LYCOS RETRIEVER 
Steam Turbine
built 660 days ago
Definition of Steam Turbine A steam turbine is a form of heat engine in which two distinct changes of energy take place. The available heat energy of the steam first is converted into kinetic energy by the expantion of the steam in suitably shaped passage, or nozzle, form which it issues as a
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GE’s Industrial Steam Turbine Application Center (ISTAC) was established specifically to serve industrial steam turbine customers. With engineers from every technical turbomachinery discipline, GE is best qualified to serve all of your turbine needs. This experienced team is further strengthened through access to original OEM drawings, design and history data and analytical tools to provide you with the highest quality solutions.
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Applications of Industrial Steam Turbines cover all straight condensing, non-condensing, and automatic extraction steam turbines. Specific design features are incorporated to address control issues often unique to process plants including paper mills, oil refineries, chemical plants, and other industrial applications, generator and mechanical drive.
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In large turbines, a valve controls steam flow to groups of nozzles. The number of open valves controls the number of nozzles in use according to the load. A bar-lift or cam arrangement operated by the governor, opens and close the valves in sequence. Such a device is a multiport valve. Using nozzles at full steam pressure is more efficient than throttling the steam.
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Each steam turbine is individually designed to match the customers’ specification using a modular form of construction. This enables standard, service-proven components to be assembled in various configurations to meet particular needs.
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In 1954, the Norfolk & Western received a Baldwin-Lima-Hamilton and Babcock & Wilcox-built a steam-turbine-electric named "Jawn Henry" that looked similar to the C&O attempt. It was shorter, weighed less, and had a Babcock & Wilcox "marine type" water tube boiler (some sources say flash boiler) that operated at 600 psi. and delivered steam at 900 degrees F. It had General Electric traction motors, and rode on four, three axle trucks. All axles were powered so the "Jawn Henry" was a C-C-C-C locomotive.
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Steam Turbine