USCG Exam PracticeRefrigeration and air conditioning
What is the purpose of the receiver in a refrigeration system?
- A. To separate non-condensable gases from the refrigerant before it enters the compressor
- ✓ To store the liquid charge and provide a steady supply of liquid to the metering deviceCorrect
- C. To superheat the refrigerant vapor before it enters the compressor suction
- D. To throttle the high-pressure liquid to low pressure before the evaporator
Why B is correct
NAVEDTRA 14075 §6-3 describes the receiver as a storage vessel that holds the liquid charge, provides a steady supply of liquid to the metering device regardless of load swings, and provides capacity to pump down the whole charge for servicing. Throttling is the function of the metering device, not the receiver.
Cited:NAVEDTRA 14075 §6-3