Question

The coefficient of performance of a carnot refrigerator is 5/3 .If the refrigerator operating at a intake temperature $-{23}^{0}C$ then what will be the exhaust temperature?

Answer 1

We know,

Coeficient of Perfoemance, $COP=\frac{T_{Low}}{T_{High}-T_{Low}}$

$\frac{5}{3}=\frac{273-23}{T_{High}-(273-23)}⟹T_{High}-250=150⟹T_{High}=400K=127°C$

is the exhaust temperature