Question

A refrigerator is to maintain eatables kept inside at $9^{o}C$. If room temperature is ${36}^{o}C$, calculate the coefficient of performance.

• A. $14.25$
• B. $10.44$
• C. $5.67$
• D. $21.33$

Answer 1

The correct option is B $10.44$

Temperature inside the refrigerator, $T_1=9^{o}C=282K$
Room temperature, $T_2={36}^{o}C=309K$
Coefficient of performance $=T_1/(T_2-T_1)=282/(309-282)=10.44$
Therefore, the coefficient of performance of the given refrigerator is $10.44$.