Hartmann, Francis M., 1870- · New York, McGraw-Hill · leaf 304
ind for the efficiency, Pi 2Vev17i2 Taking the ratio (8) Equation (8) again shows, that if Vi and v\ are fixed, the efficiencyis a maximum when Ve is a maximum; i.e., the velocity com-ponent normal to the direction of motion is as small as possible. 196. The Pelton Cup. Pelton wheels may be taken… … Fig. 59. jet, and vi the velocity of the cup, whose section is represented byabc. The velocity of the water relative to the cup is given by 7r = 7i-i;i. (9) Since the direction of motion of the water at exit makes an angle6 with the direction of motion of the cup, the component of thevelocity of…
Heat · Thermodynamics
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