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2019-07
Do you know the characteristics of these common refrigerants?
R717 (Ammonia) R717 Ammonia: Ammonia is currently the most widely used medium pressure refrigerant. The solidification temperature of ammonia is -77.7 ℃, the standard evaporation temperature is -33.3 ℃, and the condensation pressure is generally 1.1~1.3MPa at normal temperature, even when the cooling water temperature is as high as 30 ℃ in summer, it does not exceed 1.5MPa. Mainly used in large-scale industrial refrigeration and commercial refrigeration field. ◆ Easy to obtain, low price, moderate pressure, large unit cooling capacity, high heat release coefficient, almost insoluble in oil, small flow resistance, easy to find when leaking. But there is a pungent odor, toxic
2019-07-24