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In thermodynamics, a reversible process is a process, involving a system and its surroundings, whose direction can be reversed by infinitesimal changes in some properties of the surroundings, such as pressure or temperature.
Learn what reversible and irreversible processes are in thermodynamics, and how they differ in their ability to return to the original state. See examples of both types of processes, and test your knowledge with a quiz.
A reversible process is truly an ideal process that rarely happens. We can make certain processes close to reversible and therefore use the consequences of the corresponding reversible processes as a starting point or reference.
Reversible processes are idealizations or models of real processes. One familiar and widely used example is Bernoulli's equation, which you saw in Unified. They are extremely useful for defining limits to system or device behavior, for enabling identification of areas in which inefficiencies occur, and in giving targets for design.
Learn the definitions and examples of reversible and irreversible processes in thermodynamics. A reversible process is one that can be restored to the initial states of system and environment, while an irreversible process is one that violates the second law of thermodynamics.
14 Ιουν 2021 · For a system that exchanges heat with its surroundings, a process can be reversible only if the temperatures of the system and the surroundings are arbitrarily close to one another. In a reversible process, net heat transfer occurs between two entities—the system and its surroundings—that are arbitrarily close to thermal equilibrium.
14 Ιουν 2021 · We call any process whose direction can be reversed by an arbitrarily small change in a thermodynamic state function a reversible process. Evidently, there is a close connection between reversible processes and equilibrium states.
