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Steeple Compound Engine
A steeple compound engine is a form of tandem compound steam engine that is constructed as an vertical steam engine, inverted vertical engine. Because of their great height, they became known as "steeple (architecture), steeple" engines. Compound engines Compound engines have either two or three cylinders, in which the steam is expanded in turn. The exhaust of the high-pressure or HP cylinder feeds the low-pressure or LP cylinder. Three cylinder engines also had an intermediate-pressure or IP cylinder, but these were less common than two cylinder engines.. In the tandem compound the cylinders are arranged end to end on a common axis (in this case, vertical) with both pistons mounted on the same rod and moving together. Each cylinder has independent valves and valve gear. The pipe connecting them may be enlarged to form a 'receiver', a reservoir for steam at the intermediate pressure. This improves the efficiency of compound engines. Other than their great height, the tandem comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fitchburg Steeple Compound Engine (New Catechism Of The Steam Engine, 1904)
Fitchburg may refer to: Places in the United States of America * Fitchburg, California * Fitchburg, Kentucky * Fitchburg, Massachusetts * Fitchburg, Michigan * Fitchburg, Wisconsin Transportation *Fitchburg Railroad, named for the Massachusetts city *Fitchburg (MBTA station), current station **Fitchburg Line, the train line which ends there {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simple Expansion Steam Engine
A compound engine is an engine that has more than one stage for recovering energy from the same working fluid, with the exhaust from the first stage passing through the second stage, and in some cases then on to another subsequent stage or even stages. Originally invented as a means of making steam engines more efficient, the compounding of engines by use of several stages has also been used on internal combustion engines and continues to have niche markets there. The stages of a compound engine may be either of differing or of similar technologies, for example: * In a turbo-compound engine, the exhaust gas from the cylinders passes through a turbine, the two stages being dissimilar. * In a compound steam locomotive, the steam passes from the high-pressure cylinder or cylinders to the low-pressure cylinder or cylinders, the two stages being similar. * In a triple-expansion steam engine, the steam passes through three successive cylinders of increasing size and decreasing pressu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stationary Steam Engines
In addition to its common meaning, stationary may have the following specialized scientific meanings: Mathematics * Stationary point * Stationary process * Stationary state Meteorology * A stationary front is a weather front that is not moving Physics * A time-invariant system quantity, such as a constant position or temperature * A steady state physical process, such as a vibration at constant amplitude and frequency or a steady fluid flow * A stationary wave is a standing wave * Stationary spacetime In general relativity, specifically in the Einstein field equations, a spacetime is said to be stationary if it admits a Killing vector that is asymptotically timelike. Description and analysis In a stationary spacetime, the metric tensor comp ... in general relativity Other uses * "Stationary", a song from ''Copacetic'' (Knuckle Puck album) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Society Of Mechanical Engineers
The American Society of Mechanical Engineers (ASME) is an American professional association that, in its own words, "promotes the art, science, and practice of multidisciplinary engineering and allied sciences around the globe" via "continuing education, training and professional development, codes and standards, research, conferences and publications, government relations, and other forms of outreach." ASME is thus an engineering society, a standards organization, a research and development organization, an advocacy organization, a provider of training and education, and a nonprofit organization. Founded as an engineering society focused on mechanical engineering in North America, ASME is today multidisciplinary and global. ASME has over 85,000 members in more than 135 countries worldwide. ASME was founded in 1880 by Alexander Lyman Holley, Henry Rossiter Worthington, John Edison Sweet and Matthias N. Forney in response to numerous steam boiler pressure vessel failures. Kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Lakes
The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five lakes, which are Lake Superior, Superior, Lake Michigan, Michigan, Lake Huron, Huron, Lake Erie, Erie, and Lake Ontario, Ontario and are in general on or near the Canada–United States border. Hydrologically, lakes Lake Michigan–Huron, Michigan and Huron are a single body joined at the Straits of Mackinac. The Great Lakes Waterway enables modern travel and shipping by water among the lakes. The Great Lakes are the largest group of freshwater lakes on Earth by total area and are second-largest by total volume, containing 21% of the world's surface fresh water by volume. The total surface is , and the total volume (measured at the low water datum) is , slightly less than the volume of Lake Baikal (, 22–23% of the world's surface fresh water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Steam Engine
A marine steam engine is a steam engine that is used to power a ship or boat. This article deals mainly with marine steam engines of the reciprocating type, which were in use from the inception of the steamboat in the early 19th century to their last years of large-scale manufacture during World War II. Reciprocating steam engines were progressively replaced in marine applications during the 20th century by steam turbines and marine diesel engines. History The first commercially successful steam engine was developed by Thomas Newcomen in 1712. The steam engine improvements brought forth by James Watt in the later half of the 18th century greatly improved steam engine efficiency and allowed more compact engine arrangements. Successful adaptation of the steam engine to marine applications in England would have to wait until almost a century after Newcomen, when Scottish engineer William Symington built the world's "first practical steamboat", the '' Charlotte Dundas'', in 1802. Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skinner Unaflow Engine
The uniflow type of steam engine uses steam that flows in one direction only in each half of the cylinder. Thermal efficiency is increased by having a temperature gradient along the cylinder. Steam always enters at the hot ends of the cylinder and exhausts through ports at the cooler centre. By this means, the relative heating and cooling of the cylinder walls is reduced. Design details Steam entry is usually controlled by poppet valves (which act similarly to those used in internal combustion engines) that are operated by a camshaft. The inlet valves open to admit steam when minimum expansion volume has been reached at the start of the stroke. For a period of the crank cycle, steam is admitted, and the poppet inlet is then closed, allowing continued expansion of the steam during the stroke, driving the piston. Near the end of the stroke, the piston will uncover a ring of exhaust ports mounted radially around the centre of the cylinder. These ports are connected by a manifold an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Generation
Electricity generation is the process of generating electric power from sources of primary energy. For utilities in the electric power industry, it is the stage prior to its delivery (transmission, distribution, etc.) to end users or its storage (using, for example, the pumped-storage method). Electricity is not freely available in nature, so it must be "produced" (that is, transforming other forms of energy to electricity). Production is carried out in power stations (also called "power plants"). Electricity is most often generated at a power plant by electromechanical generators, primarily driven by heat engines fueled by combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind. Other energy sources include solar photovoltaics and geothermal power. There are also exotic and speculative methods to recover energy, such as proposed fusion reactor designs which aim to directly extract energy from intense magnetic fields generate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single-acting Cylinder
In mechanical engineering, the cylinders of reciprocating engines are often classified by whether they are single- or double-acting, depending on how the working fluid acts on the piston. Single-acting A single-acting cylinder in a reciprocating engine is a cylinder in which the working fluid acts on one side of the piston only. A single-acting cylinder relies on the load, springs, other cylinders, or the momentum of a flywheel, to push the piston back in the other direction. Single-acting cylinders are found in most kinds of reciprocating engine. They are almost universal in internal combustion engines (e.g. petrol and diesel engines) and are also used in many external combustion engines such as Stirling engines and some steam engines. They are also found in pumps and hydraulic rams. Double-acting A double-acting cylinder is a cylinder in which the working fluid acts alternately on both sides of the piston. In order to connect the piston in a double-acting cylinder to an e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triple-expansion 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willans Engine
The Willans engine or central valve engine was a high-speed stationary steam engine used mainly for electricity generation around the start of the 20th century. Willans' engine was one of the best-known examples of the steeple compound engine. These were double- or triple-expansion compound engines, with the unusual features of single-acting cylinders and a central spindle valve shared between all the cylinders of that spindle. The cylinders are arranged as tandem compounds, with high- and low-pressure cylinders mounted on the same vertical shaft. This vertical arrangement of the steeple compound gives a compact floor layout for an engine of such power. Willans engines were not the first high-speed engines for electricity generation, but they were soon adopted to become the predominant type in service. Applications Electricity generation The engines were developed by Peter W. Willans and Mark Robinson at Thames Ditton, primarily for the increasing market in electrical gener ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willans And Robinson Engine (Rankin Kennedy, Electrical Installations, Vol III, 1903)
Willans may mean: People * Herbert Geoffrey Willans, (4 February 1911 – 6 August 1958), an English author and journalist, is best known as the co-creator, with the illustrator Ronald Searle, of Nigel Molesworth * Owen Willans Richardson, (26 April 1879 – 15 February 1959), was a British physicist who won the Nobel Prize in Physics in 1928 * Joel Willans (b. 1972), British copywriter and author * John Bancroft Willans (1881–1957) landowner and philanthropist * John William Willans (c.1845-1895) Chief Engineer of the Liverpool Overhead Railway, and father of John Bancroft Willans Firms * Willans (company), British-based safety harness provider * Willans & Robinson, were manufacturing engineers of Thames Ditton, Surrey. Later, from 1896, at Victoria Works, Rugby, Warwickshire, England Other * Willans engine The Willans engine or central valve engine was a high-speed stationary steam engine used mainly for electricity generation around the start of the 20th century. Willans' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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