Question on: SS2 Physics - Heat and Thermodynamics
In a refrigeration system, the refrigerant undergoes an expansion process in the expansion valve. During this process, the refrigerant:
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A
Increases in temperature and pressure
B
Increases in temperature and decreases in pressure
C
Decreases in temperature and pressure
D
Decreases in temperature and increases in pressure
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Correct Option: C
Explanation: In the expansion valve of a refrigeration system, the high-pressure liquid refrigerant undergoes a throttling process, leading to a decrease in both temperature and pressure. This decrease in pressure allows the refrigerant to expand and evaporate in the evaporator, absorbing heat from the surrounding environment.
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