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Environment-friendly type cryogen for air conditioner

A refrigerant and environmentally friendly technology, applied in the field of refrigerants, to achieve safe operation, good thermal cycle performance, and simple proportioning process

Inactive Publication Date: 2006-03-08
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proposed alternative working fluids all contain a large amount of R134a with a high GWP value, resulting in a strong greenhouse effect for the alternative working fluids

Method used

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  • Environment-friendly type cryogen for air conditioner
  • Environment-friendly type cryogen for air conditioner
  • Environment-friendly type cryogen for air conditioner

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and the embodiment that inventor provides and the present invention is described in further detail.

[0022] According to the principle of similarity in vapor pressure of alternative working fluids proposed by the applicant in literature [1], it is determined that the mixture of three working fluids, R32, R125, and R152a, has the possibility of having a similar vapor pressure to R22. According to the above technical scheme, it is determined that the high-efficiency environmentally friendly refrigerant is composed of a ternary mixture, namely FFC32, FFC125, and FFC152a, and the mass percentage distribution ratio is: FFC32: 20-45%, FFC125: 10-30%, FFC152a: 45- 70%. Use the Helmholtz free energy mixing law to optimize various binary and ternary substitutes for R22, and determine that the performance of R32 / R125 / R152a is the most ideal in the ratio, including unit volume refrigeration capacity, condensing pressure, and energy e...

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Abstract

The invention discloses a highly effective environment-friendly type cooling agent, which comprises tertiary mixture (R32 / 125 / 152a). As an ideal substitution actuating medium for R22, the cooling agent has similar performance with R22 in terms of whole set refrigerating capacity. The invention realizes good thermodynamic cycling performance, thus can be directly applied to the equipments in refrigeration, air-conditioning low-temperature refrigeration where the original R22 is used.

Description

technical field [0001] The invention belongs to a refrigerant in refrigeration air conditioners and heat pumps, in particular to an environment-friendly refrigerant used in air conditioners. Background technique [0002] As the HCFCs (chlorofluorocarbons) limit date is approaching, the replacement of refrigerants has gradually shifted from R12 to R22. [0003] At present, both at home and abroad, especially developed countries, have invested a lot of power in researching it. The American Institute of Refrigeration and Air Conditioning (API) established the APEP / TC project in January 1992 to evaluate R502 and R22 replacement research. The Japan Air Conditioning and Industry Association also established the corresponding APEP / T project in March of the same year. A number of candidate working fluids have been launched one after another. The most popular ones are the azeotropic mixture R410A (HFC32 / HFC125, mass ratio 50 / 50) of United Signal Corporation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/04
Inventor 刘志刚吴江涛褚英杰
Owner XI AN JIAOTONG UNIV
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