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The turbine is the universal means used to generate large quantities of electric power with steam.Summer afternoon.summer afternoon to me those have always been the most beautiful words in the English Language henry james Steam turbines are more compact and usually permit higher temperatures and greater expansion ratios than reciprocating steam engines.

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In the steam turbine, steam is discharged at high velocity through nozzles and then flows through a series of stationary and moving blades, causing a rotor to move at high speeds. In a simple steam engine, expansion of the steam takes place in only one cylinder, whereas in the compound engine there are two or more cylinders of increasing size for greater expansion of the steam and higher efficiency the first and smallest piston is operated by the initial high-pressure steam and the second by the lower-pressure steam exhausted from the first. In the double-acting engine, steam from the boiler is admitted alternately to each side of the piston.

As the steam expands, it pushes the piston, which is usually connected to a crank on a flywheel to produce rotary motion. In a reciprocating engine, the piston and cylinder type of steam engine, steam under pressure is admitted into the cylinder by a valve mechanism. By means of superheaters, the steam may be heated beyond the temperature at which it is produced by boiling water. A common superheater is a group of parallel pipes with their surfaces exposed to the hot gases in the boiler furnace. The steam may be further heated by passing it through a superheater on its way from the boiler to the engine. The most efficient performance-that is, the greatest output of work in relation to the heat supplied-is secured by using a low condenser temperature and a high boiler pressure. For high efficiency, the steam must fall through a wide temperature range as a consequence of its expansion within the engine. The remainder of the heat may be allowed to escape, or, for maximum engine efficiency, the steam may be condensed in a separate apparatus, a condenser, at comparatively low temperature and pressure. In a steam engine, hot steam, usually supplied by a boiler, expands under pressure, and part of the heat energy is converted into work. Which English engineer and inventor built and patented the first steam engine? Who developed the first process for manufacturing steel inexpensively? Test your knowledge. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.

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