant, the secondary refrigerant is used for judging whether the pressure is too high or not, and whether the use risk and the ice blockage phenomenon exist or not.
In some embodiments, the first refrigeration system comprises a compressor unit, a condenser and an expansion valve, the compressor unit, the condenser and the expansion valve are communicated through a cold carrying pipeline, and meanwhile, the cold carrying pipeline is communicated to the intermediate heat exchanger to form a loop.
In some embodiments, the cold carrying pipe of the first refrigeration system is further provided with a solenoid valve.
In some embodiments, the intermediate heat exchanger is a plate heat exchanger or a falling film heat exchanger.
In some embodiments, a first heat exchanger is further installed in the loop of the first refrigeration system, the first heat exchanger is simultaneously communicated with an evaporator in the second refrigeration system through a cold carrying pipeline, and a second pump body is installed on the cold carrying pipeline which is communicated with the first heat exchanger and the evaporator.
By adopting the technical scheme, when the evaporator of the second refrigerating system is defrosted, the evaporator uses secondary refrigerant as a defrosting medium, the heat recovery and intermediate heat exchanger of the compressor unit as a first heating system, and the cold accumulation device, the first pump body, the electric three-way valve and the evaporator as a second heating system.
In some embodiments, the solenoid valve is disposed adjacent to the expansion valve, and a check valve is coupled in parallel with the solenoid valve and the expansion valve, the check valve controlling a fluid flow direction opposite to a fluid flow direction controlled by the solenoid valve.
In some embodiments, the intermediate heat exchanger is a plate heat exchanger.
In a second aspect, the application also discloses an application of the intelligent cold accumulation refrigeration system, which comprises the following technical scheme:
the application of the intelligent cold accumulation refrigeration system comprises the steps that the first refrigeration system is loaded to achieve 100% -200% of the normal power consumption requirement in the electricity fee valley period, and the first refrigeration system is reduced in load in the electricity fee peak balancing period to achieve 0% -100% of the normal power consumption requirement.
In some embodiments, the first refrigeration system is derated when the level of cold storage device in the second refrigeration system reaches 90% to 100%.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent cold accumulation refrigeration system provided in embodiment 1 of the present application;
fig. 2 is a schematic structural diagram of an intelligent cold-storage refrigeration system provided in embodiment 2 of the present application;
fig. 3 is a schematic structural diagram of an intelligent cold storage refrigeration system provided in embodiment 3 of the present application.
In the figure: 01. a cold carrying duct; 1. a first refrigeration system; 2. a second refrigeration system; 20. a temperature and humidity sensor; 3. an intermediate heat exchanger; 4. a first liquid temperature sensor; 5. a pressure sensor; 21. a cold storage device; 211. a liquid level detection unit; 212. a second liquid temperature sensor; 11. a compressor unit; 12. a condenser; 13. an expansion valve; 14. an electromagnetic valve; 22. a first pump body; 23. an evaporator; 24. an electric three-way valve; 15. a first heat exchanger; 16. a second pump body; 17. a one-way valve.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The present application first discloses an intelligent cold storage refrigeration system.
Example 1
The intelligent cold-storage refrigeration system disclosed in embodiment 1 of the present application is shown in fig. 1, and includes a first refrigeration system 1 and a second refrigeration system 2, and heat exchange is realized between the first refrigeration system 1 and the second refrigeration system 2 through an intermediate heat exchanger 3, and in this embodiment of the present application, carbon dioxide is used as a secondary refrigerant, and therefore, the intermediate heat exchanger 3 is a plate heat exchanger.
The first refrigeration system 1 comprises a compressor unit 11, a condenser 12 and an expansion valve 13, wherein the expansion valve 13, the compressor unit 11 and the condenser 12 are communicated through a cold carrying pipeline 01, meanwhile, the cold carrying pipeline 01 is communicated to an intermediate heat exchanger 3 to form a loop, the intermediate heat exchanger 3 is positioned between the expansion valve 13 and the condenser 12, meanwhile, an electromagnetic valve 14 is further installed on the expansion valve 13 and the compressor unit 11 for quality inspection, the electromagnetic valve 14 is a one-way electromagnetic valve, and the direction of fluid flows from the condenser 12 to the intermediate heat exchanger 3.
The second refrigeration system 2 comprises a cold accumulation device 21, a first pump body 22 and an evaporator 23, the cold accumulation device 21 and the first pump body 22 are sequentially communicated through a cold carrying pipeline 01, meanwhile, the cold carrying pipeline 01 is communicated to an intermediate heat exchanger 3 to form a loop, the intermediate heat exchanger 3 is positioned between the first pump body 22 and the evaporator 23, an electric three-way valve 24 is connected between the evaporator 23 and the cold accumulation device 21, and a third branch of the electric three-way valve 24 is communicated between the evaporator 23 and the intermediate heat exchanger 3.
First liquid temperature sensor 4 and pressure sensor 5 are installed in 3 exits of middle heat exchanger in first refrigerating system 1, cold-storage device 21 internally mounted has liquid level detection unit 211, second liquid temperature sensor 212 is installed in 21 exits of cold-storage device, install temperature and humidity sensor 20 in the refrigeration space of second refrigerating system 2, first liquid temperature sensor 4, pressure sensor 5, liquid level detection unit 211, second liquid temperature sensor 212 and temperature and humidity sensor 20 all are connected to a controller, the control circuit of first refrigerating system 1 and second refrigerating system 2 is connected to the controller.
The temperature/humidity sensor 20 detects environmental data of the refrigerating space of the second refrigerating system 2, and determines the temperature of the coolant supplied from the cold storage device 21 using the detection data of the temperature/humidity sensor 20 in the refrigerating space of the second refrigerating system 2. When the temperature of the refrigerating space of the second refrigerating system 2 or the outlet of the cold storage device 21 is higher than the target value range, starting the electric three-way valve 24, communicating the channel between the cold storage device 21 and the intermediate heat exchanger 3, closing the channel between the cold storage device 21 and the evaporator 23, conveying the secondary refrigerant to the intermediate heat exchanger 3, and carrying out secondary cooling on the secondary refrigerant in the cold storage device 21; when the liquid level is lower than a target value or the outlet temperature of the intermediate heat exchanger 3 is lower than a target value, the compressor unit 11 and the condenser 12 in the first refrigeration system 1 are loaded; when the temperature in the refrigerating space of the second refrigerating system 2 or the outlet temperature of the cold accumulation device 21 is equal to the target value range, the channel from the cold accumulation device 21 to the intermediate heat exchanger 3 is closed, and the channel from the cold accumulation device 21 to the evaporator 23 is communicated; when the total temperature of the refrigerating medium in the cold accumulation device 21 is lower than the target value range, the load reduction treatment is performed on the compressor unit 11 and the condenser 12 in the first refrigeration system 1.
The first liquid temperature sensor 4 is configured to monitor whether the outlet temperature of the intermediate heat exchanger 3 deviates from a preset range, and is used as one of core parameters for controlling the first refrigeration system 1, so that the first liquid temperature sensor 4 may be installed outside the outlet of the intermediate heat exchanger 3 corresponding to the first refrigeration system 1, or may be installed on a connection pipeline between the intermediate heat exchanger 3 and the cold storage device 21, or on an inlet end of the cold storage device 21 in other embodiments. The second liquid temperature sensor 212 is used to monitor whether the temperature of the medium output from the cold storage device 21 deviates from the preset range, so as to determine whether to perform secondary cooling on the coolant in the cold storage device 21, therefore, the second liquid temperature sensor 212 may be installed on a connection pipeline between the cold storage device 21 and the evaporator 23, or on the inlet end of the evaporator 23, besides the outlet of the cold storage device 21.
Example 2
The intelligent cold accumulation refrigeration system provided by the embodiment 2 of the application is basically the same as that in the embodiment 1, and the difference is that:
as shown in fig. 2, a first heat exchanger 15 is further installed in the loop of the first refrigeration system 1, the first heat exchanger 15 is simultaneously communicated with an evaporator 23 in the second refrigeration system 2 through a cold carrying pipeline 01, and a second pump body 16 is installed on the cold carrying pipeline 01 which is communicated with the first heat exchanger 15 and the evaporator 23. The solenoid valve 14 is disposed adjacent to the expansion valve 13, and the solenoid valve 14 and the expansion valve 13 are connected in parallel with a check valve 17, and the check valve 17 controls a fluid flow direction opposite to a fluid flow direction controlled by the solenoid valve 14.
The embodiment of the application can be used when defrosting the evaporator 23, the intelligent cold accumulation refrigeration system needs to adjust the power of the first pump body 22 to reduce the flow rate and exergy loss of the coolant at the system terminal, if the evaporator 23 uses the coolant as a defrosting medium, the heat recovery of the compressor unit 11 and the intermediate heat exchanger 3 should be used as a first heating system, that is, the first heat exchanger 15, the second pump body 16 and the evaporator 23 are used as a first heating system, the cold accumulation device 21, the first pump body 22, the electric three-way valve 24, the evaporator 23 are used as a second heating system, and at this time, the electric three-way valve 24 communicates the evaporator 23 and the cold accumulation device 21.
Example 3
As shown in fig. 3, the intelligent cold-storage refrigeration system disclosed in embodiment 3 of the present application is substantially the same as embodiment 1, except that the intermediate heat exchanger 3 is a falling film heat exchanger.
The falling film heat exchanger can be used in a refrigeration system using a dihydric alcohol secondary refrigerant and a brine secondary refrigerant, and has the main advantages of being capable of being combined with the cold accumulation device 21 so as to save floor space and save part of pipe group valves.
The plate heat exchanger can be applied to a refrigerating system using the two secondary refrigerants and carbon dioxide as the secondary refrigerants. The plate heat exchanger has the main advantages of high pressure bearing capacity, high uniformity and suitability for the use environment of secondary refrigerant phase change.
The application also discloses the application of the intelligent cold accumulation refrigerating system, the first refrigerating system 1 can reach 100% -200%, preferably 125% -140% of the normal power consumption requirement by loading at the electricity fee valley time period, the first refrigerating system 1 can reach 0% -100%, preferably 0% -75% of the normal power consumption requirement by load reduction at the electricity fee peak balancing time period, and the first refrigerating system 1 can be subjected to load reduction when the liquid level of the cold accumulation device 21 in the second refrigerating system 2 reaches 90% -100%.
Secondly, the intelligent cold-storage refrigeration system provided by the application can use carbon dioxide as a secondary refrigerant, uses dihydric alcohol and a mixture thereof as the secondary refrigerant, and when alcohols are used as the secondary refrigerant, the secondary refrigerant system can be communicated with the atmosphere, but the secondary refrigerant can absorb moisture to cause component dilution and freezing point rising when being communicated with the atmosphere, and the lowest pressure value of the secondary refrigerant system is the gauge pressure of 0 bar. When the carbon dioxide is used as a refrigerating medium, the carbon dioxide cannot be communicated with the atmosphere, and the design pressure is 60 bar.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. Intelligence cold-storage refrigerating system, its characterized in that includes: the refrigeration system comprises a first refrigeration system (1) and a second refrigeration system (2), wherein heat exchange is realized between the first refrigeration system (1) and the second refrigeration system (2) through an intermediate heat exchanger (3), the second refrigeration system (2) comprises a cold accumulation device (21), a first pump body (22) and an evaporator (23), the cold accumulation device (21) and the first pump body (22) are communicated through a cold carrying pipeline (01), meanwhile, the cold carrying pipeline (01) is communicated to the intermediate heat exchanger (3) to form a loop, an electric three-way valve (24) is connected between the evaporator (23) and the cold accumulation device (21), and a third branch of the electric three-way valve (24) is communicated between the evaporator (23) and the intermediate heat exchanger (3);
a first liquid temperature sensor (4) is arranged at an outlet of the intermediate heat exchanger (3) corresponding to the first refrigeration system (1), or on a connecting pipeline between the intermediate heat exchanger (3) and the cold accumulation device (21), or at an inlet end of the cold accumulation device (21);
a temperature and humidity sensor (20) is arranged in a refrigerating space of the second refrigerating system (2);
a second liquid temperature sensor (212) is arranged at the outlet of the cold accumulation device (21), or on a connecting pipeline between the cold accumulation device (21) and the evaporator (23), or at the inlet end of the first pump body (22);
a liquid level detection unit (211) is arranged in the cold accumulation device (21);
the first liquid temperature sensor (4), the second liquid temperature sensor (212), the liquid level detection unit (211) and the temperature and humidity sensor (20) are all connected to a controller, and control loops of the first refrigeration system (1) and the second refrigeration system (2) are connected to the controller.
2. The intelligent cold-storage refrigeration system according to claim 1, characterized in that a pressure sensor (5) is installed at the outlet of the intermediate heat exchanger (3) corresponding to the first refrigeration system (1), the pressure sensor (5) being connected to the controller.
3. The intelligent cold-storage refrigerating system according to claim 1 or 2, characterized in that the first refrigerating system (1) comprises a compressor set (11), a condenser (12) and an expansion valve (13), the compressor set (11), the condenser (12) and the expansion valve (13) are communicated through a cold-carrying pipe (01), and meanwhile, the cold-carrying pipe (01) is communicated to the intermediate heat exchanger (3) to form a loop.
4. The intelligent cold-storage refrigerating system according to claim 3, characterized in that the cold-carrying pipe (01) of the first refrigerating system (1) is also provided with a solenoid valve (14).
5. The intelligent cold storage refrigeration system according to claim 4, wherein the intermediate heat exchanger (3) is a plate heat exchanger or a falling film heat exchanger.
6. The intelligent cold-storage refrigerating system according to claim 4, characterized in that a first heat exchanger (15) is further installed in the loop of the first refrigerating system (1), the first heat exchanger (15) is simultaneously communicated with the evaporator (23) in the second refrigerating system (2) through a cold-carrying pipeline (01), and a second pump body (16) is installed on the cold-carrying pipeline (01) communicating the first heat exchanger (15) with the evaporator (23).
7. The intelligent cold accumulation refrigeration system according to claim 6, wherein the solenoid valve (14) is disposed adjacent to the expansion valve (13), the solenoid valve (14) and the expansion valve (13) are connected in parallel with a check valve (17), and the check valve (17) controls the fluid flow direction to be opposite to the fluid flow direction controlled by the solenoid valve (14).
8. The intelligent cold accumulation refrigeration system according to claim 7, wherein the intermediate heat exchanger (3) is a plate heat exchanger.
9. The application of the intelligent cold accumulation refrigeration system is characterized in that the first refrigeration system (1) is loaded to achieve 100% -200% of the normal power consumption requirement in the electricity fee valley period, and the first refrigeration system (1) is loaded to achieve 0% -100% of the normal power consumption requirement in the electricity fee peak leveling period.
10. Use of an intelligent cold accumulation refrigeration system according to claim 9, characterized in that the first refrigeration system (1) is down loaded when the liquid level of the cold accumulation device (21) in the second refrigeration system (2) reaches 90% -100%.
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| CN202110994083.0A CN113686038A (en) | 2021-08-27 | 2021-08-27 | Intelligent cold accumulation refrigerating system and application thereof |
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| CN115164455A (en) * | 2022-06-20 | 2022-10-11 | 合肥通用机械研究院有限公司 | Cold-carrying medium circulating system with moisture absorption prevention function |
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| CN115164455A (en) * | 2022-06-20 | 2022-10-11 | 合肥通用机械研究院有限公司 | Cold-carrying medium circulating system with moisture absorption prevention function |
| CN115164455B (en) * | 2022-06-20 | 2023-10-24 | 合肥通用机械研究院有限公司 | Cold-carrying medium circulation system with moisture absorption preventing function |
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