NS  Vol.6 No.11 , July 2014
The Misleading Use of “Enthalpy” in an Energy Conversion Analysis
Author(s) Heinz Herwig*
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.

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