Which refrigerant is most suitable for an industrial refrigeration plant operating at -40°F according to Modern Refrigeration and Air Conditioning 22nd ed.?
- AR-134a
- BR-404A
- R-22
- DR-410A
Exam tip
Consult technical references for the appropriate refrigerant selection based on operating temperatures and system requirements.
Why C is correct
R-22 is the most suitable refrigerant for low-temperature applications such as those at -40°F. R-134a, R-404A, and R-410A are not as effective at such low temperatures.
