Entropy vs Enthalpy: Which is the Better Calculation for Heat Transfer?

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SUMMARY

In the discussion regarding heat transfer calculations, the two primary equations mentioned are Q=T*m*(delta s) for entropy and Q=m*(delta h) for enthalpy. The consensus is that the choice between using entropy or enthalpy should be based on which method simplifies the calculations. The reference to Gibbs' work provides additional context for understanding these concepts in thermodynamics.

PREREQUISITES
  • Understanding of thermodynamic principles
  • Familiarity with the concepts of entropy and enthalpy
  • Basic knowledge of heat transfer equations
  • Ability to interpret thermodynamic diagrams
NEXT STEPS
  • Research the application of the Gibbs free energy in thermodynamics
  • Learn about the differences between entropy and enthalpy in practical scenarios
  • Study the derivation and applications of the heat transfer equations Q=T*m*(delta s) and Q=m*(delta h)
  • Explore thermodynamic cycles and their relevance to heat transfer calculations
USEFUL FOR

Students and professionals in thermodynamics, engineers involved in heat transfer analysis, and anyone seeking to clarify the application of entropy and enthalpy in calculations.

causader90776
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When calculating heat transfer, how would one know when to use Q=T*m*(delta s) versus Q=m*(delta h). I'm confused when we should calculate using entropy versus enthalpy. Anything helps. Thank you!
 
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Welcome to PF;
You use whichever makes the maths simplest.
You may be thinking of:
http://2ndlaw.oxy.edu/gibbs.html
 

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