. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. These tubes not only contribute to strengthen the flues butthey add to the heating surface and greatly promote the circu-lation so important in the water space. KOTB. These descriptions and illustrations of the Lancashire boilerare of general value, owing to the fact that very many exhaust-ive tests and experiments upon steam economy have beenmade and permanently recorded in connection with this formof steam generator. 5S Maxims and InstrucHona THE GROWTH OF THE STEAM BOILER.
. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. These tubes not only contribute to strengthen the flues butthey add to the heating surface and greatly promote the circu-lation so important in the water space. KOTB. These descriptions and illustrations of the Lancashire boilerare of general value, owing to the fact that very many exhaust-ive tests and experiments upon steam economy have beenmade and permanently recorded in connection with this formof steam generator. 5S Maxims and InstrucHona THE GROWTH OF THE STEAM BOILER. In the Galloway form of boiler tbe flue is sustained by the introduction of numerous conical tubes,flanged at the two ends and riveted across the flue. Thesetubes, a sketch of which are given in fig. 18 (rt), are in freecommunication with the water of the boiler, and besides actingas stifleners, they also serve to increase the heating surface andto promote eirculation ^. Pig. 19. Fig. 20. The illustration (figs. 18, 19 and 20) give all the of a Lancashire boiler fitted with Galloway tubes. represents a longitudinal section and figs. 19 and 5iOshows on a large scale an end view of the front of the boilerwith its fittings and also a transverse section. The arrangement of the furnaces, flues, and the Galloway tubes is sufficiently obvious from the drawings. The usual length of theseboilers is 27 feet, though they are occasionally made as short as21 feet. The minimum diameter of the furnaces is 33 inches, and inorder to contain these comfortably the diameter of the boilershould not be less than 7 feet. The ends of the boiler are flat,and are prevented from bulging outwards by being held inplace by the furnaces and flues which sray the two ends to-gether and also ^y the so-called gusset stays e, e. In additionto the latter the flat ends of the boiler have longitudinal rod^t,o tie them together; one of these is shown at A, A, &g.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsteamen, bookyear1917
