Introduction to choose the matters needing attention of refrigerant R410a refrigerator

The nature of the refrigerant will directly affect the size, structure, category of refrigerating machine and running characteristics, at the same time also can affect the form of the refrigeration cycle, equipment structure and the economic and technical performance, therefore, reasonable choosing refrigerants is a very important problem. Usually on the performance of r410a refrigerant from thermodynamics, physical chemistry, * *, the impact on the environment and economy aspects into consideration. R410a refrigerant thermodynamic requirements: ( 1) Lower boiling point, low evaporation temperature can be obtained. At the same time, the low boiling point R410a refrigerant has higher vapor pressure. ( 2) Higher critical temperature and setting temperature is lower, so as to guarantee the R410a refrigerant in a wider temperature range of * * work. ( 3) R410a refrigerant must have appropriate work pressure. Refrigerants evaporating pressure close to or slightly higher than the atmospheric pressure, avoid the refrigeration system of low pressure area increases with a vacuum air mixed system. Too much pressure on condensation. Low condensing pressure can reduce the intensity of refrigeration equipment, pipeline and construction requirements, reduce construction investment of cooling system and the possibility of refrigerant leak outward. Pressure on the condensing pressure and evaporation pressure ratio and pressure difference is small.

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