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← ScienceWhich outcome increases as refrigerant undergoes a phase transition?
A)Compressor discharge-line superheat increases steadily
B)Volumetric efficiency experiences sudden changes✓
C)Condenser subcooling shows greater gradual decay
D)Evaporator performance remains constant instead
💡 Explanation
Volumetric efficiency suddenly changes because the enthalpy changes drastically during phase transition – through latent heat absorption – affects the density. Therefore, mass flow variation contributes more, rather than a gradual shift related to sensible heat only.
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