Since it is a reversible cycle, all four processes can be reversed. It has the maximum efficiency for a given temperature limit. The difference is in their objectives.Ĭarnot cycle is a totally reversible cycle which consists of two reversible isothermal processes and two isentropic processes. Heat pump and refrigerator cycles are very similar. This process requires a special device called Refrigerator.Īnother device which transfers heat from low to high temperature is a Heat Pump. heat transfer from low to high temperature) cannot occur by itself (Claussius Definition of Second Law). ![]() It is a well known fact that heat flows in the direction of decreasing temperature, i.e., from a high temperature region to a low temperature region.īut the reverse process (i.e.
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