Question

? Two carnot refrigerators are employed, one for ice making and
other for comfort cooling
Option 1
The COP of Refrigerator for ice making is higher than that of the other
Option 2
The COP of Refrigerator for ice making is equal than that of the other
Option 3
The COP of Refrigerator for ice making is lower than that of the other
Option 4
The COP will depend on compressor works only

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Answer 1

The COP of Refrigerator for ice making is lower than that of the other

Explanation:

COP is the abbreviation for coefficient of performance. The COP of refrigerators is always greater than one. COP is the ratio of heat extracted from the refrigerator to the work done on the refrigerant.  

The coefficient of performance (COP) of the refrigerator used for ice making is lower than that of the refrigerator used for comfort cooling.

Option 3 is the answer.

Answer 2

Answer:

option 3

Explanation:

cop = Tlow/(Thigh - T low) => Cop = 1/(((TH)/(TL)) - 1)

lower temperature for ice making is atleast less than 0, where as for comfort cooling it is around 20°c which means lower the Lower will be the cop from above cop formula resulting in option 3