open access

https://hdl.handle.net/2115/48547

Efficiency at maximum power of minimally nonlinear irreversible heat engines

英語

2012-01

European Physical Society

EPL (Europhysics Letters)

97(1)

10004

We propose the minimally nonlinear irreversible heat engine as a new general theoretical model to study the efficiency at the maximum power η* of heat engines operating between the hot heat reservoir at the temperature Th and the cold one at Tc (Tc ≤ Th). Our model is based on the extended Onsager relations with a new nonlinear term meaning the power dissipation. In this model, we show that η* is bounded from the upper side by a function of the Carnot efficiency ηC ≡ 1 - Tc/Th as η* ≤ ηC/(2 - ηC). We demonstrate the validity of our theory by showing that the low-dissipation Carnot engine can easily be described by our theory.

学術雑誌論文

Accepted Manuscript

0295-5075