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  2. Glossary of firefighting equipment - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_firefighting...

    A small pneumatic vacuum generator that removes air from the inside of a fire hose, making it smaller and firm, and therefore easier to pack and less space-consuming. HPF See High pressure fog. Hurst tool See Hydraulic spreader. Hux tool Largely obsolete hydrant wrench made of stamped metal with holes sized for the hydrant valve. Hydrant

  3. Automotive thermoelectric generator - Wikipedia

    en.wikipedia.org/wiki/Automotive_thermoelectric...

    An automotive thermoelectric generator (ATEG) is a device that converts some of the waste heat of an internal combustion engine (IC) into electricity using the Seebeck Effect. A typical ATEG consists of four main elements: A hot-side heat exchanger , a cold-side heat exchanger, thermoelectric materials , and a compression assembly system.

  4. Engine–generator - Wikipedia

    en.wikipedia.org/wiki/Engine–generator

    In addition to the engine and generator, engine–generators generally include a fuel supply, a constant engine speed regulator (governor) in diesel and a generator voltage regulator, cooling and exhaust systems, and lubrication system. Units larger than about 1 kW rating often have a battery and electric starter motor; very large units may ...

  5. Fire-tube boiler - Wikipedia

    en.wikipedia.org/wiki/Fire-tube_boiler

    Forced draught is provided in the locomotive boiler by injecting exhausted steam back into the exhaust via a blast pipe in the smokebox. Locomotive-type boilers are also used in traction engines, steam rollers, portable engines and some other steam road vehicles. The inherent strength of the boiler means it is used as the basis for the vehicle ...

  6. Expanding nozzle - Wikipedia

    en.wikipedia.org/wiki/Expanding_nozzle

    The basic idea is to lower the pressure of the exhaust by expanding it in the nozzle, until it reaches ambient air pressure at the exit. For operations at sea level the skirt is generally short and highly angled, at least in comparison to a skirt designed for operations in space, which are longer and more gradually shaped.

  7. Diesel generator - Wikipedia

    en.wikipedia.org/wiki/Diesel_generator

    A 200 kW Caterpillar diesel generator set in a sound attenuated enclosure used as an emergency backup at a sewage treatment substation in Atlanta, United States. A diesel generator (DG) (also known as a diesel GenSet) is the combination of a diesel engine with an electric generator (often an alternator) to generate electrical energy. [1]