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Period cutaway diagram of a triple-expansion steam engine installation, circa 1918. This particular diagram illustrates possible engine cutoff locations, after the Lusitania disaster and others made it clear that this was an important safety feature. A marine steam engine is a steam engine that is used to power a ship or boat.
Double-acting triple-expansion marine engine. High-pressure steam (red) passes through three stages, exhausting as low-pressure steam (blue) to the condenser. It is a logical extension of the compound engine (described above) to split the expansion into yet more stages to increase efficiency. The result is the multiple-expansion engine.
Engine No 6, also called The Sir William Prescott, has been restored to running order and is the largest fully operational triple-expansion steam engine in the world. [4] It may be seen in steam on various weekends throughout the year, and as a static display every Sunday between March and November. [ 5 ]
The reciprocating ships had two vertical triple-expansion steam engines, each driving one shaft, using steam provided by two Admiralty three-drum boilers. The engines produced a total of 2,400 indicated horsepower (1,800 kW) and gave a maximum speed of 16.5 knots (30.6 km/h; 19.0 mph).
Compounding was particularly used on stationary steam engines, marine steam engines, and on some steam locomotives starting from the 1850s, largely in continental Europe. [1] Three stage or triple expansion reciprocating steam engines, with three cylinders of increasing bore in line, were quite popular for steamship propulsion.
Advantage was powered by a one-shaft Fulton Iron Works vertical triple-expansion reciprocating steam engine rated at 1,600 shaft horsepower (1,200 kW), two Babcock and Wilcox "D" type boilers, generating a top speed of 12.2 kn (22.6 km/h; 14.0 mph), and two Turbo drive Ship's Service Generators.
It is a logical extension of the compound engine (described above) to split the expansion into yet more stages to increase efficiency. The result is the multiple-expansion engine. Such engines use either three or four expansion stages and are known as triple-and quadruple-expansion engines respectively. These engines use a series of cylinders ...
1 × 4-cycle triple-expansion reciprocating steam engine; 2,750 ihp (2,050 kW) Propulsion: Single shaft: Speed: 16 knots (30 km/h; 18 mph) Range: