triple expansion engine


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triple expansion engine

n
(General Engineering) (formerly) a steam engine in which the steam is expanded in three stages in cylinders of increasing diameter to accommodate the increasing volume of the steam
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Also on display is a Hathorn Davey triple expansion engine, usually considered an intermediary stage in the development between beam engines and internal combustion engines.
I think she was powered by the biggest up-and-down job (triple expansion engine) afloat.
The machine is typical of this class of triple expansion engine, with lift pumps below the floor driven by rods from the cross-head and force pumps driven from the end of the crankshaft.