Question

Which cycle is used in refrigeration?

Answer 1

1. Refrigerator works on the principle of the Carnot cycle.
2. The equation of the Carnot cycle can be written as:
   $\eta =\frac{T_2-T_1}{T_2}$
   where is the Carnot efficiency, $T_2$is the absolute temperature of the heat source, $T_1$ is the absolute temperature of the heat sink.
3. A Carnot cycle is defined as an ideal reversible closed thermodynamic cycle.
4. By reversing the Carnot cycle we can reverse the direction of heat or work interactions.
5. A refrigerator or a heat pump are similar devices.
6. They work on the principle of reversed Carnot cycle.
7. The Carnot is also known as a Rankine cycle.