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. 1870 Excerpt: ...compared, with bituminous coal, is well known by the American engineers. The following table shows the duty of several of these high pressure non-condensing engines, from a recent report of the engineer of the Detroit Water Works, reduced to the English standard of lbs., raised one foot high by the consumption of 1 cwt ...
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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. 1870 Excerpt: ...compared, with bituminous coal, is well known by the American engineers. The following table shows the duty of several of these high pressure non-condensing engines, from a recent report of the engineer of the Detroit Water Works, reduced to the English standard of lbs., raised one foot high by the consumption of 1 cwt. of coal. Duty in lbs. Pittsburgh Upper Water Works Engines, date 1852. 19,941,600 Ditto, Lower works 19,112,576 Alleghany city 19,226,700 Detroit v. 17,397,856 In Cincinnati and other towns, there are both kinds of engines; namely, condensing and non-condensing high pressure engines. This practice of adopting both kinds is worthy of attention. The ordinary and regular work is assigned to a condensing double acting engine, working expansively like our Cornish engines; and the duplicate engine employed for occasional work, and to serve in case of emergency, is a high pressure non-condensing engine, with much smaller cylinder than the other. This gives the advantage of great economy in the regular continuous working of the condensing engine, and as the high pressure engine is much cheaper to erect, it saves a considerable sum in the first outlay. Mr. McAlpine, a celebrated American hydraulic engineer, has adopted this method in most of his recent works, as in Brooklyn, Albany, Chicago, and other places. Thus, at Albany, where two million gallons have to be raised daily to a height of 156 feet, and another million to a height of 238 feet, exclusive of friction, Mr. McAlpine proposes a double-action condensing Cornish engine for the regular pumping work, with a duplicate non-condensing engine as a reserve. The Cornish engine, to have a 58-inch cylinder 12 feet stroke, and to be worked at 10 double strokes a minute--Steam in boiler 30 lbs. per inch..
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Add this copy of Waterworks for the Supply of Cities and Towns: With a to cart. $65.35, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2011 by Nabu Press.
