Consistency of optimizing finite-time Carnot engines with the low-dissipation model in the two-level atomic heat engine

Yu-Han Ma,C P Sun,Hui Dong

Figure 3. The normalized power of the engine $\widetilde{P}=P/{P}_{\max }$ as a function of τh/tr. The blue solid line, the orange dash-dotted line, and the purple dashed line are respectively obtained with ηC = 0.1, ηC = 0.12, and ηC = 0.15. In this example, we choose ${\omega }_{{\rm{h}}}^{{\rm{i}}}=1$, ${\omega }_{{\rm{h}}}^{{\rm{f}}}=0.9$, γh = 1, and Th = 10 with changing Tc = 9, 8.8 and 8.5. The relaxation time is ${t}_{{\rm{r}}}={\omega }_{{\rm{h}}}^{{\rm{i}}}/\left(2{\gamma }_{{\rm{h}}}{T}_{{\rm{h}}}\right)=0.05$.