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Mixed refrigerant

A technology of mixed refrigerants and chlorodifluoromethane, which is applied in the field of mixed refrigerants for heat pump water heaters, can solve the problems of energy saving and environmental protection, and improve reliability and service life, benefit environmental protection, and balance operating parameters Effect

Inactive Publication Date: 2011-01-26
广东长菱空调冷气机制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the refrigerant of the existing air conditioner as the heating medium of the heat pump water heater, the effect of energy saving and environmental protection is not obvious
Therefore, existing refrigerant for heat pump water heater still needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The mixed refrigerant of the present invention is mainly composed of chlorodifluoromethane (CHClF 2 ), 1,1,1,2 tetrafluoroethane (CH 2 FCF 3 ) and isobutane (CH(CH 3 ) 2 CH 3 ) is mixed, and its composition by weight percentage is respectively: CHClF 2 30%, CH 2 FCF 3 is 50%, CH(CH 3 ) 2 CH 3 then 20%. The performance parameters of the mixed refrigerant are as follows: the refrigeration capacity is 1.143, the performance coefficient is 1.219, the condensation pressure is 1.506MPa, the evaporation pressure is 0.428MPa, and the exhaust temperature is 57.5°C.

Embodiment 2

[0018] The mixed refrigerant of the present invention is mainly composed of chlorodifluoromethane (CHClF 2 ), 1,1,1,2 tetrafluoroethane (CH 2 FCF 3 ) and isobutane (CH(CH 3 ) 2 CH 3 ) is mixed, and its composition by weight percentage is respectively: CHClF 2 45%, CH 2 FCF 3 is 40%, CH(CH 3 ) 2 CH 3 then 15%. The performance parameters of the mixed refrigerant are as follows: the refrigeration capacity is 1.107, the performance coefficient is 1.17, the condensation pressure is 1.645MPa, the evaporation pressure is 0.474MPa, and the exhaust temperature is 62.3°C.

Embodiment 3

[0020] The mixed refrigerant of the present invention is mainly composed of chlorodifluoromethane (CHClF 2 ), 1,1,1,2 tetrafluoroethane (CH 2 FCF 3 ) and isobutane (CH(CH 3 ) 2 CH 3 ) is mixed, and its composition by weight percentage is respectively: CHClF 2 50%, CH 2 FCF 3 is 30%, CH(CH 3 ) 2 CH 3 then 20%. The performance parameters of the mixed refrigerant are as follows: the refrigeration capacity is 1.148, the performance coefficient is 1.219, the condensation pressure is 1.641MPa, the evaporation pressure is 0.478MPa, and the exhaust temperature is 62.2°C.

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PUM

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Abstract

A mixed refrigerant is characterized in that the ingredients of the mixed refrigerant comprises chlorodifuoromethane (CHCLF2, namely R22), 1,1,1,2-tetrafluoroethane (CH2FCF3, namely R134a) and isobutene (CH(CH3)2CH3, namely R600a), wherein according to percentage by weight, the components contents are 30-85% CHCLF2, 5-50% CH2FCF3, and 3-30% CH(CH3)2CH3. The mixed refrigerant of the invention can reduce the condensing pressure of refrigerants, increase reliability and service life of condensers, which further is capable of increasing leaving water temperature and being environment-friendly.

Description

technical field [0001] The invention relates to a mixed refrigerant, in particular to a mixed refrigerant for a heat pump water heater. Background technique [0002] With the advancement of the national energy policy, people's awareness of energy saving and environmental protection has been continuously strengthened. Because hot water is an indispensable necessity in people's daily life, heat pump water heaters are more and more favored by consumers for their advantages such as energy saving, environmental protection, safety, and comfortable use. The working principle of the heat pump water heater is the reverse process of the air conditioner, and there is no special refrigerant specially designed for the heat pump water heater. Therefore, most of the current heat pump water heaters use the refrigerant of the air conditioner as the heating medium, especially chlorodifluoromethane (Molecular formula is CHClF 2 , ie R22), its performance parameters are shown in Table 1: its ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/04
Inventor 蔡佰明胡正南
Owner 广东长菱空调冷气机制造有限公司
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