USCG Exam PracticeRefrigeration and air conditioning
What is the primary purpose of the receiver in a marine refrigeration system?
- A. To superheat the refrigerant vapor before it enters the compressor
- B. To remove moisture and particles from the liquid refrigerant
- ✓ To store the liquid charge and provide a steady supply of liquid to the metering deviceCorrect
- D. To throttle the high-pressure liquid to low pressure before the evaporator
Why C 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 room to pump the whole charge down into for servicing. Moisture removal is the function of the filter-drier; throttling is the function of the metering device.
Cited:NAVEDTRA 14075 §6-3