Translations:Thermodynamic and Mechanical Study/162/en

The gas leaves $S$, passes through the heat-in exchanger $H_i$, where it receives heat from its external reservoir, crosses the $H_i\to L$ check valve, and then enters the receiving cylinder $L$. The $L+H_o$ pair remains quasi-pressure-equalized if the criterion ${\epsilon }_P\ll 1$ is satisfied.