Sullivan's new hydraulics; consisting of new hydraulic formulas and the rational law of variation of coefficients. Flow and resistance to flow in all ... fire hose, hydraulic giants, power mains, no

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. 1900 Excerpt: ...of head, And we have, 00032 h"=' 692 X3000X4.3264 =6.D0 feet head lost. It will be understood that the area at discharge is such that it will admit of no greater discharge under the given net head than the quantity q. The manner of discharge may be through other small pipes tapped into the main if it is a water works system, or the discharge may be through a reducer or nozzle if the pipe is used as a power main for driving water wheels, or the discharge maybe full and the total head lost except the velocity head, as may be desired. 65.--To Find the Area and Diameter of the Nozzle Tip or Aperture Required to Discharge a Given Quantity. If there is a simple tip on the end of the pipe made in the form of the contracted vein which reduces the diameter at discharge, there will be a very small loss of head by friction in efflux from the tip. The area in square feet of the required aperture in such tip will be found as follows: Assume the diameter of the pipe to be.7824 feet, and net head at discharge to be 94 feet, as in the preceding section, and the quantity to be disharged as one cubic foot per second. The velocity that will be generated by this net head at discharge will be v = y"2 g H=8.025/9in=77.8052 feet per second. Now, q= areaXvelocity =ay/2g H. Whence a = q 1.0-7---gyg2"=.0128526 square feet. The diameter in feet is then.7854 eter. See table No. 27, § 58. If the discharge is to be through a nozzle or reducer of several feet length, there will be considerable loss of head by friction in such nozzle or reducer, for which allowance must be made. This loss will depend upon the length of the convergent reducer or nozzle and its mean or average diameter as well as its smoothness of internal circumference, and the square of the velocity th...