Water-tube boiler
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A high pressure watertube boiler is a type of boiler in which water circulates in tubes heated externally by fire. Fuel is burned inside the furnace, creating hot gas which boils water in the steam-ge
Swiss locomotive rebuilt with a Brotan boiler, in 1907
Brotan boiler
Babcock & Wilcox boiler
End-view of a Yarrow boiler
Three-drum boiler
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Three-drum boilers are a class of water-tube boiler used to generate steam, typically to power ships. They are compact and of high evaporative power, factors that encourage this use. Other boiler desi
Water-tube boiler
…refineries their bagasse waste. It is a horizontal drum type of boiler. Named after its designers, the then Poplar-based Yarrow Shipbuilders, this type of three-drum boiler has three drums in a delta formation connected by watertubes. The drums are linked by straight watertubes, allowing easy tube-cleaning. This does…
Three-drum boiler, casing removed
A flat of three Yarrow boilers
A Yarrow boiler, with the casing removed
A Royal Navy sailor cleans the water tubes inside a ship's boiler with a ribbon brush, c. 1939–1945.