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Binary zeotropic mixed refrigerant containing difluoromethane and trifluorodichloroethane

A trifluorodichloroethane, non-azeotropic mixing technology is applied in the field of refrigeration devices and binary non-azeotropic mixing refrigerants, which can solve the problems of reducing the ratio of R32, affecting the performance of air conditioners, etc., reducing pressure and depleting ozone. Small potential value, the effect of reducing the greenhouse effect

Active Publication Date: 2018-10-09
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The added tetrahydrothiophene is only used as an alert gas, which reduces the ratio of R32, so it will affect the performance of the air conditioner

Method used

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  • Binary zeotropic mixed refrigerant containing difluoromethane and trifluorodichloroethane
  • Binary zeotropic mixed refrigerant containing difluoromethane and trifluorodichloroethane
  • Binary zeotropic mixed refrigerant containing difluoromethane and trifluorodichloroethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: binary non-azeotropic mixed refrigerant, the mass percentage of the components is as follows: 94-97% of difluoromethane, and 3-6% of trifluorodichloroethane. The above two components are physically mixed in the liquid phase as a refrigerant.

Embodiment 2

[0044] Embodiment 2: binary zeotropic mixed refrigerant, the mass percentage of the components is as follows: 89-94% of difluoromethane, and 6-11% of trifluorodichloroethane. The above two components are physically mixed in the liquid phase as a refrigerant.

Embodiment 3

[0045] Embodiment 3: binary non-azeotropic mixed refrigerant, the mass percentage of components is as follows: difluoromethane 4-10%, trifluorodichloroethane 90-96%. The above two components are physically mixed in the liquid phase as a refrigerant.

[0046] Examples 1 and 2 calculate the operating conditions by taking the evaporation pressure as 8 bar, the condensing pressure as 24 bar, the suction temperature as 20°C, the subcooling degree as 5°C, and the compressor efficiency as 0.8. The environmental parameters, physical parameters and thermal performance of the refrigerants in the above examples are listed in Table 5.

[0047] Table 5 Environmental parameters, physical parameters and thermal performance of refrigerants

[0048]

[0049] It can be seen from Table 5 that the binary zeotropic mixed refrigerant of the present invention is compared with the parameters and performances of R410A and R32. The specificity of R32 of the present invention is large, and the mixed...

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Abstract

The invention provides a binary non-azeotropic mixed refrigerant containing difluoromethane and dichlorotrifluoroethane and belongs to the technical field of refrigerants. The binary non-azeotropic mixed refrigerant provided by the invention is composed of difluoromethane (R32) and dichlorotrifluoroethane (R123). The binary non-azeotropic mixed refrigerant has good thermal performance, excellent environmental performance, high safety and high market availability; and the binary non-azeotropic mixed refrigerant has good compatibility with the original system, and cycling performance of the original system can be effectively improved, so that the binary non-azeotropic mixed refrigerant has a broad prospect.

Description

technical field [0001] The invention belongs to the technical field of refrigerants, and in particular relates to a binary non-azeotropic mixed refrigerant composed of R32 and R123 with excellent thermophysical properties, which is used in refrigeration devices (household / commercial air conditioners, heat pumps, centrifugal units, etc. ). Background technique [0002] At present, there are R410A, R407C, and R32 as substitutes for R22 in the world. The GWP value of R410A is relatively high (2100). According to the SNAP plan of the US Environmental Protection Agency on the reduction of greenhouse gas emissions, the alternative CO 2 The emission reduction ratio of emission equivalent should be more than 50%. Therefore, the promotion and application of R410A in the household air conditioner market is limited. At the same time, although R407C does not need to make major changes to the existing refrigeration and air-conditioning system when replacing R22, the heat transfer perf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/04
Inventor 马国远上官继峰许树学李富平
Owner BEIJING UNIV OF TECH