Chapter 22, Problem 20P

(a)

To determine

To show: The work that a pump is supplied to run the refrigerator is given by $W=\left(\frac{{\text{T}}_{\text{h}}{\text{-T}}_{\text{c}}}{{\text{T}}_{\text{c}}}\right)\left|{\text{Q}}_{\text{c}}\right|$.

(b)

To determine

To show: The Coefficient of Performance (COP) of ideal refrigerator is $\text{COP}=\left(\frac{{\text{T}}_{\text{c}}}{{\text{T}}_{\text{h}}{\text{-T}}_{\text{c}}}\right)$.