Thermodynamics: Irreversible process and entropy

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SUMMARY

This discussion focuses on the concept of irreversible processes in thermodynamics, specifically addressing examples and their irreversibility on a microscopic scale. Two examples provided include an engine operation, which experiences Joule heating and friction, and any real process where the system and surroundings are not in equilibrium. The discussion emphasizes that irreversible processes cannot return to their initial states without external work, highlighting the fundamental principles of entropy and thermodynamic equilibrium.

PREREQUISITES
  • Understanding of the Second Law of Thermodynamics
  • Familiarity with concepts of entropy
  • Knowledge of thermodynamic systems and equilibrium
  • Basic principles of heat transfer and friction
NEXT STEPS
  • Research the implications of the Second Law of Thermodynamics on real-world processes
  • Study the concept of entropy in detail, including its mathematical formulation
  • Explore examples of irreversible processes in various engineering applications
  • Learn about the role of Joule heating in thermodynamic systems
USEFUL FOR

Students studying thermodynamics, educators teaching thermodynamic principles, and engineers involved in designing systems where heat transfer and efficiency are critical.

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Homework Statement


Hi !

I'm stuck with these two questions of my assignment of thermodynamics

- Give two exemples of irreversible process (initial state, process, final state)
- For each of them, explain why they are irreversible on the microscopic scale.

Homework Equations


We are not asked any calculations here. I only need to describe with a few sentences.

The Attempt at a Solution


irreversible process => exemple : An engine (?) There's an irreversible process because of the Joule heating and frictions.
 
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An irreversible thermodynamic process for an arbitrary system is one during which the system and surroundings are not in equilibrium. So think of any real process.

AM
 

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