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On the Reference State for Exergy when Ambient Temperature Fluctuates

Year 2009, Volume: 12 Issue: 3, 113 - 121, 01.09.2009

Michel Pons

Abstract

Exergy (availability) is the amount of mechanical work that could be produced by reversible processes. This notion is revisited in the case when ambient temperature fluctuates. Simple examples are first considered, and then a theoretical approach is developed. It results that the most reliable way for combining entropy and total energy into an exergy function is a linear combination where entropy is multiplied by a constant temperature. It results that ambient air has non-zero exergy, but that exergy is surely conserved in ideal reversible processes. This approach is relevant for studying some recent problems in solar energy and building engineering.

Keywords

solar energy building dead state thermodynamics second law heat storage

Year 2009, Volume: 12 Issue: 3, 113 - 121, 01.09.2009

Michel Pons

Abstract

There are 0 citations in total.

Details

Primary Language English
Journal Section Regular Original Research Article
Authors

Michel Pons

Publication Date September 1, 2009
Published in Issue Year 2009 Volume: 12 Issue: 3

Cite

APA Pons, M. (2009). On the Reference State for Exergy when Ambient Temperature Fluctuates. International Journal of Thermodynamics, 12(3), 113-121.
AMA Pons M. On the Reference State for Exergy when Ambient Temperature Fluctuates. International Journal of Thermodynamics. September 2009;12(3):113-121.
Chicago Pons, Michel. “On the Reference State for Exergy When Ambient Temperature Fluctuates”. International Journal of Thermodynamics 12, no. 3 (September 2009): 113-21.
EndNote Pons M (September 1, 2009) On the Reference State for Exergy when Ambient Temperature Fluctuates. International Journal of Thermodynamics 12 3 113–121.
IEEE M. Pons, “On the Reference State for Exergy when Ambient Temperature Fluctuates”, International Journal of Thermodynamics, vol. 12, no. 3, pp. 113–121, 2009.
ISNAD Pons, Michel. “On the Reference State for Exergy When Ambient Temperature Fluctuates”. International Journal of Thermodynamics 12/3 (September 2009), 113-121.
JAMA Pons M. On the Reference State for Exergy when Ambient Temperature Fluctuates. International Journal of Thermodynamics. 2009;12:113–121.
MLA Pons, Michel. “On the Reference State for Exergy When Ambient Temperature Fluctuates”. International Journal of Thermodynamics, vol. 12, no. 3, 2009, pp. 113-21.
Vancouver Pons M. On the Reference State for Exergy when Ambient Temperature Fluctuates. International Journal of Thermodynamics. 2009;12(3):113-21.