Implementing Black Hole as Efficient Power Plant *

Shao-Wen Wei,Yu-Xiao Liu

Fig. 5 (Color online) Rankine cycle with back pressure mechanism and $\tilde{T}_{2}=0.1$. The reduced work and heat for the engine are plotted in thin solid blue line and thin dashed blue line (left $y$-axis), respectively. The engine efficiency is plotted in thick solid red line (right $y$-axis).