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. 1877 Excerpt: ...the pound of anthracite to be capable of evaporating 8 lbs. of water at a boiler pressure of 60 lbs. This pressure corresponds to a temperature of 307 Fahr., and at this pressure and temperature the steam occupies about 348 times the volume of the water from which it was formed, so that the 8 lbs. of water will occupy ...
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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. 1877 Excerpt: ...the pound of anthracite to be capable of evaporating 8 lbs. of water at a boiler pressure of 60 lbs. This pressure corresponds to a temperature of 307 Fahr., and at this pressure and temperature the steam occupies about 348 times the volume of the water from which it was formed, so that the 8 lbs. of water will occupy approximately 8 x 348 x 27-7 cubic inches = 77,000 cubic inches (1 lb. of water occupies 27-7 cubic inches). We will now suppose these 77,000 cubic inches to be expanded in a cylinder, giving what is called an expansion of 6 times, taking Tth clearance into consideration, and supposing there to be no loss from condensation, leakage, wire drawing, or cushioning, and that the expansion takes place according to Boyle and Mariotte's law. Such steam in expanding would give the indicator card in Fig. 50, and a mean pressure of 38 lbs. If the reader takes the trouble to Fig. 50. make the calculation he will find that a cylinder 63 inches diameter, with an 8-foot stroke, and-th of the stroke clearance, would require 77,000 cubic inches steam to fill it with boiler pressure steam, and give an expansion of 6 times. The foot-pounds done by this steam in expanding are found by multiplying the area of the cylinder in inches, by the stroke, and by the mean pressure in lbs., viz. 38. This gives 940,000 footpounds; but, according to Joule's experiments, 772 foot-pounds represent 1 unit of heat Fahr. We have therefore transformed into work fp, or 1220 units of heat. Let us compare this quantity with the total heat in the steam. The steam contained 8600 units, and out of these we have utilized 1220 units, or jth approximately. This th is th of the heat in the steam, not th of the heat in the coal. The heat in the steam was of the heat in the coal, so we have de...
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Add this copy of An Elementary Treatise on Steam, and the Use of the to cart. $25.18, fair condition, Sold by Anybook rated 4.0 out of 5 stars, ships from Lincoln, UNITED KINGDOM, published 1877 by E. & F. N. Spon.
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Seller's Description:
Cover and spine in fair condition, with some wearing mainly on the spine and cover edges. Clean cut pages. Some darkening on the page edges. Text not affected by darkening, very readable. Binding is in fair. condition. This book has hardback covers. Ex-library, With usual stamps and markings, With owner's inscription inside cover. In fair condition, suitable as a study copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 550grams, ISBN:
Add this copy of Elementary Treatise on Steam and the Use of the to cart. $63.29, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Santa Clarita, CA, UNITED STATES, published 2016 by Palala Press.
