triple-expansion steam engine
-
This Working Steam Engine Is The Size Of An Apartment Block
The world’s largest functioning triple-expansion steam engine is an unbelievably massive beast of a machine. For 77 years, the 19m high engine — weighing in at 900 tonnes! — powered gigantic flywheels and crankshafts that pumped millions upon millions of gallons of water from west to north London. It was decommissioned in 1980, but brought…