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Francis inlet scroll at the Grand Coulee Dam Side-view cutaway of a vertical Francis turbine. Here water enters horizontally in a spiral-shaped pipe (spiral case) wrapped around the outside of the turbine's rotating runner and exits vertically down through the center of the turbine. The Francis turbine is a type of water turbine.
Gas turbines accept most commercial fuels, such as petrol, natural gas, propane, diesel fuel, and kerosene as well as renewable fuels such as E85, biodiesel and biogas. Starting on kerosene or diesel can require a more volatile product such as propane gas. Microturbines can use micro-combustion. Full-size gas turbines often use ball bearings.
The best known among turbines manufactured by the company was the Hercules turbine; a design developed by engineer John B. McCormick, who improved upon the Francis turbine, it was the first true mixed flow turbine of a high efficiency.
John Buchanan McCormick (November 4, 1834 – August 21, 1924) [2] was an American mechanical engineer who invented the first modern mixed flow water turbine, the "Hercules", as well variants including the Holyoke-McCormick, and Achilles turbines. [3]
A forward pushing action transfers power from the wheels to the brush mechanism via a gearing system, causing it to rotate, and the debris is picked up and transferred to a bag or hopper mounted on the machine. Powered lawn sweepers resemble push lawn sweepers, but the brush mechanism is powered by a gasoline or electric motor.
The company sells microturbine generators for electrical power generation, cogeneration, biogas-fueled renewable energy, and hybrid vehicle power. Capstone offers microturbines with output power ratings ranging from 30 to 1,000 kW (40 to 1,341 hp). Multiple turbines can be combined with Capstone's Advanced Power Server (APS) for greater output.
Turbines are sometimes differentiated on the basis of the type of inlet flow, whether the inlet velocity is in axial direction, radial direction or a combination of both. . The Francis turbine is a mixed hydraulic turbine (the inlet velocity has Radial and tangential components) while the Kaplan turbine is an axial hydraulic turbine (the inlet velocity has only axial velocity componen
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