Engineering · Auxiliary — Refrigeration
The thermostatic expansion valve in a refrigeration system controls:
- ACompressor speed
- BThe flow of refrigerant into the evaporator to maintain superheat✓ Correct
- CCondenser cooling water
- DOil return to the crankcase
Explanation
The TXV meters liquid refrigerant into the evaporator, modulating flow to hold a set superheat at the evaporator outlet — enough refrigerant to do the cooling without flooding liquid back to the compressor.
Authority: Refrigeration (USCG engineering topic)
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