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  2. Supercritical steam generator - Wikipedia

    en.wikipedia.org/wiki/Supercritical_steam_generator

    A supercritical steam generator is a type of boiler that operates at supercritical pressure and temperature, frequently used in the production of electric power . In contrast to a subcritical boiler in which steam bubbles form, a supercritical steam generator operates above the critical pressure – 22 megapascals (3,200 psi) and temperature ...

  3. Steam generator (boiler) - Wikipedia

    en.wikipedia.org/wiki/Steam_generator_(boiler)

    A steam generator is a form of low water-content boiler, similar to a flash steam boiler. The usual construction is as a spiral coil of water-tube, arranged as a single, or monotube, coil. Circulation is once-through and pumped under pressure, as a forced-circulation boiler. [1] The narrow-tube construction, without any large-diameter drums or ...

  4. Heat recovery steam generator - Wikipedia

    en.wikipedia.org/wiki/Heat_recovery_steam_generator

    Heat recovery steam generator. A heat recovery steam generator ( HRSG) is an energy recovery heat exchanger that recovers heat from a hot gas stream, such as a combustion turbine or other waste gas stream. It produces steam that can be used in a process ( cogeneration) or used to drive a steam turbine ( combined cycle ).

  5. United States twenty-dollar bill - Wikipedia

    en.wikipedia.org/wiki/United_States_twenty...

    Design. White House. Design date. 2003. The United States twenty-dollar bill (US$20) is a denomination of U.S. currency. A portrait of Andrew Jackson, the seventh U.S. president (1829–1837), has been featured on the obverse of the bill since 1928; the White House is featured on the reverse. As of December 2018, the average life of a $20 bill ...

  6. Boiler (power generation) - Wikipedia

    en.wikipedia.org/wiki/Boiler_(power_generation)

    Boiler (power generation) An industrial boiler, originally used for supplying steam to a stationary steam engine. A boiler or steam generator is a device used to create steam by applying heat energy to water. Although the definitions are somewhat flexible, it can be said that older steam generators were commonly termed boilers and worked at low ...

  7. Monotube steam generator - Wikipedia

    en.wikipedia.org/wiki/Monotube_steam_generator

    Monotube steam generator. Herreshoff steam generator in a Peruvian torpedo boat of 1879. A monotube steam generator is a type of steam generator consisting of a single tube, usually in a multi-layer spiral, that forms a once-through steam generator (OTSG). The first of these was the Herreshoff steam generator of 1873.

  8. Steam generator (nuclear power) - Wikipedia

    en.wikipedia.org/wiki/Steam_generator_(nuclear...

    This Babcock & Wilcox nuclear steam generator moved in a special train (restricted to 20 mph) via the Penn Central Railroad and Southern Railway from Barberton, Ohio to a Duke Energy site in Oconee, S.C. This generator weights 1,140,000 lbs and is a record shipment for the Railroad at that time (1970). A once-through steam generator A VVER ...

  9. Free-piston engine - Wikipedia

    en.wikipedia.org/wiki/Free-piston_engine

    Free-piston engine used as a gas generator to drive a turbine. A free-piston engine is a linear, 'crankless' internal combustion engine, in which the piston motion is not controlled by a crankshaft but determined by the interaction of forces from the combustion chamber gases, a rebound device (e.g., a piston in a closed cylinder) and a load device (e.g. a gas compressor or a linear alternator).