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  1. It considerably reduces mass of the system
  2. It improves the C.O.P., as the condenser is small
  3. The positive work in isentropic expansion of liquid is very small
  4. It leads to significant cost reduction
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1 Answers

Answer: Option 3

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

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