Question 150Refrigeration & AC - Assistant Engineer
70% to passAlkyl benzene ISO 32 cSt synthetic refrigerant oil is miscible and suitable to use with which of the following refrigerants?
AR-22
BR-32
CR-134a
DR-143a
AI Explanation
The correct answer is A) R-22. Alkyl benzene ISO 32 cSt synthetic refrigerant oil is miscible and suitable to use with R-22 refrigerant. This is because R-22 is a chlorofluorocarbon (CFC) refrigerant, and alkyl benzene oils are compatible with CFC-based refrigerants. In contrast, the other refrigerant options (R-32, R-134a, R-143a) are hydrofluorocarbon (HFC) or hydrofluoroolefin (HFO) refrigerants, which typically require synthetic polyol ester (POE) oils that are not compatible with the alkyl benzene oil.
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