Irreversibility
The irreversibility of a process is defined as the difference between the useful work and the actual work
Consider the system ant it surroundings as a compositive system, the work done by the composite system under adiabatic condition
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or  |
(26.17) |
Application of the two laws of thermodynamics to the surroundings gives
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(26.18) |
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(26.19) |
Substituting (26.19) in (26.16)
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(26.18) |
or  |
(26.20) |
Net change in the volume of the composite system is zero
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(26.21) |
For an irreversible process  and for a reversible process,  .
Irreversibility (Alternative Method)
Figure 26.2
Refer to Figure 26.2
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