Hartmann, Francis M., 1870- · New York, McGraw-Hill · leaf 307
lue of v, in the equation for efficiency, we findfor the maximum efficiency l+cos0 which is identical with equation (16). Equation (16) shows that if the angle 6 equals zero, so that themotion of the water is completely reversed, the efficiency equalsunity. But, this also means, and necessarily so,… … Fig. 60. impossible to have the angle 0 equal to zero, on account of inter-ference with the following cup. Assume the angle 0 to varybetween the extreme limits of 0° and 90°. Then, as just stated,for the angle 0 = 0, the efficiency is unity; and for the angle 0 = 90°,the efficiency becomes 1/2.…
Heat · Thermodynamics
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