USCG Exam PracticeRefrigeration principles and systems
What is the purpose of the receiver in a marine refrigeration system?
- A. To compress low-pressure vapor to high pressure
- B. To remove moisture and particles from the liquid refrigerant
- ✓ To hold the liquid charge and provide a steady supply of liquid to the metering deviceCorrect
- D. To throttle high-pressure liquid to low pressure before the evaporator
Why C is correct
Per NAVEDTRA 14075 §6-3, the receiver is 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 the whole charge down for servicing. Moisture removal is the function of the filter-drier; throttling is the function of the metering device.
Cited:NAVEDTRA 14075 §6-3