Chemical Engineering Thermodynamics
Refrigeration cycle

Both A and B
Neither A nor B
Violates second law of thermodynamics
Involves transfer of heat from low temperature to high temperature

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Chemical Engineering Thermodynamics
A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect?

Vapor compression cycle using expansion engine
Carnot refrigeration cycle
Vapor compression cycle using expansion valve
Air refrigeration cycle

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