His patent was licensed and the turbine scaled-up shortly after by an American, George Westinghouse. The invention of Parsons' steam turbine made cheap and plentiful electricity possible and revolutionized marine transport and naval warfare. The modern steam turbine was invented in 1884 by Charles Parsons, whose first model was connected to a dynamo that generated 7.5 kilowatts (10.1 hp) of electricity. In 1827 the Frenchmen Real and Pichon patented and constructed a compound impulse turbine. In 1807 Polikarp Zalesov designed and constructed an impulse turbine, using it for the fire pump operation. In 1775 at Soho James Watt designed a reaction turbine that was put to work there. A more modern version of this car was produced some time in the late 18th century by an unknown German mechanic. In 1672 an impulse turbine driven car was designed by Ferdinand Verbiest. The devices described by Taqi al-Din and Wilkins are today known as steam jacks. Steam turbines were also described by the Italian Giovanni Branca (1629) and John Wilkins in England (1648). In 1551, Taqi al-Din in Ottoman Egypt described a steam turbine with the practical application of rotating a spit. The first device that may be classified as a reaction steam turbine was little more than a toy, the classic Aeolipile, described in the 1st century by Hero of Alexandria in Roman Egypt. In large installations, even the sturdiest turbine is capable of shaking itself apart when operated out of trim.Ī 250 kW industrial steam turbine from 1910 (right) directly linked to a generator (left) Technical concerns include rotor imbalance, vibration, bearing wear, and uneven expansion (various forms of thermal shock). In a typical nuclear installation, another 4000 tons of supporting steel structure is required, as well as 1000 tons of pumps, valves, and pipes. An Arabelle turbine is 7 m in diameter, weighs 4000 tons and spins at 1500 rpm. A steam turbine connected to an electric generator is called a turbo generator.Īs of 2021, among the largest steam turbines in the world is the Arabelle steam turbines manufactured by GE based on an original design by Alstom.
Because the turbine generates rotary motion, it is particularly suited to be used to drive an electrical generator-about 85% of all electricity generation in the United States in the year 2014 was by use of steam turbines. The steam turbine is a form of heat engine that derives much of its improvement in thermodynamic efficiency from the use of multiple stages in the expansion of the steam, which results in a closer approach to the ideal reversible expansion process. Fabrication of a modern steam turbine involves advanced metalwork to form high-grade steel alloys into precision parts using technologies that first became available in the 20th century continued advances in durability and efficiency of steam turbines remains central to the energy economics of the 21st century. Its modern manifestation was invented by Charles Parsons in 1884. The rotor of a modern steam turbine used in a power plantĪ steam turbine is a machine that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft.
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