We examine the exergy balance of a multi-component fluid subject to viscous dissipation processes, heat transfer by conduction, heat transfer by radiation, matter diffusion and chemical reactions. The differential equations for exergy balance in the fluid formalize the relationship between the exergy input/output approach to second law analysis and the entropy generation procedure using the Gouy-Stodola theorem. The balance relations for mass, momentum, energy and entropy are used to establish the validity conditions for the exergy balance equations. In particular, we define the role and significance of the assumption of local thermodynamic equilibrium. The general functions and restrictions of nonequilibrium thermodynamics within second law analysis are also discussed.
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March 1991
Research Papers
Application of Nonequilibrium Thermodynamics in Second Law Analysis
Z. F. Sun,
Z. F. Sun
Department of Physics, University of Otago, Dunedin, New Zealand
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C. G. Carrington
C. G. Carrington
Department of Physics, University of Otago, Dunedin, New Zealand
Search for other works by this author on:
Z. F. Sun
Department of Physics, University of Otago, Dunedin, New Zealand
C. G. Carrington
Department of Physics, University of Otago, Dunedin, New Zealand
J. Energy Resour. Technol. Mar 1991, 113(1): 33-39 (7 pages)
Published Online: March 1, 1991
Article history
Received:
September 20, 1990
Revised:
February 7, 1991
Online:
April 16, 2008
Citation
Sun, Z. F., and Carrington, C. G. (March 1, 1991). "Application of Nonequilibrium Thermodynamics in Second Law Analysis." ASME. J. Energy Resour. Technol. March 1991; 113(1): 33–39. https://doi.org/10.1115/1.2905777
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