Irreversible and isothermal work

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SUMMARY

The discussion centers on the equations for calculating work in thermodynamic processes, specifically focusing on irreversible and isothermal work. The equation for reversible isothermal work is established as W = nRTln(v2/v1). For irreversible processes, participants confirm that W = P(ΔV) is commonly used, but it is crucial to account for entropy generation, which reduces the useful work output. The need to adjust for entropy generation in irreversible processes is emphasized as a key consideration.

PREREQUISITES
  • Understanding of thermodynamic principles
  • Familiarity with the ideal gas law
  • Knowledge of entropy and its implications in thermodynamics
  • Basic calculus for understanding work and energy equations
NEXT STEPS
  • Study the implications of entropy generation in irreversible thermodynamic processes
  • Explore the derivation and applications of the equation W = P(ΔV)
  • Learn about the differences between reversible and irreversible processes in thermodynamics
  • Investigate real-world applications of isothermal processes in engineering
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Students and professionals in thermodynamics, mechanical engineers, and anyone involved in energy systems and process optimization.

cns
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I know work for reversible + isothermal is w=nRTln(v2/v1) but what about irrev? I see the equation W=P(delta V) used all the time. Is this the correct one to use? or is there another equn for irreversible work for a gas?

THanks
 
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Due to irreversibility you would get entropy generation which would take away from the useful work output. You might need to subtract the effect of the entropy generation.
 

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