A refrigerator based on ideal vapour compression cycle operates between the temperature limits of −20∘C and 40∘C. The refrigerant enters the condenser as saturated vapour and leaves as saturated liquid. The enthalpy and entropy values for saturated liquid and vapour at these temperatures are given in table below.Thfhgsfsg(∘C)(kJ/kg)(kJ/kg)(kJ/kg K)(kJ/kg K)−20201800.070.736640802000.30.67If refrigerant circulation rate is 0.025 kg/s, the refrigeration effect is equal to

A refrigerator based on ideal vapour compression cycle operates betwee

1.	A refrigerator based on ideal vapour compression cycle operates between the temperature limits of −20∘C and 40∘C. The refrigerant enters the condenser as saturated vapour and leaves as saturated liquid. The enthalpy and entropy values for saturated liquid and vapour at these temperatures are given in table below.Thfhgsfsg(∘C)(kJ/kg)(kJ/kg)(kJ/kg K)(kJ/kg K)−20201800.070.736640802000.30.67If refrigerant circulation rate is 0.025 kg/s, the refrigeration effect is equal to
Answer» A refrigerator based on ideal vapour compression cycle operates between the temperature limits of $- 20^{\circ} C$ and $40^{\circ} C$ . The refrigerant enters the condenser as saturated vapour and leaves as saturated liquid. The enthalpy and entropy values for saturated liquid and vapour at these temperatures are given in table below. $\begin{matrix} T & h_{f} & h_{g} & s_{f} & s_{g} (^{\circ} C) & (k J / k g) & (k J / k g) & (k J / k g K) & (k J / k g K) - 20 & 20 & 180 & 0.07 & 0.7366 40 & 80 & 200 & 0.3 & 0.67 \end{matrix}$ If refrigerant circulation rate is $0.025 k g / s$ , the refrigeration effect is equal to