Refrigerator:
A Refrigerator is a device which operating in a cyclic
process to maintain the temperature of a cold body (refrigerated space) at a
temperature lowers than the temperature of surrounding.
![Refrigerator Refrigerator](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEioCZlEGawXbvw3q80YinS6KnV0gLDVJswVa4r1DkbtMB8dt-id1-kXHRXQiEKuh8QBiD2l-KmLjHrL602o3_w2Pfs2y58YyGyCCP6EITBTx2ZnFCg8UfKsTf5iBtKgfhtzsl7qLIiNdFPN/s16000/Heat+pump.jpg)
Main Components of a Refrigerator:
- Evaporator: It contains work fluid at lower temperature than environment. Heat is extracted from ground, air, or water. Pressure is low, so the work fluid evaporates.
- Compressor: Compressor brings gas to higher pressure, the temperature rises.
- Condenser: Gas temperature is higher than fluid temperature of heating system. Excess heat is transferred to fluid. The gas cools and condenses.
- Expansion Valve: Expansion Valve causes pressure reduction, the temperature drops, and the cycle begins again.
Coefficient of Performance (COP):
The performance of an Air conditioner or Refrigerator is
judged by how much heat transfer Q c occurs into the warm space compared with how
much work input W is required.
![Coefficient of Performance (COP) Coefficient of Performance (COP)](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj7A-0bzFgFsleA_yNd6lTF_DxrLOycvHu0OsxLXs-TCBqqVYbgct8IFd12w5Db_DEO-Eb_2w1rZ2-G1HOvlo6b6E8sYWEn1c_x4gacBJo9Cm2RAWo9aOZzzxy3WN9pFPX7KslCSHvKVjvM/w320-h174/COP+Refrigerator.jpg)
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