Hydraulic engineering; a practical treatise on the principles of water pressure and flow and their application to the development of water power, including the calculation, design and construction of water wheels, turbines, and other details of hydraulic power plants (1909)
American School (Chicago, Ill.), Black, Adolph, Turneaure, Frederick Eugene, 1866- · Chicago American School of Correspondence · leaf 136
^/i; (67) the maximum efficiency is: e = (Max.) = h, or .50 per cent; () and the maximum work of the wheel is: Work (Max.) = hWh (69) Here, also, the coefficient of velocity of the water in passing throughthe orifice should properly be considered. In this type, as well as inthe last, for reasons… … 77777777777777777777, wheel is more nearly u = .401/ icfli than .501 2(jh. In practice theefficiencies of such wheels are found to lie between 20 and 40 percent. The lowest efficiencies are obtained from wheels placed inan unconfined current of water, such as a wheel attached to a bargeanchored in…
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