Question

Consider an ideal vapour compression refrigeration cycle working on R-134a refrigerant. The COP of the cycle is 10 and the refrigeration capacity is 150 kJ/kg. The heat rejected by the refrigerant in the condenser is \(\underline{\hspace{1cm}}\) kJ (round off to the nearest integer).

Hint:

In a refrigeration cycle, the heat rejected is determined by the refrigeration capacity and the COP of the system.

Answer 1

Correct Answer: 165

The heat rejected in the condenser is related to the refrigeration capacity and the COP by the following equation: \[ \text{Heat rejected} = \text{Refrigeration capacity} \times (1 + \frac{1}{\text{COP}}). \] Substituting the given values: \[ \text{Heat rejected} = 150 \times (1 + \frac{1}{10}) = 150 \times 1.1 = 165 \, \text{kJ}. \] Thus, the heat rejected by the refrigerant in the condenser is: \[ \boxed{165 \, \text{kJ}}. \]