The Misleading Use of “Enthalpy” in an Energy Conversion Analysis

Abstract

The frequently used thermodynamic state quantity enthalpy H turns out to be very problematic when applied in an energy conversion analysis. Due to the fact that H combines two terms, the internal energy U and the product pV, the interpretation of what H means in physical terms is often obscure and leads to various misinterpretations. Several examples are given and interpreted twice,i.e.with and without referring to enthalpy.

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Herwig, H. (2014) The Misleading Use of “Enthalpy” in an Energy Conversion Analysis. Natural Science, 6, 878-885. doi: 10.4236/ns.2014.611085.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] Moran, M.J. and Shapiro, H.N. (1996) Fundamentals of Engineering Thermodynamics. Wiley and Sons, New York.
[2] Cengel, Y. (1997) Introduction to Thermodynamics and Heat Transfer. McGraw-Hill Companies, New York.
[3] Warhaft, Z. (1997) An Introduction to Thermal-Fluid Engineering. Cambridge University Press, Cambridge.
[4] Herwig, H. (2006) Strömungsmechanik. Springer-Verlag, Berlin.
[5] Herwig, H. and Schmandt, B. (2014) How to Determine Losses in a Flow Field: A Paradigm Shift towards the Second Law Analysis. Entropy, 16, 2959-2989.
http://dx.doi.org/10.3390/e16062959

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