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A single operable Lancashire boiler provides steam to the engines. [ 2 ] Number 1 engine , built by Boulton and Watt in 1812 and rebuilt as a Cornish engine in the 1840s, is a single-acting, condensing engine with a bore of 42.25 inches (1,073 mm), a stroke of 7 feet (2,100 mm) and indicated power of 38.6 kW (51.8 hp).
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Boiler design is the process of designing boilers used for various purposes. The main function of a boiler is to heat water to generate steam. Steam produced in a boiler can be used for a variety of purposes including space heating, sterilisation, drying, humidification and power generation. The temperature or condition of steam required for ...
A shell or flued boiler is an early and relatively simple form of boiler used to make steam, usually for the purpose of driving a steam engine. The design marked a transitional stage in boiler development, between the early haystack boilers and the later multi-tube fire-tube boilers .
During the test, the two 30 feet (9.1 m) by 8 feet (2.4 m) Lancashire boilers with 3 ft 2 in diameter flues produced steam at 156 psi. There were Galloway tubes in the flues and behind the boilers was an economiser with 288 pipes. Water was delivered to the boilers at 304 °F (151 °C).
The only railway use of water-tube boilers in any numbers was the Brotan boiler, invented by Johann Brotan in Austria in 1902, and found in rare examples throughout Europe, although Hungary was a keen user and had around 1,000 of them. Like the Baldwin, it combined a water-tube firebox with a fire-tube barrel.
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Steam for the pumping engines and auxiliary engines is raised in five Lancashire boilers, with the first set of boilers being made by Robert Stephenson and co. In normal operation only two out of the five boilers would be in steam with one on hot reserve and the other two having maintenance work. The boilers were on an 8 weekly rotation.