Instant Notes
Completion requirements
Types of Thermodynamic Systems
Open system: Mass and energy transfers across the boundary of the system.
e.g.: Open vessel having a liquid.Closed system: Energy transfers across the boundary of the system. No transfer of mass occurs.
e.g.: A gas confined in a piston-cylinder arrangement, the walls of cylinder is a good thermal conductor.Isolated system: No transfer of mass or energy across the boundary of the system.
e.g.: A gas confined in a piston-cylinder arrangement, the walls of which are made of insulating materials.
The following tablegives the comparison of various systems.
Type of System | Mass Flow | Work | Heat |
---|---|---|---|
Open | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) |
Closed | \(\boldsymbol\times\) | \(\checkmark\) | \(\checkmark\) |
Isolated | \(\boldsymbol\times\) | \(\boldsymbol\times\) | \(\boldsymbol\times\) |