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← ScienceWhich outcome occurs when a refrigeration system using ammonia experiences rapid pressure reduction during throttling?
A)Ammonia evaporator flash vapor increases✓
B)Compressor cooling efficiency rapidly increases
C)System superheat significantly decreases
D)Refrigerant subcooling dramatically improves
💡 Explanation
Flash vaporization increases because it relies on the Joule-Thomson effect; a sudden pressure drop causes some liquid refrigerant to vaporize. Therefore, the evaporator receives more vapor, which reduces the cooling capacity, rather than enhancing it; this limits system performance.
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