. Practical physics. odof installing a turbine at Niagara. C isthe outer case into which the water entersfrom the penstock ji. Fig. 1G7, (1), showsthe outer case with contained turbine;Fig. 167, (2), is the inner case, in whichare the fixed guides G, which direct the water at the most advantageous angle against the blades of the wheelinside; Fig. 167, (3), is the wheel itself; and Fig. 167, (4), is a sectionof wheel and inner case, showing how the water enters through theguides and impinges upon the blades W. The spent water simplyfalls down from the blades into the tailrace T (Fig. 166). The
. Practical physics. odof installing a turbine at Niagara. C isthe outer case into which the water entersfrom the penstock ji. Fig. 1G7, (1), showsthe outer case with contained turbine;Fig. 167, (2), is the inner case, in whichare the fixed guides G, which direct the water at the most advantageous angle against the blades of the wheelinside; Fig. 167, (3), is the wheel itself; and Fig. 167, (4), is a sectionof wheel and inner case, showing how the water enters through theguides and impinges upon the blades W. The spent water simplyfalls down from the blades into the tailrace T (Fig. 166). The amountof water which passes through the turbine can be controlled by meansof the rod P (Fig. 167, (1)), which can be turned so as to increase ordecrease the size of the openings between the guides G (Fig. 167, (2)).The energy expended upon the turbine per second is the product ofthe mass of water which passes through it Vjy the height of the turbinepit. Efficiencies as high as 00% have been attained with such The Peltmi waterwheel 150 WORK A^B HEAT ENERGY One of the largest turbines in existence is operated by the Puget SoundPower Co. It develops 25,000 horse power under a 440-foot head of water.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectphysics, bookyear1922
