Environment-friendly mixed refrigerant, preparation method thereof and refrigerating system

Abstract

The invention relates to the technical field of refrigerants, in particular to an environment-friendly mixed refrigerant, a preparation method thereof and a refrigerating system. The environment-friendly mixed refrigerant comprises a first component and a second component, the first component is fluoromethane, and the second component is one or two of 2, 3, 3, 3-tetrafluoropropene and trans-1, 3, 3, 3-tetrafluoropropene. The environment-friendly mixed refrigerant comprises the following components in percentage by mole: 12-48% of a first component and 52-88% of a second component. All the components of the environment-friendly mixed refrigerant are mixed and stirred in a normal-temperature liquid-phase state, and the environment-friendly mixed refrigerant is obtained. The environment-friendly mixed refrigerant provided by the embodiment of the invention can better replace an R134a refrigerant, on one hand, the environment-friendly and safety characteristics of the refrigerant are considered at the same time, it is guaranteed that the safety level is not lower than A2L on the basis that GWP is smaller than 150, on the other hand, the high-temperature refrigeration performance and the low-temperature heating performance are guaranteed at the same time, the energy efficiency is basically equivalent to that of the R134a, and the volume refrigerating / heating capacity is improved by more than 10% and can be improved by 121% at most.

Description

technical field [0001] The present application relates to the technical field of refrigerants, in particular, to an environmentally friendly mixed refrigerant, a preparation method of the environmentally friendly mixed refrigerant, and a refrigeration system. Background technique [0002] In response to climate change, countries around the world are vigorously developing new energy vehicles, but they are also facing issues such as battery safety, battery life, and battery life. Vehicle thermal management is a key technology to solve the above problems. The heat pump air conditioner is the core component of the vehicle thermal management, and the refrigerant directly affects the performance of the heat pump air conditioner. The refrigerant used in vehicle air conditioners in most countries is R134a (1,1,1,2-tetrafluoroethane), whose GWP value (global warming potential) is as high as 1300, and will face replacement. At present, EU countries have clearly prohibited the use of ...

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Problems solved by technology

[0003] In order to solve the technical problem of poor environmental performance of the R134a refrigerant in the prior art, the primary purpose of the present invention is to propose an environmentally friendly mixed refrigerant, which The refrigerant has good environmental performance. While having an extremely low GWP, it can take into account thermal performance and can replace R134a refrigerant

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