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. 1921 Excerpt: ...working limit is a pressure of 3 in. of water in the ashpit. The steam passing through the grate with the draft from a steam jet prevents the clinker from adhering to the grate, which makes clinkering easier. This advantage, however, is not important with modern appliances for mechanical clinkering. The steam draft has ...
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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. 1921 Excerpt: ...working limit is a pressure of 3 in. of water in the ashpit. The steam passing through the grate with the draft from a steam jet prevents the clinker from adhering to the grate, which makes clinkering easier. This advantage, however, is not important with modern appliances for mechanical clinkering. The steam draft has a tendency to make the clinker more porous and friable, and thus less suitable for concrete and other useful purposes. Maxwell states that with steam jets "a steadier steam pressure is maintained and more steam per ton of refuse is available at the engines." On the other hand, Mr. J. A. Robertson, Chief Engineer of the Electricity Works and Refuse Destructors at Greenock, Scotland, favors the use of the fan draft. The effect of the steam in the draft has been well stated by Lord Kelvin and Professor Barr, after experiments at the Oldham destructor works, in the following extract from their report: " The Removal and Disposal of Town Refuse," by W. II. Maxwell, London, 1898. "The steam is condensed by contact with the cold air which it injects, and the water thus produced is re-evaporated in contact with the furnace bars, keeping down their temperature. In this way the life of the furnace bars is greatly prolonged. A more important function is, however, fulfilled by the steam. In coming into contact with the incandescent fuel it is decomposed, the hydrogen being freed, while the oxygen combines with the carbon in the fuel to form carbon monoxide. "This decomposition of the water is effected by heat abstracted from the lower part of the fire, where it can be of comparatively small value for the cremation of the distillate. "The water gas (hydrogen and carbon monoxide) passes upwards to be burned by the excess a...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
