Multicomponent mixed work medium throttling refrigerant applicable to 200-204K refrigerating temperature zone

A multi-component mixed working medium and refrigerant technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of patent reports, low efficiency and high cost in the temperature zone

Inactive Publication Date: 2003-12-10
中科赛凌(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the refrigeration temperature is further lowered, if the temperature range of 200K and below is to be realized, the method usually adopted is a two-stage external cascade refrigeration cycle, and the cascade method is used to achieve a lower temperature, which makes the refrigeration system com

Method used

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  • Multicomponent mixed work medium throttling refrigerant applicable to 200-204K refrigerating temperature zone
  • Multicomponent mixed work medium throttling refrigerant applicable to 200-204K refrigerating temperature zone

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Embodiment Construction

[0051] The present invention will be described in further detail below in conjunction with the drawings and examples.

[0052] combine figure 1 and figure 2 Specifically clarify the thermodynamic working process of the multi-component mixed working medium throttling refrigerant proposed by the present invention suitable for the 200-240K refrigeration temperature zone:

[0053] The multi-element mixed working fluid throttling refrigerant suitable for the 200-240K refrigeration temperature zone of the present invention enters the compressor CP from the state L1 and is compressed to the state G01; then enters the cooler AC to cool to the state G0; enters the regenerative heat exchanger HX is further cooled to G1; then it becomes L3 after being throttled by the throttling element JT; it enters the evaporator EV, and becomes L2 after extracting the cooling capacity; then enters the recuperation heat exchanger HX for rewarming, returns to the state L1, and completes a thermal cyc...

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Abstract

The multicomponent mixed work medium throttling refrigerating agent applicable to 200-240 k temp. zone includes four groups of substances, respectively are: first group includes tetrafluoromethane, nitrogen trifluoride or mixture; second group includes ethylene, ethane, fluoroform, xenon, fluromethane, perfluoroethylene, fluoroethylene, perfluoroethane or their any two, three and several kinds or mixture of all them; fourth group includes 1-butylene, isobutane, 2-methyl butane, 1-pentene, 3-methyl-1-butylene, 2-methylpentane, 2-butylene, cyclobutane, isobutylene, n-butane, pefluorobutane, n-pentane, perfluoropentane or their two, three, several kinds ormixture of all the them; and third group includees propylene, propane, perfluoropropane, 1,1,1-trifluoroethane, 1,1,-bifluoroethane.

Description

field of invention [0001] The invention relates to refrigeration technology, in particular to a throttling refrigerant with multiple mixed working fluids suitable for the refrigeration temperature range of 200-240K. Background technique [0002] The minimum refrigeration temperature of a single-stage vapor compression refrigeration cycle can generally only reach 230K, but when it actually reaches 240K, the refrigeration efficiency will deteriorate due to low evaporation pressure. In order to achieve a lower refrigeration temperature, a multi-stage compression method can be used. The multi-stage compression reduces the pressure ratio of each stage, thereby reducing the evaporation pressure. The two-stage compression cycle can generally achieve a refrigeration temperature of about 210K, while the multi-stage compression method A dedicated compressor is required. When the refrigeration temperature is further lowered, if the temperature range of 200K and below is to be realized...

Claims

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Application Information

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IPC IPC(8): C09K5/04
Inventor 吴剑峰公茂琼罗二仓
Owner 中科赛凌(北京)科技有限公司
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