CN211261345U - Heat gradient utilization system for indirect air cooling system - Google Patents

Heat gradient utilization system for indirect air cooling system Download PDF

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Publication number
CN211261345U
CN211261345U CN201922182845.8U CN201922182845U CN211261345U CN 211261345 U CN211261345 U CN 211261345U CN 201922182845 U CN201922182845 U CN 201922182845U CN 211261345 U CN211261345 U CN 211261345U
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China
Prior art keywords
circulating water
condenser
heat
air cooling
pump
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CN201922182845.8U
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Chinese (zh)
Inventor
赵宁
司派友
刘双白
左川
范晓英
吉力特
田东来
潘振兴
刘占胜
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Inner Mongolia Jingneng Shengle Thermoelectricity Co ltd
State Grid Corp of China SGCC
North China Electric Power Research Institute Co Ltd
Original Assignee
Inner Mongolia Jingneng Shengle Thermoelectricity Co ltd
State Grid Corp of China SGCC
North China Electric Power Research Institute Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems

Abstract

The application provides a heat cascade utilization system for indirect air cooling system includes: the system comprises a circulating water pump, a first condenser, an absorption heat pump, an air cooling tower, a second condenser, a turbine unit and a heat supply network circulating water system; the first condenser is respectively connected with the circulating water pump, the absorption heat pump, the second condenser and the turbine unit; the first condenser is connected with the air cooling tower through a control valve; the circulating water pump is respectively connected with the air cooling tower and the absorption heat pump; the absorption heat pump is respectively connected with the air cooling tower, the second condenser, the turbine unit and the heat supply network circulating water system, wherein a temperature sensor and a pressure sensor are arranged at the connection part of the absorption heat pump and the heat supply network circulating water system; the second condenser is respectively connected with the steam turbine set and the heat supply network circulating water system, so that the utilization rate of the heat of the circulating water of the indirect air cooling system can be improved, and the burden of the cooling tower is reduced.

Description

Heat gradient utilization system for indirect air cooling system
Technical Field
The application relates to the technical field of air cooling, in particular to a heat gradient utilization system for an indirect air cooling system.
Background
At present, air cooling technology is used in large-scale thermal power plants in most areas in the north of China. The indirect air cooling system adopts ambient air as a cooling medium of the turbine circulating cooling water, and is greatly influenced by environmental conditions. In spring and autumn, the ambient wind speed is high, and the ventilation volume is reduced under the influence of the ambient wind; the ambient temperature is low in winter, and the backpressure is low, but often faces the risk of preventing frostbite, often in order to prevent frostbite, increases the backpressure, leads to the burden of indirect cooling tower heavier.
If the heat of the circulating water can be utilized, the burden of the indirect cooling tower can be reduced.
SUMMERY OF THE UTILITY MODEL
To the problem among the prior art, the application provides a heat cascade utilization system for indirect air cooling system, can improve indirect air cooling system circulating water thermal utilization ratio, reduces the burden of cooling tower.
In order to solve the technical problem, the application provides the following technical scheme:
in a first aspect, the present application provides a heat cascade utilization system for an indirect air cooling system, comprising:
the system comprises a circulating water pump, a first condenser, an absorption heat pump, an air cooling tower, a second condenser, a turbine unit and a heat supply network circulating water system;
the first condenser is respectively connected with the circulating water pump, the absorption heat pump, the second condenser and the turbine unit; the first condenser is connected with the air cooling tower through a control valve;
the circulating water pump is respectively connected with the air cooling tower and the absorption heat pump;
the absorption heat pump is respectively connected with the air cooling tower, the second condenser, the turbine unit and the heat supply network circulating water system, wherein a temperature sensor and a pressure sensor are arranged at the connection part of the absorption heat pump and the heat supply network circulating water system;
and the second condenser is respectively connected with the steam turbine set and the heat supply network circulating water system.
Furthermore, a water supply port of the first condenser is connected with the air cooling tower through an air cooling circulating water supply pipeline.
Further, the second condenser is connected with the hot well of the first condenser through a condensed water pipeline.
Furthermore, the turbine unit is respectively connected with the first condenser and the second condenser through a steam exhaust pipeline, and a control valve is arranged between the turbine unit and the second condenser; the steam turbine set is connected with the absorption heat pump through a steam extraction pipeline, and a control valve is arranged between the steam turbine set and the absorption heat pump.
Furthermore, a water supply port of the heat supply network circulating water system is connected with the second condenser through a heat supply network circulating water supply pipeline, and a control valve is arranged between the heat supply network circulating water system and the second condenser; the water return port of the heat supply network circulating water system is connected with the absorption heat pump through a heat supply network circulating water return pipeline, and a control valve is arranged between the heat supply network circulating water system and the absorption heat pump.
Furthermore, the absorption heat pump is connected with the circulating water pump through a water outlet pipeline, and a control valve is arranged between the absorption heat pump and the circulating water pump.
Furthermore, the water supply port of the first condenser is connected with the absorption heat pump through a circulating water supply pipeline, and a control valve is arranged between the first condenser and the absorption heat pump.
Further, the first condenser is connected with the circulating water pump through a first circulating water return pipeline.
Further, the second condenser is connected with the circulating water pump through a second circulating water return pipeline.
Furthermore, the first condenser is connected with a condensed water pipeline and used for outputting condensed water obtained by condensing the exhausted steam of the steam turbine set.
Further, the heat cascade utilization system for the indirect air cooling system further comprises: a controller; the controller is respectively connected with the temperature sensor, the pressure sensor and each control valve.
According to the above technical solution, the present application provides a heat cascade utilization system for an indirect air cooling system, including: the system comprises a circulating water pump, a first condenser, an absorption heat pump, an air cooling tower, a second condenser, a turbine unit and a heat supply network circulating water system; the first condenser is respectively connected with the circulating water pump, the absorption heat pump, the second condenser and the turbine unit; the first condenser is connected with the air cooling tower through a control valve; the circulating water pump is respectively connected with the air cooling tower and the absorption heat pump; the absorption heat pump is respectively connected with the air cooling tower, the second condenser, the turbine unit and the heat supply network circulating water system, wherein a temperature sensor and a pressure sensor are arranged at the connection part of the absorption heat pump and the heat supply network circulating water system; the second condenser is respectively connected with the steam turbine set and the heat supply network circulating water system; the second condenser respectively with turbine unit and heat supply network circulating water system connect, can carry out comprehensive utilization with the circulating water heat in the indirect cooling tower, improve indirect air cooling system circulating water heat's utilization ratio, reduce the burden of cooling tower, specifically, carry out the heat transfer of steam turbine steam extraction and heat supply network circulating water through first condenser, reduce the heat load of second condenser. The waste heat of the circulating water is recycled and used for a heat supply network water system, so that the steam extraction amount of a low-pressure cylinder of a steam turbine can be reduced, and the economic benefit of a unit can be increased; the economical efficiency of the operation of the indirect air cooling system and the safety of the anti-freezing operation are greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a heat cascade utilization system for an indirect air cooling system in an embodiment of the present application.
Fig. 2 is a block diagram of a heat cascade utilization system for an indirect air cooling system according to an embodiment of the present invention.
Description of the symbols
1. A water circulating pump;
2. a first condenser;
3. an absorption heat pump;
4. an air cooling tower;
5. 6, 7, 8, 9, 10, 16, control valve;
11. a steam turbine unit;
12. a steam exhaust duct;
13. a first circulating water return pipeline;
14. an air-cooling circulating water supply pipeline;
15. a steam exhaust duct;
17. a second condenser;
18. a condensed water pipeline;
19. a heat supply network circulating water supply pipeline;
20. a second circulating water return pipeline;
21. a heat supply network circulating water return pipeline;
22. a steam extraction pipeline;
23. a circulating water supply pipeline;
24. a water outlet pipeline;
25. heat supply network circulating water system.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. 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 application.
Improve indirect air cooling system circulating water heat's utilization ratio, reduce the burden of cooling tower, the application provides the embodiment that is used for indirect air cooling system's heat cascade utilization system, refer to fig. 1 and fig. 2, the heat cascade utilization system for indirect air cooling system contains as follows:
the system comprises a circulating water pump 1, a first condenser 2, an absorption heat pump 3, an air cooling tower 4, a second condenser 17, a turbine unit 11 and a heat supply network circulating water system 25; the first condenser 2 is respectively connected with the circulating water pump 1, the absorption heat pump 3, the second condenser 17 and the turbine unit 11; the first condenser 2 is connected with the air cooling tower 4 through a control valve 7; the circulating water pump 1 is respectively connected with the air cooling tower 4 and the absorption heat pump 3; the absorption heat pump 3 is respectively connected with the air cooling tower 4, the second condenser 17, the turbine unit 11 and the heat supply network circulating water system, wherein a temperature sensor and a pressure sensor are arranged at the connection part of the absorption heat pump 3 and the heat supply network circulating water system 25; the second condenser 17 is connected to the turbine unit 11 and the heat supply network circulating water system 25, respectively.
Specifically, the second condenser is used for carrying out the heat transfer of turbine unit exhaust steam and heat supply network circulating water, can reduce the heat burden of first condenser. The control valve between the first condenser and the air cooling tower can control the amount of circulating water entering the air cooling tower, so that the utilization rate of the heat energy of the circulating water is regulated and controlled. The absorption heat pump is used for recovering heat in air cooling circulating water, and heated hot water can be directly used for primary pipe network heat supply, so that the steam extraction amount of the low-pressure cylinder of the steam turbine is reduced. Specifically, the temperature sensor is used for collecting the temperature of circulating water in a heat supply network circulating water return pipeline connecting the absorption heat pump and the heat supply network circulating water system, and the pressure sensor is used for collecting the water pressure of circulating water in the heat supply network circulating water return pipeline connecting the absorption heat pump and the heat supply network circulating water system, so that the early warning can be timely carried out on abnormal temperature and water pressure, and the safety of a heat cascade utilization system for an indirect air cooling system is improved.
It can be understood that a temperature sensor and a pressure sensor can also be arranged at the joint of the turbine wheel set and the first condenser and used for collecting and connecting the steam temperature and the steam pressure in the exhaust pipeline of the turbine wheel set and the first condenser.
And a water supply port of the first condenser is connected with the air cooling tower 4 through an air cooling circulating water supply pipeline 14.
The second condenser 17 is connected with the hot well of the first condenser through a condensed water pipeline 18, and condensed water obtained by condensing exhausted steam of the turbine unit 11 can be sent to the hot well of the first condenser.
The steam turbine set 11 is connected with the first condenser 2 and the second condenser 17 through a steam exhaust pipeline respectively, and a control valve 16 is arranged between the steam turbine set 11 and the second condenser 17.
Specifically, the turbine set 11 is connected with the second condenser 17 through an exhaust pipe 15, and the turbine set 11 is connected with the first condenser 2 through an exhaust pipe 12.
The steam turbine set 11 is connected with the absorption heat pump 3 through a steam extraction pipeline 22 and used for providing driving steam for the absorption heat pump 3, and a control valve 5 is arranged between the steam turbine set 11 and the absorption heat pump 3.
A water supply port of the heat supply network circulating water system is connected with the second condenser 17 through a heat supply network circulating water supply pipeline 19, and a control valve 9 is arranged between the heat supply network circulating water system and the second condenser; the heat supply network circulating water can exchange heat with the exhaust steam of the wind turbine generator 11 in the second condenser 17, so that the temperature of the heat supply network circulating water is increased.
The return water mouth 21 of heat supply network circulating water system pass through heat supply network circulating water return water pipeline 21 with absorption heat pump 3 is connected, be equipped with control valve 10 between heat supply network circulating water system and the absorption heat pump 3, the heat supply network circulating water is in absorb heat once more in the absorption heat pump 3, can improve indirect air cooling system circulating water thermal utilization ratio.
The absorption heat pump 3 is connected with the circulating water pump 1 through a water outlet pipeline 24, and a control valve 8 is arranged between the absorption heat pump 3 and the circulating water pump 1.
The water supply port of the first condenser is connected with the absorption heat pump 3 through a circulating water supply pipeline 23, and a control valve 6 is arranged between the first condenser 2 and the absorption heat pump 3.
The first condenser 2 is connected with the circulating water pump 1 through a first circulating water return pipeline 13.
The second condenser 17 is connected with the absorption heat pump 3 through a second circulating water return pipe 20.
The first condenser 2 is connected with a condensed water pipeline and is used for outputting condensed water obtained by condensing the exhaust steam of the turbine unit 11; the output condensed water can enter the steam turbine set again after being processed, so that the steam turbine set can be reused.
In an embodiment of the present application, the heat cascade utilization system for an indirect air cooling system further includes: a controller; the controller is respectively connected with the temperature sensor, the pressure sensor and the control valves, and is used for controlling the on-off of the control valves and receiving information acquired by the temperature sensor and the pressure sensor in real time, so that the automation degree of the heat gradient utilization system for the indirect air cooling system is improved.
It will be appreciated that each of the conduits may be provided with a temperature sensor and a pressure sensor, and the controller is connected to each of the temperature sensors and the pressure sensors, respectively, to further improve the safety and reliability of the heat cascade system for an indirect air cooling system.
In one embodiment of the application, the heat cascade utilization system for the indirect air cooling system can also be used for relieving the anti-freezing problem of the indirect air cooling unit; the heat of the circulating water can be recovered in summer, and the temperature of the circulating water is reduced, so that the back pressure of a unit is reduced, and the coal consumption of power generation is reduced; the deep peak regulation capability of the indirect air cooling system can be enhanced, and peak regulation compensation benefits can be obtained.
In order to further improve the utilization ratio of the heat of the circulating water of the indirect air cooling system and reduce the burden of the cooling tower, the application also provides a specific embodiment of the heat cascade utilization system for the indirect air cooling system, which comprises the following contents:
a water circulating pump; a host condenser; an absorption heat pump; an indirect air cooling tower; driving a steam inlet valve; a circulating water inlet valve of the waste heat system; a circulating water inlet valve of the indirect air cooling tower; a circulating water return valve of the waste heat system; a heat supply network circulating water inlet valve; a heat supply network circulating water return valve; a steam turbine unit; a steam exhaust duct; a circulating water return pipeline; a circulating water supply pipeline; a steam exhaust duct; a waste heat system exhaust steam control valve; a pre-condenser; a waste heat system condensed water pipeline; a heat supply network circulating water return pipeline; a waste heat system heat supply network circulating water return pipeline; a heat supply network circulating water supply pipeline; a steam extraction duct of the steam turbine unit; a circulating water inlet pipeline of the heat pump system; and a circulating water outlet pipeline of the heat pump system.
One path of exhaust steam of the turbine set is connected with a main machine condenser through an exhaust steam pipeline, the other path of exhaust steam is connected with a pre-condenser through an exhaust steam pipeline, and the pre-condenser is connected with a hot well of the main machine condenser through a pipeline. The circulating water return of the indirect cooling tower is connected with the main machine condenser through a circulating water return pipeline, and the circulating water pump is installed on the return pipeline. Meanwhile, one path of circulating water supply of the main machine condenser is connected with the indirect air cooling tower through a pipeline, the other path of circulating water supply of the main machine condenser is connected with the absorption heat pump through a pipeline, and circulating water return water of the absorption heat pump is connected with a circulating water return water pipeline through a pipeline. The extraction steam of the steam turbine set is connected with the steam side of the absorption heat pump through a pipeline.
The heat supply network circulating water backwater is connected with the front condenser through a heat supply network circulating water backwater pipeline, then the front condenser is connected with the water inlet side of the absorption heat pump through a waste heat system heat supply network circulating water pipeline, and the heat supply network circulating water supply is connected with the water supply side of the absorption heat pump through a heat supply network circulating water supply pipeline. The driving steam inlet valve is installed on a steam extraction pipeline of the steam turbine unit, the waste heat system circulating water inlet valve is installed on a circulating water inlet pipeline of a heat pump system, the indirect air cooling tower circulating water inlet valve is installed on a circulating water supply pipeline, the waste heat system circulating water return valve is installed on a circulating water outlet pipeline of the heat pump system, the heat supply network circulating water inlet valve is installed on a heat supply network circulating water supply pipeline, the heat supply network circulating water return valve is installed on a heat supply network circulating water return pipeline, and the waste heat system steam exhaust control valve is installed on a steam exhaust pipeline.
In order to further improve the utilization rate of the heat of the circulating water of the indirect air cooling system and reduce the burden of the cooling tower, the application also provides a specific embodiment of a heat gradient utilization method for the indirect air cooling system, which comprises the following contents:
when the waste heat of the circulating water is not required to be completely recycled, the circulating water is subjected to heat exchange and temperature rise through a host condenser and then is divided into two paths, one path of the circulating water passes through an absorption heat pump, is subjected to heat release and temperature reduction in the absorption heat pump and then enters a circulating water pump through a water return valve; and the other path of the water still enters the indirect air cooling tower sector through the original water inlet valve for heat exchange, then enters a circulating water pump and finally returns to a main machine condenser. When the heat of the circulating water needs to be completely recovered, the circulating water is subjected to heat exchange by the host condenser, is heated and completely passes through the absorption heat pump, is subjected to heat release and temperature reduction in the heat pump, and then enters the circulating water pump through the water return valve; the original water inlet valve is closed, and the indirect air cooling tower does not feed water. The driving steam of the absorption heat pump is provided by the medium pressure cylinder exhaust steam of the steam turbine through a steam inlet valve, the heat supply network circulating water firstly enters the preposed condenser through a water inlet valve to exchange heat with partial exhaust steam of the steam turbine, and partial exhaust steam of the steam turbine is directly recycled to a hot well of the host condenser after being cooled. And the heat-absorbed heat supply network circulating water enters the absorption heat pump to absorb heat further and then returns to the heat supply network circulating water supply system through the water return valve. Thereby realizing the purposes of reducing the heat load of the indirect air cooling tower and comprehensively utilizing the circulating water waste heat in a gradient manner.
As can be seen from the above description, the heat cascade utilization system for the indirect air cooling system provided by the present application recovers the waste heat through the absorption heat pump, thereby substantially reducing the problems of large heat load of the indirect air cooling tower in summer, high unit back pressure and poor economical efficiency; the anti-freezing problem of the indirect air cooling tower can be relieved in winter; the structure of two-stage condenser can carry out the heat transfer of steam turbine exhaust and heat supply network circulating water through first condenser, reduces the heat load of second condenser. The waste heat of the circulating water is recycled and used for a heat supply network water system, so that the economic benefit of the unit can be increased. The economical efficiency of the operation of the indirect air cooling system and the safety of the anti-freezing operation are greatly improved.
In the present application, the embodiments of the heat cascade utilization system for an indirect air cooling system are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. The relevant points can be seen in the partial description of the embodiment.
The principle and the implementation mode of the present application are explained by applying specific embodiments in the present application, and the description of the above embodiments is only used to help understanding the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (11)

1. A heat cascade utilization system for an indirect air cooling system, comprising:
the system comprises a circulating water pump, a first condenser, an absorption heat pump, an air cooling tower, a second condenser, a turbine unit and a heat supply network circulating water system;
the first condenser is respectively connected with the circulating water pump, the absorption heat pump, the second condenser and the turbine unit; the first condenser is connected with the air cooling tower through a control valve;
the circulating water pump is respectively connected with the air cooling tower and the absorption heat pump;
the absorption heat pump is respectively connected with the air cooling tower, the second condenser, the turbine unit and the heat supply network circulating water system, wherein a temperature sensor and a pressure sensor are arranged at the connection part of the absorption heat pump and the heat supply network circulating water system;
and the second condenser is respectively connected with the steam turbine set and the heat supply network circulating water system.
2. The heat cascade system for an indirect air cooling system of claim 1,
and a water supply port of the first condenser is connected with the air cooling tower through an air cooling circulating water supply pipeline.
3. The heat cascade system for an indirect air cooling system of claim 1,
the second condenser is connected with the hot well of the first condenser through a condensed water pipeline.
4. The heat cascade system for an indirect air cooling system of claim 1,
the steam turbine set is respectively connected with the first condenser and the second condenser through a steam exhaust pipeline, and a control valve is arranged between the steam turbine set and the second condenser;
the steam turbine set is connected with the absorption heat pump through a steam extraction pipeline, and a control valve is arranged between the steam turbine set and the absorption heat pump.
5. The heat cascade system for an indirect air cooling system of claim 1,
a water supply port of the heat supply network circulating water system is connected with the second condenser through a heat supply network circulating water supply pipeline, and a control valve is arranged between the heat supply network circulating water system and the second condenser;
the water return port of the heat supply network circulating water system is connected with the absorption heat pump through a heat supply network circulating water return pipeline, and a control valve is arranged between the heat supply network circulating water system and the absorption heat pump.
6. The heat cascade utilization system for the indirect air-cooling system according to claim 1, wherein the absorption heat pump is connected with the circulating water pump through a water outlet pipeline, and a control valve is arranged between the absorption heat pump and the circulating water pump.
7. The heat cascade utilization system for the indirect air cooling system according to claim 1, wherein a water supply port of the first condenser is connected with the absorption heat pump through a circulating water supply pipeline, and a control valve is arranged between the first condenser and the absorption heat pump.
8. The heat cascade system for an indirect air cooling system of claim 1,
the first condenser is connected with the circulating water pump through a first circulating water return pipeline.
9. The heat cascade system for an indirect air cooling system of claim 1,
and the second condenser is connected with the circulating water pump through a second circulating water return pipeline.
10. The heat cascade system for an indirect air cooling system of claim 1,
the first condenser is connected with a condensed water pipeline and used for outputting condensed water obtained by condensing the exhausted steam of the steam turbine set.
11. The heat cascade utilization system for an indirect air cooling system of claim 1, further comprising: a controller;
the controller is respectively connected with the temperature sensor, the pressure sensor and each control valve.
CN201922182845.8U 2019-12-06 2019-12-06 Heat gradient utilization system for indirect air cooling system Active CN211261345U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922182845.8U CN211261345U (en) 2019-12-06 2019-12-06 Heat gradient utilization system for indirect air cooling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922182845.8U CN211261345U (en) 2019-12-06 2019-12-06 Heat gradient utilization system for indirect air cooling system

Publications (1)

Publication Number Publication Date
CN211261345U true CN211261345U (en) 2020-08-14

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ID=71986648

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Application Number Title Priority Date Filing Date
CN201922182845.8U Active CN211261345U (en) 2019-12-06 2019-12-06 Heat gradient utilization system for indirect air cooling system

Country Status (1)

Country Link
CN (1) CN211261345U (en)

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