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Carnot's theorem (thermodynamics)
Carnot's theorem, also called Carnot's rule is a principle which sets a limit on the maximum amount of efficiency any possible engine can obtain, which thus solely depends on the difference between the hot and cold temperature reservoirs. Carnot's theorem states:
The rule was an essential stepping stone towards the formulation of the second law of thermodynamics. When transforming thermal energy into mechanical energy, the thermal efficiency of a heat engine is the percentage of energy that is transformed into work. Thermal efficiency is defined as
Carnot's theorem sets essential limitations on the yield of a cyclic heat engine such as steam engines or internal combustion engines: they can extract only a certain proportion of mechanical energy from the heat of the working fluid; this maximal amount is realized by the ideal Carnot heat engine.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Carnot's_theorem_(thermodynamics)". A list of authors is available in Wikipedia.|