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The engine is a V-twin four-stroke, 895 cc (54.6 cu in) or 993 cc (60.6 cu in) displacement, fan-driven air-cooled, gasoline engine design. The larger displacement is achieved by increasing the stroke from 78 to 87 mm (3.1 to 3.4 in), but using the same bore of 86 mm (3.4 in).
Briggs & Stratton kept the motor that had been the heart of the motor wheel and adapted it to power other applications such as reel lawn mowers and small equipment such as washing machines. The company went public on the New York Stock Exchange in 1928. During World War II, Briggs & Stratton produced generators for the war effort.
The Rotax 912 was first sold in 1989 in non-certificated form for use in ultralights and motorgliders. [3]The original 60 kW (80 hp) 912 UL engine has a capacity of 1,211 cc (73.9 cu in) and a compression ratio of 9.1:1, and is designed to work with regular automotive gasoline, with up to 10% ethanol.
The D-curve for a particular generator can be expanded by improved cooling. Hydrogen-cooled turbo generator's cooling can be improved by increasing the hydrogen pressure, larger generators, from 300 MVA, use more efficient water cooling. [3] Capability curve of a synchronous generator with minimum load. The practical D-curve of a typical ...
In motor vehicle applications a supplementary radiator is sometimes used for improved heat removal, though the use of an electric water pump to circulate a coolant adds parasitic loss to total generator output power. Water cooling the thermoelectric generator's cold side, as when generating thermoelectric power from the hot crankcase of an ...
Isolated-phase bus is made in ratings from 3000 amperes to 45,000 amperes, and rated for voltages from 5000 volts up to about 35,000 volts. In the larger current ratings, dry air is forced through the enclosures and within the tubular conductors for forced-air cooling of the conductors. The cooling air is recirculated through a heat exchanger.
While small generators may be cooled by air drawn through filters at the inlet, larger units generally require special cooling arrangements. Hydrogen gas cooling, in an oil-sealed casing, is used because it has the highest known heat transfer coefficient of any gas and for its low viscosity which reduces windage losses.
This 300 kW prototype was a 20 m diameter three-bladed horizontal-axis turbine. It sat on a monopile foundation in 50 m deep water. In 2003, the project was reported to have cost US$11m. [15] The HS300 turbine was connected to the grid in 2014, and operated for over 16,000 hours before it was decommissioned in 2011 and removed in 2012. [3] [16]
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