Power Volume 55, No. 24. Books Group
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Author: Books Group
Number of Pages: 64 pages
Published Date: 01 May 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
Format: eBook
ISBN: 9781231014936
File size: 47 Mb
File Name: Power.Volume.55,.No..24.pdf
Download Link: Power Volume 55, No. 24
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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. 1922 Excerpt: ...not so fortunately situated. It is, therefore, as a rule, necessary to provide means for getting rid of the ice when it reaches the power works. One of the hardest problems to solve today is that of preventing floating sheet ice, and very often floating sheet ice and a combination of frazil and anchor ice, from entering the power canal, and clogging the canal either entirely or sufficiently to reduce seriously the head on the plant This problem has been solved in many cases by means of ice-deflecting booms. As an illustration may be taken the ice boom recently installed by the Niagara Falls Power Co. In the case of this company, a floating boom has been installed parallel to the flow of the river. The boom, which is chained to concrete piers, prevents floating ice entering the power canals. The velocity of the water underneath the booms is kept very low. For this purpose a channel has been dredged out between the main power canals and the booms. Any sheet ice beinjr sucked under the boom and into the power canal is removed in the gatehouse by means of mechanically operated rakes and an ice skimmer (electrically operated conveyor.) In the case of Cedars the canal must be kept open all winter by means of ice breakers on account of the heavy flow of sheet ice, frazil and anchor ice. It has so far been impossible to keep the ice out of the canal, although the chief engineer' of the company expects before long to provide means whereby most of the ice may be deflected into the main river channel. The present method of handling is to prevent the surface ice from forming in the canal, and to allow any ice entering the canal to be passed through large sluices provided for this purpose. Since there is no shortage of water in the St. Lawrence River, this method has be...
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