中国物理B ›› 2012, Vol. 21 ›› Issue (2): 20513-020513.doi: 10.1088/1674-1056/21/2/020513

• GENERAL • 上一篇    下一篇

涂展春   

  • 收稿日期:2011-09-29 修回日期:2011-11-02 出版日期:2012-01-30 发布日期:2012-01-30
  • 通讯作者: 涂展春,tuzc@bnu.edu.cn E-mail:tuzc@bnu.edu.cn

Recent advance on the efficiency at maximum power of heat engines

Tu Zhan-Chun(涂展春)   

  1. Department of Physics, Beijing Normal University, Beijing 100875, China
  • Received:2011-09-29 Revised:2011-11-02 Online:2012-01-30 Published:2012-01-30
  • Contact: Tu Zhan-Chun,tuzc@bnu.edu.cn E-mail:tuzc@bnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11075015) and the Fundamental Research Funds for the Central Universities.

Abstract: This review reports several key advances on the theoretical investigations of efficiency at maximum power of heat engines in the past five years. The analytical results of efficiency at maximum power for the Curzon-Ahlborn heat engine, the stochastic heat engine constructed from a Brownian particle, and Feynman's ratchet as a heat engine are presented. It is found that: the efficiency at maximum power exhibits universal behavior at small relative temperature differences; the lower and the upper bounds might exist under quite general conditions; and the problem of efficiency at maximum power comes down to seeking for the minimum irreversible entropy production in each finite-time isothermal process for a given time.

Key words: efficiency at maximum power, heat engine, universality, bounds

中图分类号:  (Nonequilibrium and irreversible thermodynamics)

  • 05.70.Ln