USCG Exam PracticeRefrigeration cycle and components
What is the purpose of the receiver in a marine refrigeration system?
- A. To superheat the refrigerant vapor before it enters the compressor
- ✓ To store the liquid charge and provide a steady supply of liquid to the metering deviceCorrect
- C. To separate oil from the refrigerant before it reaches the condenser
- D. To regulate evaporator pressure by throttling refrigerant flow
Why B is correct
The receiver is a storage vessel that holds the liquid refrigerant charge, provides a steady supply to the metering device regardless of load swings, and provides capacity to store the entire charge during servicing. It does not superheat, separate oil, or regulate evaporator pressure.
Cited:NAVEDTRA 14075 §6-3