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In the United States, many boilermakers are employed in repairing, repiping, and re-tubing commercial steam and hot water boilers used for heating and domestic hot water in commercial buildings and multi-family dwellings. [1] Sometimes these boilers are referred to as pressure vessels. Generally, a pressure vessel is a storage tank or vessel ...
William Galloway was born on 5 March 1768 at Coldstream in the Scottish Borders, became a millwright and moved to Manchester in 1790. [3] He was one of many Scots who moved to England seeking to gain from the rapid expansion of industry there; others included William Murdoch and James Watt, who settled in Birmingham, and fellow settlers in the Manchester area, John Kennedy, James McConnel and ...
Inlet-outlet cover of a valve for a nuclear power station produced using investment casting. Investment casting is an industrial process based on lost-wax casting, one of the oldest known metal-forming techniques. [1] The term "lost-wax casting" can also refer to modern investment casting processes.
Internally rifled boiler tubes are used to evaporate water into steam inside boilers of thermal power plants. Because of their internally rifled shape, they are more efficient. The boiling crisis takes place later, thus allowing for greater heat transfer between the pipe and the fluid inside the pipe.
Illustration of stepwise bronze casting by the lost-wax method. Lost-wax casting – also called investment casting, precision casting, or cire perdue (French: [siʁ pɛʁdy]; borrowed from French) [1] – is the process by which a duplicate sculpture (often a metal, such as silver, gold, brass, or bronze) is cast from an original sculpture.
Recovery boilers were soon licensed and produced in Scandinavia and Japan. These boilers were built by local manufacturers from drawings and with instructions of licensors. One of the early Scandinavian Tomlinson units employed an 8.0 m high furnace that had 2.8×4.1 m furnace bottom which expanded to 4.0×4.1 m at superheater entrance. [3]
A raised location on the top of the main boiler drum, providing a high point from which to collect dry steam, reducing the risk of priming. Downcomer Large external pipes in many water-tube boilers, carrying unheated cold water from the steam drum down to the water drum as part of the circulation path. Drowned tube
Removable insulation blankets can be installed on many indoor and outdoor components such as boilers, steam traps, pipes, valves, flanges, and more. [2] They are typically used to prevent heat from escaping hot components; however, they can also be used to prevent freezing or warming of cold components.