On the Conversion of Heat into Work - Softcover

Anderson, William

Softcover

ISBN 10: 3337438334 ISBN 13: 9783337438333

Synopsis

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. 1901 edition. ...should have 2,400 indicated foot-pounds, and if this be done in a minute, then the units of heat absorbed by the engine would lbs, x 14,143 u X 2,400 foot-pounds _ 60 min. X 33,000 foot-pounds U If the boiler had depended on chimney-draught, the iemperature of the smoke must have been at least 400, and the loss of heat=19 lbs. X'238x350= 1,582", or eighteen times as much as the blower would consume. But suppose that, by the use of forced blast, we were able to arrange a feed-heater, so as to reduce the temperature of the chimney to 100, or only 50 above that of the cold water fed in, then the heat saved per pound of coal would be 19 lbs. X-238x300=1,356 units, more than fifteen times the heat absorbed by the blower, and competent to raise the 10 lbs. of water fed in per 1 lb. of coal 135 "6, or to V&&§, a temperature still far short of that of the boiler. Two things are apparent from this consideration--namely, first that a decided economy will arise from blowing air into boilers by engine-power, instead of drawing it in by means of a chimney; and secondly, that the feed waterheater should be detached from the boiler, and made to do its work at the lowest temperature practicable. In furnaces used in the various arts, such as in metallurgy, in glass, and chemical manufactures, it is, generally, impossible directly to reduce the temperature of the smoke to economical limits. In blast furnaces, the intense heat at the boshes is, in a great measure, taken up by the mass of fresh materials continually being added at the top, but in most cases, especially where steam is not required, the regenerative system has to be adopted. The regenerator appears to have been invented in the early part of this century, by Stirling, for...

Edition details

• Language: English
• ISBN 10: 3337438334
• ISBN 13: 9783337438333
• Binding: Paperback