Kelvin-Planck statement: A process whose only effect is the complete conversion of heat into work is impossible.
Informal: e<1
Clausius statement: It is impossible to construct a device that, operating in a cycle, produces no effect other than the transfer of heat from a colder to hotter body.
Informal: K<¡Þ
Carnot Cycle
Carnot engine is the most efficient heat engine that operates between two heat sinks. The process involved in the Carnot engine is reversible.
Efficiency of a Carnot engine
Carnot refrigerator
Carnot cycle is reversible. Carnot refrigerator is obtained when all the cycles of a Carnot engine is reversed.
