. Agricultural engineering; a text book for students of secondary schools of agriculture, colleges offering a general course in the subject and the general reader. Agricultural engineering. FARM MOTORS 383 to heat the water as it is forced into the boiler. The heat thus saved may amount to as much as ten to fifteen per cent. Boiler Management. In managing the boiler care should be taken to see that the flues are kept free of soot, in order that the heated gases may come in direct contact with the metal, and that the boiler is kept clear of incrustation on the inside. Such accumulations do not
. Agricultural engineering; a text book for students of secondary schools of agriculture, colleges offering a general course in the subject and the general reader. Agricultural engineering. FARM MOTORS 383 to heat the water as it is forced into the boiler. The heat thus saved may amount to as much as ten to fifteen per cent. Boiler Management. In managing the boiler care should be taken to see that the flues are kept free of soot, in order that the heated gases may come in direct contact with the metal, and that the boiler is kept clear of incrustation on the inside. Such accumulations do not have the heat-con- ducting properties of the steel and result in a serious loss of heat. If the scaly deposits from the water become too thick, the heat may not be carried away from the plate fast enough to prevent it from becoming overheated. Thus care should be taken not only to use water which is free from foreign sub- stances, but also to clean the boiler 246 A feed water heater in which the water is heated by the exhaust steam. Foaming sometimes occurs in a boiler, due largely to the presence of dirt, alkali, grease, or other foreign matter. It causes a large amount of water to be carried away with the steam, and prevents the engineer from determining accu- rately the true level of the water. Great care should be taken in managing the boiler when foaming takes place. Low water in a boiler should always be guarded against; and if at any time it should occur, the further generation of heat should be stopped and the boiler allowed to cool. It is inadvisable to try to remove the fire, as it is quite sure to increase its intensity. The best procedure is to cover tne. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Davidson, Jay Brownlee, 1880-1957. St. Paul, Minn. , Webb Pub. Co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagricul, bookyear1919
