USCG Exam PracticeRefrigeration cycle and components
What is the purpose of the receiver in a marine refrigeration system?
- A. To separate non-condensable gases from the refrigerant vapor before it enters the compressor
- ✓ To store the liquid refrigerant charge and provide a steady supply to the metering deviceCorrect
- C. To superheat the refrigerant vapor leaving the evaporator
- D. To regulate the evaporator pressure at a constant set point
Why B is correct
The receiver is a storage vessel that holds the liquid charge and provides a steady supply of liquid refrigerant to the metering device regardless of load swings. It also provides capacity to pump the entire charge down into for servicing. Non-condensable gas separation, superheating, and pressure regulation are functions of other components.
Cited:NAVEDTRA 14075 §6-3