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Compound Steam Engine
A compound steam engine unit is a type of steam engine where steam is expanded in two or more stages. A typical arrangement for a compound engine is that the steam is first expanded in a high-pressure ''(HP)'' cylinder, then having given up heat and losing pressure, it exhausts directly into one or more larger-volume low-pressure ''(LP)'' cylinders. Multiple-expansion engines employ additional cylinders, of progressively lower pressure, to extract further energy from the steam. Invented in 1781, this technique was first employed on a Cornish beam engine in 1804. Around 1850, compound engines were first introduced into Lancashire textile mills. Compound systems There are many compound systems and configurations, but there are two basic types, according to how HP and LP piston strokes are phased and hence whether the HP exhaust is able to pass directly from HP to LP ( Woolf compounds) or whether pressure fluctuation necessitates an intermediate "buffer" space in the form of a st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triple Expansion Engine Animation
Triple is used in several contexts to mean "threefold" or a " treble": Sports * Triple (baseball), a three-base hit * A basketball three-point field goal * A figure skating jump with three rotations * In bowling terms, three strikes in a row * In cycling, a crankset with three chainrings Places * Triple Islands, an uninhabited island group in Nunavut, Canada * Triple Island, British Columbia, Canada * Triple Falls (other), four waterfalls in the United States & Canada * Triple Glaciers, in Grand Teton National Park, Wyoming * Triple Crossing, Richmond, Virginia, believed to be the only place in North America where three Class I railroads cross * Triple Bridge, a stone arch bridge in Ljubljana, Slovenia Transportation * Kawasaki triple, a Japanese motorcycle produced between 1969 and 1980 * Triumph Triple, a motorcycle engine from Triumph Motorcycles Ltd * A straight-three engine * A semi-truck with three trailers Science and technology * Triple (mathematics) (3-tupl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doble Steam Car
The Doble steam car was an American steam car maker from 1909 to 1931. Its latter models of steam car, with fast-firing boiler and electric start, were considered the pinnacle of steam car development. The term "Doble steam car" comprises any of several makes of steam-powered automobile in the early 20th century, including Doble Detroit, Doble Steam Car, and Doble Automobile, severally called a "Doble" because of their founding by Abner Doble. History There were four Doble brothers: Abner, William, John, and Warren. Their father became wealthy, patenting the Doble Pelton wheel. All were at one time associated with the automobile company, with Abner, John, and Warren as the leading lights. Abner Doble built his first steam car between 1906 and 1909 while still in high school, with the assistance of his brothers. It was based on components salvaged from a wrecked White Motor Company steamer, driving a new engine of the Doble brothers' own design. It did not run particularly wel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horsepower
Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the mechanical horsepower (or imperial horsepower), which is about 745.7 watts, and the metric horsepower, which is approximately 735.5 watts. The term was adopted in the late 18th century by Scottish engineer James Watt to compare the output of steam engines with the power of draft horses. It was later expanded to include the output power of other types of piston engines, as well as turbines, electric motors and other machinery. The definition of the unit varied among geographical regions. Most countries now use the SI unit watt for measurement of power. With the implementation of the EU Directive 80/181/EEC on 1 January 2010, the use of horsepower in the EU is permitted only as a supplementary unit. History The development of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William McNaught (Glasgow)
William McNaught (1813–1881) was a Scottish engineer, from Glasgow, who patented a compound steam engine in 1845. This was a technique of improving the efficiency of a standard simple Boulton & Watt beam engine. The engine was compounded by adding a high-pressure cylinder between the support column and the flywheel, on the side opposite the low-pressure cylinder. This improvement could be retrospectively fitted to existing engines. Family William McNaught was born on 27 May 1813 at Paisley, Renfrewshire, Scotland, son of John McNaught, the inventor of the McNaught indicator. Engine building McNaught patented his compound steam engine in 1845 (Patent no. 11001). He relocated to Manchester in 1849. The Robertson Street workshop was operated by William McNaught & Son as "Makers of Steam-Engine Indicators, Steam Gauges, etc" at 12 Hampden Terrace, Glasgow, at least until 1895. MacNaught died in Chorlton upon Medlock, Manchester, on 8 January 1881, leav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waal (river)
The Waal (Dutch name, ) is the main distributary branch of the river Rhine flowing approximately through the Netherlands. It is the major waterway connecting the port of Rotterdam to Germany. Before it reaches Rotterdam, it joins with the Afgedamde Maas near Woudrichem to form the Boven Merwede. Along its length, Nijmegen, Tiel, Zaltbommel and Gorinchem are towns of importance with direct access to the river. The river, which is the main channel in the Rhine–Meuse–Scheldt delta system, carries 65% of the total flow of the Rhine. History The name Waal, in Roman times called ''Vacalis, Vahalis'' or ''Valis'', later ''Vahal'', is of Germanic origin and is named after the many meanders in the river ( gmw, wôh, lit=crooked). It is, in turn, thought to have inspired early Dutch settlers of the Hudson Valley region in New York to name the Wallkill River after it (''Waalkil'' "Waal Creek"). The current river shows little signs of these great bends, since the river has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerhard Moritz Roentgen
Gerhard Moritz Roentgen (* 7 May 1795 in Esens in Ostfriesland; † 28 October 1852 in Santpoort near Velsen in North Holland) was a Dutch Navy officer, machine building engineer and ship builder. As of 1823 he was involved in founding the Nederlandsche Stoomboot Maatschappij (NSM). At first he was one of NSM two chief executives. Later on, he was the only executive till 1849. The invention of the marine compound steam engine is Roentgen's main scientific achievement. Early life Youth and service in the navy Gerhard Moritz Roentgen, known in the Netherlands as Gerhard Mauritz Roentgen, was the fourth son of Ludwig Roentgen and Sophia Margaretha Tischbein. Ludwig was a minister and the inspector of the orphanage and poor house in Esens, Ostfriesland. Ludwig's father descended from the artistic cabinet maker family Roentgen from Neuwied on the Rhine. Till his 13th year, Roentgen lived in Esens, which had become part of the Kingdom of Holland by then. In 1808 he joined the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agrippina (1827)
''Agrippina'' was a steamboat designed for the Middle Rhine. On delivery she was found to be too heavy, and was returned to her builder NSM, which tried to use her as a freighter on the Lower Rhine. When this failed too, ''Agrippina''s engines were used to create the compound steam engine of the tugboat , creating the first effective compound steam engines. In 1829 ''Agrippina'' was the first towed dumb barge on the Rhine. After a rebuilt, she became the first steamboat to tow an iron barge on the Rhine in 1841. Context Preußisch-Rheinische Dampfschiffahrts-Gesellschaft (PRDG) In October 1825 the Preußisch-Rheinische Dampfschiffahrts-Gesellschaft (PRDG) ordered two steamboats at the Nederlandsche Stoomboot Maatschappij (Dutch Steamboat Comp.) A later overview suggests that ''Agrippina'' was part of this initial order by the PRDG. It also showed that she was comparatively large for a steamboat. Already in 1828, PRDG's plan was to use ''Agrippina'' as the third boat between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hercules (1829 Ship)
''Hercules'' was a Dutch steam paddle tugboat. She was also the first vessel to effectively use a compound steam engine. In about 1890, a discussion about the invention of the compound steam engine made that Fijenoord brought up the blueprints of Hercules. These proved that Gerhard Moritz Roentgen had invented the compound steam engine. Construction Context In late 1815 the Dutch navy officer Gerhard Moritz Roentgen had arrived in England on board a ship of the line that was destined to the Dutch East Indies. This ship was in such a bad state that it did not get further than Portsmouth. It all led to Roentgen getting multiple assignments to study the British shipbuilding and iron industry. Roentgen became an expert in these fields, and in early 1824 Roentgen and others founded the Nederlandsche Stoomboot Maatschappij (NSM). In April 1824 Roentgen sent in a report about the use of steam power on warships. He proposed that the government should promote or execute three proje ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cast Iron
Cast iron is a class of iron– carbon alloys with a carbon content more than 2%. Its usefulness derives from its relatively low melting temperature. The alloy constituents affect its color when fractured: white cast iron has carbide impurities which allow cracks to pass straight through, grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the material breaks, and ductile cast iron has spherical graphite "nodules" which stop the crack from further progressing. Carbon (C), ranging from 1.8 to 4 wt%, and silicon (Si), 1–3 wt%, are the main alloying elements of cast iron. Iron alloys with lower carbon content are known as steel. Cast iron tends to be brittle, except for malleable cast irons. With its relatively low melting point, good fluidity, castability, excellent machinability, resistance to deformation and wear resistance, cast irons have become an engineering material with a wide range of applications a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Trevithick
Richard Trevithick (13 April 1771 – 22 April 1833) was a British inventor and mining engineer. The son of a mining captain, and born in the mining heartland of Cornwall, Trevithick was immersed in mining and engineering from an early age. He was an early pioneer of steam-powered road and rail transport, and his most significant contributions were the development of the first high-pressure steam engine and the first working railway steam locomotive. The world's first locomotive-hauled railway journey took place on 21 February 1804, when Trevithick's unnamed steam locomotive hauled a train along the tramway of the Penydarren Ironworks, in Merthyr Tydfil, Wales. Turning his interests abroad Trevithick also worked as a mining consultant in Peru and later explored parts of Costa Rica. Throughout his professional career he went through many ups and downs and at one point faced financial ruin, also suffering from the strong rivalry of many mining and steam engineers of the day. Du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Watt
James Watt (; 30 January 1736 (19 January 1736 OS) – 25 August 1819) was a Scottish inventor, mechanical engineer, and chemist who improved on Thomas Newcomen's 1712 Newcomen steam engine with his Watt steam engine in 1776, which was fundamental to the changes brought by the Industrial Revolution in both his native Great Britain and the rest of the world. While working as an instrument maker at the University of Glasgow, Watt became interested in the technology of steam engines. He realised that contemporary engine designs wasted a great deal of energy by repeatedly cooling and reheating the cylinder. Watt introduced a design enhancement, the separate condenser, which avoided this waste of energy and radically improved the power, efficiency, and cost-effectiveness of steam engines. Eventually, he adapted his engine to produce rotary motion, greatly broadening its use beyond pumping water. Watt attempted to commercialise his invention, but experienced great financial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Newcomen
Thomas Newcomen (; February 1664 – 5 August 1729) was an English inventor who created the atmospheric engine, the first practical fuel-burning engine in 1712. He was an ironmonger by trade and a Baptist lay preacher by calling. He was born in Dartmouth, in Devon, England, to a merchant family and baptised at St. Saviour's Church on 28 February 1664. In those days flooding in coal and tin mines was a major problem. Newcomen was soon engaged in trying to improve ways to pump out the water from such mines. His ironmonger's business specialised in designing, manufacturing and selling tools for the mining industry. Religious life Thomas Newcomen was a lay preacher and a teaching elder in the local Baptist church. After 1710 he became the pastor of a local group of Baptists. His father had been one of a group who brought the well-known Puritan John Flavel to Dartmouth. Later one of Newcomen's business contacts in London, Edward Wallin, was another Baptist minister who ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
