Authors
Tim Schmiedl, Udo Seifert
Publication date
2007/12/10
Journal
Europhysics letters
Volume
81
Issue
2
Pages
20003
Publisher
IOP Publishing
Description
We study a class of cyclic Brownian heat engines in the framework of finite-time thermodynamics. For infinitely long cycle times, the engine works at the Carnot efficiency limit producing, however, zero power. For the efficiency at maximum power, we find a universal expression, different from the endoreversible Curzon-Ahlborn efficiency. Our results are illustrated with a simple one-dimensional engine working in and with a time-dependent harmonic potential.
Total citations
Scholar articles
T Schmiedl, U Seifert - Europhysics letters, 2007