Issue |
EPL
Volume 109, Number 4, February 2015
|
|
---|---|---|
Article Number | 40008 | |
Number of page(s) | 4 | |
Section | General | |
DOI | https://doi.org/10.1209/0295-5075/109/40008 | |
Published online | 27 February 2015 |
Maximum reversible work extraction from a blackbody radiation reservoir. A way to closing the old controversy
Candida Oancea Institute, Polytechnic University of Bucharest - Spl. Independentei 313, Bucharest 060042, Romania and Academia Romana - Calea Victorie 125, Bucharest, Romania
(a) badescu@theta.termo.pub.ro
Received: 1 December 2014
Accepted: 7 February 2015
The old controversy concerning the correctness of Petela-Landsberg-Press and Carnot formulas for the efficiency of reversible work extraction from a blackbody radiation reservoir is solved. Both formulas are correct. They are particular cases of a more general formula involving the geometric factor of the radiation reservoir. The maximum work rate density obtained from a reservoir associated with Carnot efficiency may be higher, or lower, than that obtained from a radiation reservoir of similar temperature associated with lower reversible conversion efficiency, depending on the ambient temperature.
PACS: 05.70.Ce – Thermodynamic functions and equations of state / 84.60.-h – Direct energy conversion and storage / 88.05.De – Thermodynamic constraints on energy production
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.