Air refrigeration Carnot cycle

Air refrigeration Carnot cycle

Air refrigeration system works on Carnot cycle.

Carnot cycle:

It is a cycle in which 100% work is achieved. Practically it is impossible, but we consider theoretically as 100%.

Carnot cycle Air refrigeration 

The theoretical cycle on which air refrigeration works is a reversed Carnot cycle.

Air refrigeration working on reversed Carnot cycle gives higher COP under given conditions.

In Air refrigeration system, it uses air as working fluid.

Thermodynamic analysis of Carnot cycle air refrigeration

A Carnot cycle consists of 2 isentropic and 2 isothermal processes.

All the 4 process are reversible thermodynamic processes. Hence this cycle is known as Reversible Carnot cycle.

This is represented on P-V and T-S diagram (as shown in above figure).

T_H is the highest temperature of the surroundings to which heat rejected by the air refrigerant.

T_L is the lowest temperature to be maintained in the refrigerator.