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Onsager coefficients of a finite-time Carnot cycle
| Title: | Onsager coefficients of a finite-time Carnot cycle |
| Authors: | Izumida, Yuki Browse this author | | Okuda, Koji Browse this author |
| Keywords: | Carnot cycle | | heat engines | | thermodynamics |
| Issue Date: | Aug-2009 |
| Publisher: | American Physical Society |
| Journal Title: | Physical review E |
| Volume: | 80 |
| Issue: | 2 |
| Start Page: | 021121 |
| Publisher DOI: | 10.1103/PhysRevE.80.021121 |
| PMID: | 19792091 |
| Abstract: | We study a finite-time Carnot cycle of a weakly interacting gas which we can regard as a nearly ideal gas in the limit of Th-Tc → 0 where Th and Tc are the temperatures of the hot and cold heat reservoirs, respectively. In this limit, we can assume that the cycle is working in the linear-response regime and can calculate the Onsager coefficients of this cycle analytically using the elementary molecular kinetic theory. We reveal that these Onsager coefficients satisfy the so-called tight-coupling condition and this fact explains why the efficiency at the maximal power ηmax of this cycle can attain the Curzon-Ahlborn efficiency from the viewpoint of the linear-response theory. |
| Rights: | ©2009 The American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/39348 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 奥田 浩司
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