Question

What is the best coefficient of performance for a refrigerator that cools an environment at -26.0°C and has heat transfer to another environment at 50.0°C?

Answer 1

COP = 4.25

Step-by-step explanation:

It is given that,

Cooling temperature,
`T_c=-26^(\circ)C=273-26=247\ K`

Heating temperature,
`T_h=50^(\circ)C=323\ K`

We need to find the coefficient of performance. It is given by :

`COP=(T_h)/(T_h-T_c)`

`COP=(323)/(323-247)`

COP = 4.25

So, the best coefficient of performance of a refrigerator is 4.45 Hence, this is the required solution.