Fuel Tests with Illinois Coal: Compiled from Etest Made by the Technologic Branch of the United States Geological Survey at the St. Louis Mo. Fuel Testing Plant, 1904-June 30, 1907

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The University, 1908 - 54 Seiten
 

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Seite 54 - BULLETIN 323. Experimental work conducted in the chemical laboratory of the United States fuel-testing plant at St. Louis, Mo., January 1, 1905, to July 31, 1906, by NW Lord.
Seite 54 - BULLETIN 339. The purchase of coal under government and commercial specifications on the basis of its heating value, with analyses of coal delivered under government contracts, by DT Randall. 1908. 27 pp. 5 cents. BULLETIN 343.
Seite 30 - ... into a locomotive fire box is not consumed, a considerable proportion of it finding a way of escape before complete combustion has taken place. The efficiency of the boiler is the ratio of the heat absorbed by the water to the heat available in the coal as fired. The efficiency of the boiler and grate is the ratio of the heat absorbed by the water in the boiler to the heat of combustion in the fuel fired. It appears from column 60 that the efficiency of the boiler ranged from 68 to 75 per cent;...
Seite 37 - ... fuel bed just above. The clinker then melts down into the spaces between the bars and the sulphur seems to combine with the iron of the grate. The heat warps the grate bars, and the clinker has such corrosive action on the hot iron that a set of grate bars is destroyed in the course of a few days. When such clinkering occurs, any attempt to slice the fire fails, and only slow and very difficult cleaning of the fires will remove the clinkers. Ordinarily, with coals forming loose clinkers, the...
Seite 54 - BULLETIN 332. Report of the United States fuel-testing plant at St. Louis, Mo., January 1, 1906, to June 30, 1907; JA Holmes, in charge. 1908.
Seite 4 - Macou-pin, Christian, Logan and Macon Counties. — The Springfield district, extending into several adjoining counties, has long been one of the most important. Sangamon county produced more than 5,000,000 tons in 1907. The coal of the district is commonly known as No. 5, though recent work by Mr. Savage and the writer tends to confirm the suggestion made by Messrs.
Seite 4 - ... approximate uniformity in physical character and thickness, but varies from place to place in fuel-value. At Duquoin on the west it is nearly horizontal, but on the east it dips rapidly and becomes thicker and somewhat better in quality. At Spillertown, another seam, four feet thick, is mined sixty feet below No.
Seite 5 - ... covers many square miles with a thickness of from 6 to 9 feet. A band of shale or sulphur frequently occurs about two feet above the floor. Several borings have shown a seam from 185 to 220 feet below the Grape Creek, and from 4 to 8 feet thick, but badly broken by bands of shale and limestone. Saline Co-unty. — Saline county is one of the newest and most rapidly growing producers. In 1907 its output was about 2,125,000 tons, a gain of 125 per cent upon 1906. There are two seams, Nos. 7 and...
Seite 30 - Water evaporated from and at 212° F. per square foot of heating surface per hour. Per sq. ft. of grate surface Per sq. ft. of heating surface *40. *41. *42. Water evaporated per hour from temperature of 100° F.
Seite 23 - ... 2 feet from the back wall, on a line with the point of selection of the pieces taken from the door and the center. The separate pieces of coke extended the whole height of the charge and were as nearly uniform in size as possible.

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