arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0710.4097cond-mat.stat-mech
收藏

最大功率效率:随机热机的解析可解模型

Efficiency at maximum power: An analytically solvable model for stochastic heat engines

Tim Schmiedl, Udo Seifert

摘要:

在有限时间热力学框架下研究了一类循环布朗热机。对于无限长的循环时间,发动机在卡诺效率极限下工作,但是产生零功率。对于最大功率下的效率,我们发现了一个普遍的表达式,不同于内可逆的Curzon-Ahlborn效率。我们的结果说明了一个简单的一维引擎的工作,并与时间相关的谐波势。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑