摘要
The Carnot-like heat engines are classified into three types (normal-, sub- and, super-dissipative) accord- ing to relations between the minimum irreversible entropy production in the "isothermal" processes and the time for completing those processes. The efficiencies at maximum power of normal-, sub- and super-dissipative Carnot-like heat engines are proved to be bounded between ηc/2 and ηc/ (2 - ηc ), ηc /2 and ηc, 0 and ηc/ (2 - ηc ), respectively. These bounds are also shared by linear, sub- and super-linear irreversible Carnot-like engines [Tu and Wang, Europhys. Left. 98 (2012) 40001] although the dissipative engines and the irreversible ones are inequivalent to each other.
基金
Supported by the National Natural Science Foundation of China under Grant No. 11075015
the Fundamental Research Funds for the Central Universities