Performance optimization and parameter design of a benzene molecule heat engine

被引：4

作者：

Li, Haidong ^{[1
]}

Wang, Yuan ^{[1
]}

Hao, Haoshan ^{[1
]}

Liu, Shaohui ^{[1
]}

Ding, Jun ^{[1
]}

机构：

[1] Henan Univ Engn, Coll Sci, Zhengzhou 451191, Henan, Peoples R China

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2019年 / 513卷

基金：

中国国家自然科学基金;

关键词：

Benzene molecule; Heat engine; Power; Efficiency; THERMOELECTRIC FIGURE; TRANSPORT;

D O I：

10.1016/j.physa.2018.08.162

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using non-equilibrium Green's functions, a new model of heat engine consisting of a benzene molecule junction coupled with two heat reservoirs is studied. The effect of magnetic field on figure of merit is discussed. The existing of magnetic field can enhance the thermoelectric performance. The influences of the gate and bias voltages on output power and the efficiency are revealed, and the maximum output power and efficiency are obtained. We have not only obtained parameters that optimize power and efficiency, but also given an interval range that can improve the maximum power. The relative change in the maximum output power increases with the increasing of Carnot efficiency, while the corresponding efficiency decreases. The results can provide a theoretical guidance for the optimal operation of the benzene molecule junction heat engine. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：798 / 807

页数：10

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