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Refrigerator and method for direct coupling of Stirling cycle and vapor compression refrigeration cycle

A technology of vapor compression and refrigeration cycle, which is applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc. Effects of thermal process and simplification of auxiliary equipment

Active Publication Date: 2017-07-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both experiments and theory have proved that an increase in the temperature of the cooling water will lead to an increase in the temperature of the hot end of the regenerator, resulting in a decrease in the performance of the refrigerator

Method used

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  • Refrigerator and method for direct coupling of Stirling cycle and vapor compression refrigeration cycle

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Experimental program
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Effect test

Embodiment Construction

[0013] Such as figure 1 As shown, the refrigerator directly coupled with the Stirling cycle and the vapor compression refrigeration cycle includes a Stirling refrigerator and a vapor compression refrigerator, and the Stirling refrigerator includes a sequentially connected compression piston 1, a compression chamber 2, a condensation evaporation 3, regenerator 4, cold end heat exchanger 5, expansion chamber 6, push piston 7, vapor compression refrigerator includes compressor 8, condenser 9, throttle valve 10, condensing evaporator 3 connected in sequence .

[0014] The condensing evaporator 3 adopts a partitioned wall heat exchanger structure. The drive unit of the refrigerating machine can adopt a rotary motor and a crank connecting rod mechanism.

[0015] The refrigeration method used by the refrigerator directly coupled with the Stirling cycle and the vapor compression refrigeration cycle is: the compression piston 1 moves up, the Stirling cycle working medium A in the com...

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Abstract

The invention discloses a Stirling cycle and steam compression refrigeration cycle directly-coupled refrigerating machine and method. The refrigerating machine comprises a Stirling refrigerating machine body and a steam compression refrigerating machine body. The Stirling refrigerating machine body comprises a compression piston, a compression cavity, a condensation evaporator, a heat regenerator, a cold-end heat exchanger, an expansion chamber and a push piston. The steam compression refrigerating machine body comprises a compressor, a condenser, a throttling valve and a condensation evaporator. Cold fluid in the condensation evaporators is a working medium for the steam compression refrigeration cycle, hot fluid is a working medium for the Stirling cycle, and the cold fluid and the hot fluid exchange heat through the wall of the heat exchanger. The working medium for the steam compression refrigeration cycle is used for directly cooling the working medium for the Stirling cycle, compared with a refrigerating medium cooling method, the average temperature of the working medium in the condensation evaporators can be greatly reduced, and the performance of the Stirling cycle is improved. The heat exchange process is simplified, auxiliary power consumption equipment of the condensation evaporators is reduced, and the refrigerating efficiency of the whole system is improved.

Description

technical field [0001] The invention relates to a regenerative low-temperature refrigerator, in particular to a refrigerator directly coupled with a Stirling cycle and a vapor compression refrigeration cycle and a method thereof. [0002] technical background [0003] The application of high-temperature superconducting technology and small cryogenic liquefaction devices has greatly promoted the rapid development of high-power cryogenic refrigerators. The Stirling refrigerator has the characteristics of high efficiency, fast cooling rate, and wide refrigeration temperature range. Its technology is relatively mature and its cost is low. It is the first choice for hundreds and kilowatts of refrigeration equipment. [0004] The Stirling refrigerator uses the Stirling cycle to obtain cooling capacity. The Stirling cycle is a closed thermodynamic cycle consisting of isothermal compression, isothermal expansion, and two isothermal reheating processes. The compression heat generated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B25/00
CPCF25B25/00
Inventor 孙大明张宁蔡亚超徐雅张冲沈惬乔鑫
Owner ZHEJIANG UNIV
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