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← ScienceWhich outcome occurs when a refrigeration system refrigerant undergoes a phase transition at expansion valve exit?
A)System icing due to adiabatic cooling
B)Reduced cooling from incomplete evaporation✓
C)Compressor damage from liquid slugging
D)Overheating from decreased heat transfer
💡 Explanation
When refrigerant undergoes a phase transition mainly to liquid at the expansion valve outlet, insufficient heat absorption occurs during evaporation because not all refrigerant can change state since it needs heat. Therefore, reduced cooling by incomplete evaporation results, rather than icing, compressor damage or overheating which require alternative conditions or mechanisms.
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