Heating an Ideal Gas: Why Burning Fuel is Equivalent to Reversible Heating

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SUMMARY

The discussion centers on the equivalence of heating an ideal gas at constant pressure through burning fuel and reversible heating. Participants clarify that while both processes can achieve the same temperature increase, the mechanisms differ significantly. The key point is that although burning fuel is not a reversible process, it can produce the same thermodynamic effects as reversible heating under specific conditions. Understanding these nuances is essential for grasping thermodynamic principles related to ideal gases.

PREREQUISITES
  • Understanding of ideal gas laws and properties
  • Knowledge of thermodynamic processes, specifically constant pressure heating
  • Familiarity with the concept of reversible and irreversible processes
  • Basic principles of energy transfer and combustion reactions
NEXT STEPS
  • Study the first law of thermodynamics as it applies to ideal gases
  • Explore the differences between reversible and irreversible processes in thermodynamics
  • Learn about constant pressure heating and its implications for ideal gases
  • Investigate combustion thermodynamics and its effects on gas behavior
USEFUL FOR

This discussion is beneficial for students studying thermodynamics, educators teaching gas laws, and professionals in fields related to energy systems and combustion engineering.

Katie1990
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Homework Statement



I'm struggling to explain why for an ideal gas at constant pressure heating by burning fuel is equivalent to reversible heating. I know that all forms of work on a ideal gas are eqivalent but don't know why.

Homework Equations





The Attempt at a Solution

 
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I wouldn't call the two cases equivalent. In what ways of equivalency do you mean?
 
The question asks me to explain why burning a fuel that is clearly not reversible is the same as if heat was supplied reversibly.
 

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