Refrigerant and applications thereof

Abstract

The invention discloses a high efficient refrigerator mixed refrigerant with a low global warming potential (GWP) value. The refrigerant comprises the following components in percentage by weight: 2 to 15% of 1,1,1,3,3-pentafluoropropane (C3H3F5, R245fa), 0 to 20% of fluoroethane (C2H5F, R161), and 65 to 98% of dimethyl ether (C2H6O, DME). The ozone depression potential (ODP) of the refrigerant is 0, the GWP value is less than 120, the environmental performance is excellent, moreover, the refrigerating capacity of the refrigerant in unit quality or unit volume is equivalent to R12 (dichlorodifluoromethane, namely freon), the COP (coefficient of performance) of the refrigerant is slightly higher than that of R12; and at the same time, the evaporation and condensing pressures of the refrigerant is approximate to those of R12, so the refrigerant can be directly injected into the refrigerating system that uses R12 originally, and has the advantages of low replacement cost, energy saving, and environment-friendliness.

Description

technical field [0001] The invention relates to a refrigerant, in particular to a refrigerant mixture in a household refrigerator system that does not destroy the atmospheric ozone layer (ODP is 0), has extremely low greenhouse effect and has excellent thermodynamic properties. Background technique [0002] Refrigerant is the carrier of energy conversion and utilization in the refrigeration system, and its thermodynamic performance plays a crucial role in the energy utilization efficiency of the system. In recent years, the two major environmental problems of ozone layer depletion and greenhouse effect have aroused global attention. Dichlorodifluoromethane (CCl 2 f 2 , R12), as a refrigerant that has been used in refrigerator refrigeration systems for a long time and has high refrigeration efficiency, has been banned from production and use. [0003] The new environment-friendly and energy-saving working fluid requires better environmental performance. First, the ozone ...

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Problems solved by technology

[0005] The refrigerant mixtures proposed in existing patents often have disadvantages such as high GWP value, or flammability, or small volumetric cooling capacity, or large temperature glide, so the development

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