Low-grade thermal compound driving refrigerating system for large data center

A low-grade heat and refrigeration system technology, applied in solar heating systems, solar collectors using working fluids, refrigerators, etc., can solve the problems of low waste heat and waste heat, difficult to use, etc. Efficiency, the effect of expanding the use of categories

Pending Publication Date: 2022-05-06
嵊州市浙江工业大学创新研究院
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the stable heat production of existing large-scale data centers, but the low level of waste heat (less than 75°C) is difficult to utilize, the present invention provides a low-grade heat-driven refrigeration system for large-scale data centers, which uses air source heat pumps The system extracts the waste heat of the data center, heats it up and supplies it to the jet refrigeration main system, and at the same time, solar energy can be used as a supplementary heat source during the day, which effectively utilizes low-grade heat energy, realizes full use of low-grade heat sources such as solar energy and data center waste heat, and saves energy for data center refrigeration the goal of

Method used

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  • Low-grade thermal compound driving refrigerating system for large data center
  • Low-grade thermal compound driving refrigerating system for large data center
  • Low-grade thermal compound driving refrigerating system for large data center

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 , figure 1 The low-grade thermal composite drive refrigeration system for large data centers includes ejector compression refrigeration units, data center waste heat warming units and solar thermal collection units.

[0029] When the solar radiation is sufficient and the heat production of the data center is stable, the jet compression refrigeration unit, the waste heat heating unit of the data center and the solar heat collection unit are started at the same time. At this time, the power of the variable speed compressor is low or does not need to be started.

[0030] The ejector compression refrigeration unit includes ejector 1, condenser 2, pump 3, three-way valve 4, heat exchanger I5, throttle valve I6, gas-liquid separator 7, throttle valve II8, evaporator I9, variable speed compressor 10 , Solenoid valve I11 and heat exchanger II15. The specific connection method is: the outlet of ejector 1, the outlet of variable speed compressor 10 are connected to...

Embodiment 2

[0037] see figure 2 , figure 2 The low-grade thermal composite drive refrigeration system for large data centers includes ejector compression refrigeration units and data center waste heat warming units.

[0038] When the solar radiation is weak due to the alternation of day and night and the weather changes, and there is no normal heating of the solar collector unit, the solenoid valve II16 is closed, and the solar collector unit stops working. The waste heat heating unit of the data center provides a low-grade heat source, variable speed compression Auxiliary power supply to maintain the stable operation of the system.

[0039] In the data center waste heat heating unit, the refrigerant in the evaporator II12 changes from a liquid state to a gas state to absorb the low-grade waste heat generated by the data center, and the refrigerant leaving the evaporator II12 enters the compressor 14 to compress high-temperature and high-pressure gas, The gas enters the heat exchanger...

Embodiment 3

[0042] see image 3 , image 3 The low-grade heat compound drive refrigeration system used in large data centers includes ejector compression refrigeration units.

[0043] When the available low-grade energy is insufficient, the first and third ports of the three-way valve 4 are opened, the second port is closed, the solar heat collection unit and the waste heat heating unit of the data center are stopped, and the ejector 1 is stopped. This embodiment is equivalent to In a traditional vapor compression refrigeration system, the variable speed compressor 10 provides electric energy to maintain refrigeration.

[0044] The invention combines the characteristics of the injector with simple structure and no moving parts, and can widely utilize low-grade energy. The waste heat temperature of the data center is low, less than 70°C, but the heat production is large and stable. The heat is collected by the heat pump system. For use in jet compression refrigeration systems. Realize t...

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Abstract

The invention discloses a low-grade thermal compound driving refrigerating system for a large data center, which is characterized by comprising an injection compression refrigerating unit, a data center waste heat heating unit and a solar heat collecting unit, the data center waste heat heating unit and the solar heat collecting unit are respectively arranged on the injection compression refrigerating unit, and the data center waste heat heating unit is connected with the solar heat collecting unit. And a refrigerant of the injection compression refrigeration unit can be heated through the solar heat collection unit and the data center waste heat temperature rising unit. Solar energy and waste heat generated by a large data center are fully utilized, composite use of solar energy and waste heat is achieved, the use category of low-grade heat is expanded, and the operation range, efficiency and reliability of an injection-compression refrigeration system are enhanced.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a low-grade heat-driven refrigeration system for large data centers. Background technique [0002] Energy, as an important material basis for economic growth and social progress, promotes the rapid development of society. With the rapid development of society, the demand for energy is increasing rapidly, which intensifies the contradiction between social development and environmental protection. [0003] With the rapid development of artificial intelligence, cloud computing and other information technologies, large data centers are also increasing. In 2020, global data center power consumption accounts for 5% of the world's total power consumption, while the energy consumption of air conditioning and refrigeration systems Accounting for about 35% of the total energy consumption of data centers, the application of refrigeration and energy-saving technologies is ur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/08F25B41/40F25B41/20F25B43/00F25B39/00F24S10/00
CPCF25B9/08F25B41/40F25B41/20F25B43/00F25B39/00F24S10/00Y02E10/44
Inventor 余家棋徐英杰周水清郑垚波谢勇
Owner 嵊州市浙江工业大学创新研究院
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