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Field-tube Boiler
A Field-tube boiler (also known as a bayonet tube) is a form of water-tube boiler where the water tubes are single-ended. The tubes are closed at one end, and they contain a concentric inner tube. Flow is thus separated into the colder inner flow down the tube and the heated flow upwards through the outer sleeve. As Field tubes are thus dependent on thermo-syphon flow ''within'' the tube, they must thus always have some vertical height to encourage the flow. In most designs they are mounted near-vertically, to encourage this. They are named after Edward Field, their inventor, and were originally developed for steam fire-engines where speed of raising steam was important. More recently, Field-tube boilers have been most widely used by French manufacturers, either for small vertical boilers, or as a marine boiler. The use of this type of Field tube has also been researched for the transfer of heat from nuclear reactors, vacuum condensers and heat exchangers. The thimble-tube boi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boiler Field Tube, Section
A boiler is a closed pressure vessel, vessel in which fluid (generally water) is heated. The fluid does not necessarily boiling, boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including Boiler (water heating), water heating, central heating, boiler (power generation), boiler-based power generation, cooking, and sanitation. Heat sources In a fossil fuel power plant using a steam cycle for power generation, the primary heat source will be combustion of Pulverized coal-fired boiler, coal, oil, or natural gas. In some cases byproduct fuel such as the carbon monoxide rich offgasses of a coke battery can be burned to heat a boiler; biofuels such as bagasse, where economically available, can also be used. In a nuclear power plant, boilers called Steam generator (nuclear power), steam generators are heated by the heat produced by nuclear fission. Where a large volume of hot gas is available from some process, a heat recovery ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Babcock & Wilcox Boiler
A high pressure watertube boiler (also spelled water-tube and water tube) is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which boils water in the steam-generating tubes. In smaller boilers, additional generating tubes are separate in the furnace, while larger utility boilers rely on the water-filled tubes that make up the walls of the furnace to generate steam. The heated water/steam mixture then rises into the steam drum. Here, saturated steam is drawn off the top of the drum. In some services, the steam passes through tubes in the hot gas path, (a superheater) to become superheated. Superheated steam is defined as steam that is heated above the boiling point at a given pressure. Superheated steam is a dry gas and therefore is typically used to drive turbines, since water droplets can severely damage turbine blades. Saturated water at the bottom of the steam drum returns to the lower dr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service. From the middle decades of the 17th century, and through the 18th century, the Royal Navy vied with the Dutch Navy and later with the French Navy for maritime supremacy. From the mid 18th century, it was the world's most powerful navy until the Second World War. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superiority globally. Owing to this historical prominence, it is common, even among non-Britons, to ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New York Times
''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid digital subscribers. It also is a producer of popular podcasts such as '' The Daily''. Founded in 1851 by Henry Jarvis Raymond and George Jones, it was initially published by Raymond, Jones & Company. The ''Times'' has won 132 Pulitzer Prizes, the most of any newspaper, and has long been regarded as a national " newspaper of record". For print it is ranked 18th in the world by circulation and 3rd in the U.S. The paper is owned by the New York Times Company, which is publicly traded. It has been governed by the Sulzberger family since 1896, through a dual-class share structure after its shares became publicly traded. A. G. Sulzberger, the paper's publisher and the company's chairman, is the fifth generation of the family to head the pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bath Iron Works
Bath Iron Works (BIW) is a major United States shipyard located on the Kennebec River in Bath, Maine, founded in 1884 as Bath Iron Works, Limited. Since 1995, Bath Iron Works has been a subsidiary of General Dynamics. It is the fifth-largest defense contractor in the world as of 2008. BIW has built private, commercial, and military vessels, most of which have been ordered by the United States Navy. History Bath Iron Works was incorporated in 1884 by General Thomas W. Hyde, a native of Bath who served in the American Civil War. After the war, he bought a shop that made windlasses and other iron hardware for the wooden ships built in Bath's many shipyards. He expanded the business by improving its practices, entering new markets, and acquiring other local businesses. By 1882, Hyde Windlass was eyeing the new and growing business of iron shipbuilding, and it incorporated as Bath Iron Works in 1884. On February 28, 1890, BIW won its first contract for complete vessels: two iron gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Fantome (1901)
HMS ''Fantome'' was an sloop launched in 1901, transferred to the Royal Australian Navy in 1914, returned to the Royal Navy in 1920, and sold in 1924. She was the fourth ship of the Royal Navy to bear the name, which is from the French ''fantôme'', meaning "ghost". Design ''Fantome'' was constructed of steel to a design by William White, the Royal Navy Director of Naval Construction. Propulsion was provided by a three-cylinder vertical triple expansion steam engine developing and driving twin screws. The ''Cadmus'' class was an evolution of the , carrying more coal, which in turn gave a greater length and displacement. This class comprised the very last screw sloops built for the Royal Navy. Sail plan As designed and built the class was fitted with a barquentine-rigged sailplan. After was lost in a gale in 1901, the Admiralty abandoned sails entirely.Fifty Years in the Royal Navy'', Admiral Sir Percy Scott, Bt., John Murray, London, 1919, p. 37 ''Fantome'' had a gant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Espiegle (1900)
Eight ships of the Royal Navy have borne the name HMS ''Espiegle'' * was a 16-gun French brig-sloop, launched at Bayonne in 1788. and captured her off Ushant on 30 November 1793. She was sold in 1802. * was a French 12-gun aviso launched in 1793 at Saint-Malo. captured her in the Antilles on 16 March 1794. She was commissioned under Lieutenant John Fishley. The Navy sold her in 1800. * was a 16-gun sloop, formerly the civilian vessel ''Wimbury'' (or ''Wembury''), launched at Barnstaple in 1803. The Admiralty purchased her in 1804 and sold her in 1811 for breaking up. * was an 18-gun launched in 1812 and sold in 1832. * was a 12-gun brig launched in 1844 and sold in 1861. * was a composite screw sloop launched in 1880. She became a boom vessel in 1899, was renamed HMS ''Argo'' in 1904 and was sold in 1921. * was a launched in 1900 and sold in 1923. * was an launched in 1942 and broken up in 1967. A gun-boat named ''Espiegle'' served in the navy's Egyptian campaign between 8 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Seagull (1889)
HMS ''Seagull'' was a of the British Royal Navy. She was built at Chatham Dockyard from 1888–1891. She was converted to a minesweeper in 1908–1909 and continued these duties during the First World War. ''Seagull'' was sunk in a collision with a merchant ship on 30 September 1918. Design and construction The ''Sharpshooter''-class was designed under the leadership of William Henry White, the Director of Naval Construction to be faster and more seaworthy than the preceding prototype torpedo gunboat, and the three s, while carrying a heavier armament. As torpedo gunboats, they were intended to defend the fleet from attack by torpedo boats, while being capable of carrying out torpedo attacks themselves. The ''Sharpshooter''s were larger than the preceding ships, with a raised forecastle to improve seakeeping. They were long overall and between perpendiculars, with a beam of and a draught of . Displacement was . Two triple-expansion steam engines, fed by four locomotive bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Sheldrake
HMS ''Sheldrake'' may refer to one of several Royal Navy ships named after the Sheldrake duck: * was a launched in 1806 and sold in 1817. * was a launched in 1825 that became a Post Office Packet Service packet, sailing out of Falmouth, Cornwall. She was sold in 1855. * was a gunboat of the Albacore class built by W & H Pitcher in Northfleet and launched in 1855 and sold in 1865 in Montevideo. In 1861 she was deployed in the South Atlantic during the Christie crisis with Brazil. * was a launched in 1875. Renamed HMS ''Drake'' in 1888 and ''WV 29'' in 1893, the vessel reverted to HMS ''Drake'' in 1906 before being sold later that year. * was a launched in 1889 and sold for breaking in 1907. * was an launched in 1911 and sold for breaking up in 1921. * was a sloop A sloop is a sailboat with a single mast typically having only one headsail in front of the mast and one mainsail aft of (behind) the mast. Such an arrangement is called a fore-and-aft rig, and can be rigged as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Cruiser Varyag (1899)
''Varyag'' (also spelled ''Variag''; see Varangian for the meaning of the name) (russian: кре́йсер «Варя́г») was a Russian protected cruiser. ''Varyag'' became famous for her crew's stoicism at the Battle of Chemulpo Bay. Construction and design In 1897, the Russian Admiralty, as part of a programme to reinforce the Imperial Russian Navy's Far East Fleet, published specifications for a fast protected cruiser, capable of commerce raiding. The ships were required to be armed with 152 mm (6-inch) quick-firing guns, and to have a speed of . Russian shipyards were already busy, and the Imperial Admiralty placed an order with the American shipyard William Cramp & Sons of Philadelphia on 11 April 1898 to build a single cruiser, ''Varyag'' against this specification. Single ships were also ordered from the German shipyards Germaniawerft () and AG Vulcan () against these specifications. ''Varyag'' was laid down in October 1898, was launched on 31 October 1899 and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Bart
Jean Bart (; ; 21 October 1650 – 27 April 1702) was a French Admiral, naval commander and privateer. Early life Jean Bart was born in Dunkirk, France, Dunkirk in 1650 to a seafaring family, the son of Jean-Cornil Bart (c. 1619-1668) who has been described variously as a fisherman or French corsairs, corsair commander serving for the Dutch Republic. His grandfather, Cornil weus, was a vice-admiral and fought the Dutch on behalf of Spain at the beginning of the Eighty Years' War. His great-grandfather, Michel Jacobsen (1560-1632) distinguished himself in the service of the Spanish crown, bringing back the Invincible Armada after his failed attempt to invade England in 1588. He was appointed vice-admiral by Philip IV of Spain. In 1622, his great-uncle, Jan Jacobsen, also in the service of Spain, blew himself up with his ship, the ''Saint-Vincent'', rather than surrender. He almost certainly spoke French Flemish, Dutch, at that time the native language in the region, and his birth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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