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← ScienceWhich risk significantly rises when a chiller's refrigerant undergoes subcooling?
A)Compressor head pressure remains high
B)Condenser coil heat transfer declines
C)Expansion valve capacity increases✓
D)Evaporator coil ices excessively
💡 Explanation
Subcooling enhances liquid density arriving at the expansion valve; therefore, increased flow capacity through the expansion valve results, rather than decreased heat transfer elsewhere, because subcooling minimizes vapor formation before the metering device.
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