On the Reference State for Exergy when Ambient Temperature Fluctuates

Home Page
About
Submit A Journal
Submit A Conference
Submit Paper/Book
- Submit a Preprint
- Submit a Book
Contact

International Journal of Thermodynamics
Volume:12 Issue:3
On the Reference State for Exergy when Ambient Temperature Fluctuates

On the Reference State for Exergy when Ambient Temperature Fluctuates

Authors : Michel PONS

Pages : 113-121

View : 10 | Download : 6

Publication Date : 2009-09-01

Article Type : Research Paper

Abstract :Exergy insert ignore into journalissuearticles values(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

ORIGINAL ARTICLE URL

VIEW PAPER (PDF)

* There may have been changes in the journal, article,conference, book, preprint etc. informations. Therefore, it would be appropriate to follow the information on the official page of the source. The information here is shared for informational purposes. IAD is not responsible for incorrect or missing information.