Rudimentary Treatise on the Power of Water; As Applied to Drive Flour Mills, and to Give Motion to Turbines and Other Hydrostatic Engines. with an Apx. on Centrifugal and Rotary Pumps

Rudimentary Treatise on the Power of Water; As Applied to Drive Flour Mills, and to Give Motion to Turbines and Other Hydrostatic Engines. with an Apx. on Centrifugal and Rotary Pumps

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1853 edition. Excerpt: ...the bottom of the wheel. Mr..Fairbairn from his experience states that, in the construction of wheels for high falls, the best proportion of the opening of the bucket is proved to be nearly as 5 to 24; that is, the contents of the bucket being 24 cubic feet, the area of the opening, or entrance for the water, would be 5 square feet. In breast-wheels, which receive the water at a height of ten to twelve degrees above the horizontal centre, the ratio should be nearly as 8 to 24, or as 1 to 3. "With these proportions, the depth of the shrouding is assumed to be about three times the width of the opening, or three times the distance from the lip to the back of the bucket, the opening being 5 inches, and the depth of the shroud 15 inches. These proportions are shown in Figure 30. For lower fails, or those wheels which receive the water below the horizontal centre, a larger opening becomes necessary for the reception of a larger body of water, and its final discharge. In the construction of water-wheels it is requisite, in order to obtain the maximum effect, to have the opening of the bucket sufficiently large to allow an easy entrance and an equally free escape for the water, as its retention in the bucket must evidently be injurious when carried beyond the vertical centre, or perpendicular line below the wheel's axis. A new mode of applying the water to wheels worked by low falls has been introduced by M. Poncelet, whose works on hydraulics and especially on water-wheels are well known; his mode is fully elucidated in his " Memoire sur les Roues Hydrauliques a Aubes-Courbes, mues par-dessous." (Report on Water-wheels with Curved Buckets, worked below.) This distinguished engineer visited England during the Great Exhibition, and was...show more

Product details

  • Paperback | 58 pages
  • 189 x 246 x 3mm | 122g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236486579
  • 9781236486578