A mixed working medium containing monofluoroethane and trifluoroethylene

Abstract

A mixed working medium containing monofluoroethane and trifluoroethylene belongs to the field of power engineering and engineering thermophysics. It consists of trifluoroethylene as a first component, monofluoroethane as a second component, and must be mixed with one or both other compounds. When forming a ternary mixture, any one of pentafluoroethane, difluoromethane, trifluoroiodomethane, and hexafluoropropylene needs to be added; when forming a quaternary mixture, it is necessary to add pentafluoroethane, difluoromethane, trifluoro Two of methyl iodide, hexafluoropropylene, propane, and dimethyl ether, but not any two of propane, dimethyl ether, and difluoromethane at the same time. Compared with R-404A, the multi-component mixed working medium proposed by the present invention has significantly reduced greenhouse effect potential. Its condensing pressure is equivalent to that of R-404A, and it has the technical advantage of continuing to use the main related systems or components of current R-404A. Compared with R‑404A, it has stronger thermal conductivity and smaller flow resistance, which is conducive to further optimization and improvement of heat exchangers. Its refrigeration cycle performance coefficient is higher than that of R-404A, which has energy-saving significance.

Description

technical field [0001] The invention belongs to the field of power engineering and engineering thermophysics, and relates to a multi-component mixed working medium containing monofluoroethane and trifluoroethylene, especially used as a refrigerant. Background technique [0002] The problem of global warming is becoming more and more severe, and the international community generally believes that it is closely related to human activities, especially greenhouse gas emissions. From the "Kyoto Protocol" signed in the early stage, it was proposed to limit the emission of carbon dioxide, methane, nitrous oxide, sulfur hexafluoride, hydrofluorocarbons and perfluorocarbons; to the "Paris Agreement" signed in December 2015, which established the 2020 Afterwards, the international climate change mechanism arrangement with the goal of "nationally determined contributions" as the main body, all parties promised to control the increase in global average temperature below 2°C, and work to...

AI Technical Summary

Problems solved by technology

However, ammonia is toxic, flammable and explosive, and the tragic accident caused people to "talk about ammonia discoloration" for a time; while chlorodifluoromethane is destructive to the ozone layer and is being phased out in accordance with the "Montreal Protocol"

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