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The air working medium has been applied in residential buildings, vehicles, and air conditioning and/or cooling systems of turboplanes. The reason why air as a working medium is...

harm Ozone layer depletion. In February 1985, J. Farman, the captain of the British Antarctic Expedition, first reported that since 1977, the total amount of ozone over Antarcti...

The selection of refrigerants is a complex technical and economic issue that requires consideration of many factors. When selecting refrigerants, a comprehensive technical analy...

In steam compression refrigerators, refrigerant selection should not only have good thermal and physicochemical properties, but also have excellent environmental characteristics...

① Non toxic, non flammable. It has good security. The ozone depletion potential (ODP) is 0, and the global warming potential (GWP) is 1, which has good economic benefits without...

(1) Ammonia: The standard evaporation temperature is -33.4 ℃, the solidification temperature is -77.7 ℃, the pressure is moderate, the refrigeration capacity per unit volume is ...

There are several types according to their composition. (1) Inorganic compounds. Water, ammonia, carbon dioxide, etc. (2) A derivative of saturated hydrocarbons, commonly known ...

Freon-12 (Code: R12) R12 is a halogenated compound of alkanes, scientific name difluorodichloromethane, and molecular formula CF2Cl2. It is a medium pressure medium temperature ...

The number of refrigerants used at the time of publication has reached 70-80 and is constantly increasing. But there are only over ten types used in the food industry and air co...

explain Refrigerant classification: inorganic compounds, organic compounds, mixed working fluids [2] Inorganic compounds Number: R7XX (XX - Molecular weight of inorganic compoun...

(1) Having excellent thermodynamic properties to achieve high cycle efficiency when operating within a given temperature range. The specific requirements are: the critical tempe...

The refrigerant code was first specified for Freon, and at the time of publication, it was the standard established by the American Heating and Refrigeration Engineering Associa...