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In thermodynamics, a mechanically isolated system is a system that is mechanically constrained to disallow deformations, so that it cannot perform any work on its environment. It may however, exchange heat across the system boundary.
For a simple system, mechanical isolation is equivalent to a state of constant volume and any process which occurs in such a simple system is said to be isochoric.
The opposite of a mechanically isolated system is a mechanically open system, which allows the transfer of mechanical energy. For a simple system, a mechanically open boundary is one that is allowed to move under pressure differences between the two sides of the boundary. At mechanical equilibrium, the pressures on both sides of a mechanically open boundary are equal, but only a mechanically isolating boundary can support pressure differences.
See also
- Closed system
- Thermally isolated system
- Dynamical system
- Open system
- Thermodynamic system
- Isolated system
References
- Guha, Evelyn (2000). Basic Thermodynamics. Alpha Science Int'l Ltd. p. 150. ISBN 9781842650004. Retrieved 2012-12-11.
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