Efficiency Bounds for Minimally Nonlinear Irreversible Heat Engines with Broken Time-Reversal Symmetry

Qin Liu, Wei Li, Min Zhang, Jizhou He, Jianhui Wang
2019 Entropy  
We study the minimally nonlinear irreversible heat engines in which the time-reversal symmetry for the systems may be broken. The expressions for the power and the efficiency are derived, in which the effects of the nonlinear terms due to dissipations are included. We show that, as within the linear responses, the minimally nonlinear irreversible heat engines can enable attainment of Carnot efficiency at positive power. We also find that the Curzon-Ahlborn limit imposed on the efficiency at
more » ... e efficiency at maximum power can be overcome if the time-reversal symmetry is broken.
doi:10.3390/e21070717 pmid:33267431 fatcat:62yfe4zbojg7vndrhcmm2rwbni