Entropy in an irreversible process

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SUMMARY

In an irreversible process, the change in entropy for a closed system is always greater than zero. This is due to the inherent generation of entropy caused by factors such as friction and other irreversible effects. Specifically, an adiabatic process, which involves no heat transfer, still results in an increase in entropy when it is irreversible, contradicting the notion that entropy change could be zero under these conditions. The discussion emphasizes that work must be supplied to return the system to its initial state.

PREREQUISITES
  • Understanding of the Second Law of Thermodynamics
  • Familiarity with the concepts of entropy and irreversibility
  • Knowledge of adiabatic processes in thermodynamics
  • Basic principles of thermodynamic systems
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  • Research the Second Law of Thermodynamics in detail
  • Explore the concept of entropy generation in irreversible processes
  • Study the characteristics of adiabatic processes and their implications
  • Investigate methods to minimize entropy generation in practical applications
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Students and professionals in thermodynamics, physicists, and engineers interested in understanding the principles of entropy and irreversible processes.

supermesh
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Can entropy change be zero for a closed system in an irreversible process? If yes under what conditions? Thanks!
 
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Is it true that entropy change for the irreversible process would be zero for an adiabatic process carried out in constant temperature?
 
No!
Adiabatic means no heat transfer. The fact that the process is irreversible means that there is still entropy generated however this is now due to friction or other irreversible effects
 
Hi there:

For an irreversible process, entropy change is always greater than zero.

It means that work needs to be provided in order to get the system back to its initial conditions.

By definition, entropy generation/increase/change is a measure of irreveribility ...

Thanks,

Gordan
 

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