In a vapour compression refrigeration system, a throttle valve is used in place of an expander because

In a vapour compression refrigeration system, a throttle valve is used in place of an expander because

Right Answer is:

The positive work in isentropic expansion of liquid is very small

SOLUTION

Throttling valves play two crucial roles in the vapor compression cycle. First, they maintain a pressure differential between low- and high-pressure sides.

Second, they control the amount of liquid refrigerant entering the evaporator.

In a vapor compression refrigeration system, a throttle valve is used in place of an expander because the positive work in the isentropic expansion of liquid is very small.

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