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  2. Steam generator (railroad) - Wikipedia

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

    Chesapeake and Ohio Railway #914130, a troop sleeper that has been converted to a steam generator car. A steam generator is a type of boiler used to produce steam for climate control and potable water heating in railroad passenger cars.

  3. Hydronics - Wikipedia

    en.wikipedia.org/wiki/Hydronics

    The two-pipe reverse return configuration which is sometimes called 'the three-pipe system' is different from the two-pipe system in the way that water returns to the boiler. In a two-pipe system, once the water has left the first radiator, it returns to the boiler to be reheated, and so with the second and third etc.

  4. Trace heating - Wikipedia

    en.wikipedia.org/wiki/Trace_heating

    Electric trace heating began in the 1930s but initially no dedicated equipment was available. Mineral insulated cables ran at high current densities to produce heat, and control equipment was adapted from other applications. [3]

  5. Fixture unit - Wikipedia

    en.wikipedia.org/wiki/Fixture_unit

    A Fixture Unit is not a flow rate unit but a design factor. A fixture unit is equal to 1 cubic foot (0.028 m 3) of water drained in a 1 + 1 ⁄ 4 inches (32 mm) diameter pipe over one minute. [2] One cubic foot of water is roughly 7.48 US gallons (28.3 L; 6.23 imp gal). A Fixture Unit is used in plumbing design for both water supply and waste ...

  6. Superheater - Wikipedia

    en.wikipedia.org/wiki/Superheater

    In a steam engine, the superheater further heats the steam generated by the boiler, increasing its thermal energy and decreasing the likelihood that it will condense inside the engine. [ 1 ] [ 2 ] Superheaters increase the thermal efficiency of the steam engine, and have been widely adopted.

  7. Expansion chamber - Wikipedia

    en.wikipedia.org/wiki/Expansion_chamber

    When the descending piston first exposes the exhaust port on the cylinder wall, the exhaust flows out powerfully due to its pressure (without assistance from the expansion chamber) so the diameter/area over the length of the first portion of the pipe is constant or near constant with a divergence of 0 to 2 degrees which preserves wave energy.

  8. Circulator pump - Wikipedia

    en.wikipedia.org/wiki/Circulator_pump

    The tradeoff is the energy wasted in operating the pump and the additional demand on the water heater to make up for the heat lost from the constantly hot pipes. CAD modelled exploded view of a circulator pump with electric engine

  9. Air preheater - Wikipedia

    en.wikipedia.org/wiki/Air_preheater

    The rotor itself is the medium of heat transfer in this system, and is usually composed of some form of steel and/or ceramic structure. It rotates quite slowly (around 1-2 RPM ) to allow optimum heat transfer first from the hot exhaust gases to the element, then as it rotates, from the element to the cooler air in the other sectors.

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