Research Papers

What is the Second LAW? *

[+] Author and Article Information
E. P. Gyftopoulos, G. P. Beretta

Massachusetts Institute of Technology
Cambridge, MA 02139

*Published in the Proceedings of the Fourth International Symposium on Second Law Analysis of Thermal Systems (Rome, Italy, May 25–29, 1987), Edited by M. J. Moran and E. Sciubba, ASME book I00236, pp. 155-170 (1987). Reprinted with permission.

J. Energy Resour. Technol 137(2), 021003 (Mar 01, 2015) (11 pages) Paper No: 03-GyftopoulosBeretta-AS; doi: 10.1115/1.4026379 History: Online December 08, 2014

The thesis of this article is that thermodynamics is a rigorous science, and that the first law and the second law can be stated in an unambiguous and general way so that their implications are concrete and valid for both equilibrium and nonequilibrium states. In this light, we summarize the principles of thermodynamics, and introduce a graphical tool, the energy versus entropy diagram, that is very helpful to explain and grasp the general implications of these principles, especially in the nonequilibrium domain.

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Truesdell, C., Rational Thermodynamics, Spinger-Verlag, New York, 1984.
Bunge, M., Philosophy of Science. Vol. 53, 305 (1986). [CrossRef]
Lindblad, G., Nonequilibrium Entropy and Irreversibility, Reidel, Dordrecht, Holland, 1983.



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