steam engine

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A triple expansion compound steam engine is a type of mechanical device that utilizes high-pressure steam to produce rotational energy. It employs three pistons, each in a separate cylinder, to extract work from the steam at different pressure levels, resulting in increased thermal efficiency compared to single or double expansion engines. The process involves admitting steam into the first cylinder at high pressure, where it expands and pushes the first piston; then, the now lower-pressure steam moves on to the second cylinder for further expansion, and finally, to the third cylinder before being exhausted to atmosphere or used elsewhere in the system.