The performance analysis of a micro-/nanoscaled quantum heat engine
AbstractA new model of micro-/nanoscaled heat engines consisting of two thin long tubes with the same length but different sizes of cross section, which are filled up with ideal quantum gases and operated between two heat reservoirs, is put forward. The working fluid of the heat engine cycle goes through four processes, which include two isothermal processes and two isobaric processes with constant longitudinal pressure. General expressions for the power output and efficiency of the cycle are derived, based on the thermodynamic properties of confined ideal quantum gases. The influence of the size effect on the power output and efficiency is discussed. The differences between the heat engines working with the ideal Bose gas and Fermi gas are revealed. The performance of the heat engines operating at weak gas degeneracy and high temperatures is further analyzed. The results obtained are more general and significant than those in the current literature.
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Bibliographic InfoArticle provided by Elsevier in its journal Physica A: Statistical Mechanics and its Applications.
Volume (Year): 391 (2012)
Issue (Month): 24 ()
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Web page: http://www.journals.elsevier.com/physica-a-statistical-mechpplications/
Micro-/nanoscaled heat engine; Confined quantum gas; Thermosize effect; Regenerative condition; Performance analysis;
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- Nie, Wenjie & He, Jizhou & Du, Jianqiang, 2009. "Performance characteristic of a Stirling refrigeration cycle in micro/nano scale," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 388(4), pages 318-324.
- SaygIn, Hasan & Sisman, Altug, 2001. "Brayton refrigeration cycles working under quantum degeneracy conditions," Applied Energy, Elsevier, vol. 69(2), pages 77-85, June.
- He, Jizhou & Chen, Jincan & Hua, Ben, 2002. "Influence of quantum degeneracy on the performance of a Stirling refrigerator working with an ideal Fermi gas," Applied Energy, Elsevier, vol. 72(3-4), pages 541-554, July.
- He, Jizhou & Xin, Yong & He, Xian, 2007. "Performance optimization of quantum Brayton refrigeration cycle working with spin systems," Applied Energy, Elsevier, vol. 84(2), pages 176-186, February.
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