Long Rui, Liu Zhichun, Liu Wei
School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2014 Jun;89(6):062119. doi: 10.1103/PhysRevE.89.062119. Epub 2014 Jun 12.
A performance optimization for minimally nonlinear heat engines and refrigerators is conducted under an optimization criterion of Ω. The results show that under tight-coupling conditions, the efficiency and coefficient of performance (COP) bounds in asymmetric dissipation limits are the same as those obtained by de Tomas et al. [Phys. Rev. E 87, 012105 (2013)] for low dissipation heat devices. The efficiency bounds for heat engines under nontight-coupling conditions are also analyzed and the experimental results lie between theoretical results obtained under different coupling strengths. For refrigerators, the theoretical results are also in good agreement with some observed results. The efficiency and COP bounds under the Ω criterion are refined, which are closer to real heat engines and refrigerators.
在Ω优化准则下，对最小非线性热机和制冷机进行了性能优化。结果表明，在紧密耦合条件下，非对称耗散极限中的效率和性能系数（COP）界限与de Tomas等人[《物理评论E》87, 012105 (2013)]针对低耗散热设备所得到的界限相同。还分析了非紧密耦合条件下热机的效率界限，实验结果介于不同耦合强度下获得的理论结果之间。对于制冷机，理论结果也与一些观测结果高度吻合。在Ω准则下的效率和COP界限得到了细化，更接近实际的热机和制冷机。
