Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 343
Fig. 152.—Section of Overshot Water-wheel. 3I2 EXPERIMENTAL ENGINEERING. [§ 24I. Let d equal the depth of the buckets, b the width of thewheel, r the radius of the wheel, n the number of revolutionsper second, v the peripheral velocity in feet per second, Q thewater-supply in cubic feet per second,… … Fig. 153.—Section of Breast-wheel. Then, supposing the wheel to be set just free of the backwater, h = 2r -\- (i-J- to 2) all in feet; 27ZT N = —j- = , usually, or ; bvQ1 = —{2rd— d*) = bdv, nearly; Q — mQ, —rnbdv ;v = 2nnr. § 243-] HYDRA ULIC MA CHINER Y. 3 I 3 The efficiency is the ratio of the…
Building materials · Machinery
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