Explain the working of a refrigerator as a heat pump.

1.	Explain the working of a refrigerator as a heat pump.
Answer» \tIt works on principle which is reverse of a heat engine.\tIn refrigerators we have 2 bodies lower temperature (cold) body which is freezer and higher temperature (hot) body which is surroundings.\tIt takes heat from the cold reservoir and then some work is done on the refrigerator and then the amount of heat is transferred to heat reservoir.\tLet Q2 be the takes from the cold reservoir, W is the work done on the system and then releases Q1 amount of heat to the hot reservoir.\tMathematically Q2+ W=Q1\xa0Heat Pump: In a heat pump heat is supplied into system when the surroundings are cold.

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