USCG Exam PracticeAir conditioning, ventilation, and compressed air
In a flooded evaporator, refrigerant level inside the coil is maintained by which control device?
- A. A thermostatic expansion valve metering refrigerant based on superheat
- ✓ A float control that keeps the coil filled with liquid to a set levelCorrect
- C. A low-pressure cutout that cycles the compressor to regulate level
- D. A solenoid valve modulated by the space thermostat
Why B is correct
NAVEDTRA 14075 §6-5 specifically describes the flooded evaporator as one where the coil is kept filled with liquid to a level set by a float control, with vapor separated off the top. The thermostatic expansion valve and dry-expansion arrangement are associated with dry-expansion evaporators, not flooded ones.
Cited:NAVEDTRA 14075 §6-5