Question

Define the COP of a refrigerator.

Answer 1

Answer:

COP of refrigerator is the ratio of refrigerating effect or heat extraction from the refrigerator space to the work input.

Explanation:

Step1

COP stands for coefficient of performance of the heat pump or refrigerator depending upon working device. COP of refrigerator is the ratio of refrigerating effect or heat extraction from the refrigerator space to the work input. Refrigerating effect is the cooling effect of the refrigerator.

Step2

Expression for COP of refrigerator is expressed as follows:

$(COP)_{R}=\frac{Q_{s}}{W_{in}}$

Step3

COP of the refrigerator directly indicates the cost of refrigerator or the cooling effect as compare to work input or energy input by compressor.  

The diagram of the refrigerator is shown below.