“It is impossible to construct a device which operates on a cycle and whose sole effect is the transfer of heat from a cooler body to a hotter body”. Listed below are three that are often encountered. The second law of thermodynamics may be expressed in many specific ways. Key Factsīefore these statements, we have to remind Carnot’s rule that specifies limits on the maximum efficiency any heat engine can obtain. In a natural thermodynamic process, the sum of the entropies of the interacting thermodynamic systems increases. The entropy of any isolated system never decreases. ![]() ![]() Article Summary & FAQs What states the second law of thermodynamics?Īccording to the second law of thermodynamics:
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