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← ScienceWhich risk increases when operating a refrigeration cycle near its thermodynamic limit?
A)Icing within the expansion valve✓
B)Increased lubricant oil viscosity
C)Reduced compressor motor efficiency
D)Premature refrigerant decomposition
💡 Explanation
Icing risk increases because of moisture accumulation followed by rapid adiabatic cooling during throttling, a consequence of maximized ΔT across the expansion valve utilizing the Joule-Thomson effect; therefore icing, rather than the other options, prevents cycle completion rather than changing efficiency.
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