Steam Using or Steam Engine Practice - Softcover

Smith, Charles

Softcover

ISBN 10: 3845712147 ISBN 13: 9783845712147

Synopsis

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1885 edition. ...from 0.6 m. to 0.8 m., the water brought from the condenser. The discharge of this orifice is found experimentally by closing it tightly by a stopper, filling to a known height and noting the time it takes to lower each 0.1 m. Let S be the horizontal section of the pit, a the area of discharge, and n an unknown coefficient of contraction, h the head above the centre of the orifice, and t the time. We then = nadt V2gh 2 & WH0--VH1 = nsTVig nsV'ig = %P W'H0-V/A) This gives at once ns V2g when the time T is noted, while the level falls from H0 to if,. The volume of water, or the weight rather, running out under head H, is 77= (ns v"20) VH. During the days of experiments we noted every fifteen minutes the heads h„ h„ h,... these varied little and VIlm = Vh + V-t ±; or, more simply even 'N whence II = (ns VW1 Vhm ± S ft, and fc, are initial and final heads of an experiment whose duration was T. If in this time the engine made B strokes the weight of water rejected IT 7 per stroke was //„ =. The injection per stroke was II--M. B We give in tabular form the values obtained in eight experiments, each consuming an entire Tabl' I. 2. Temperatures.--Part of these are noted directly, but with different instruments. To arrive at the superheating a good thermometer is simply placed in mercury in a copper pocket open at one end and closed at the other and let into the steam pipe; this measurement is easy to obtain. The rise of temporature of the injection water in the condenser necessitates a more careful measurement--a special thermometer known already to the readers of our Bulletins, the differential air thermometer. The practical arrangements that M. Hir n brought about this instrument permitted...

Edition details

• Language: English
• ISBN 10: 3845712147
• ISBN 13: 9783845712147
• Binding: Paperback