A manual of the mechanics of engineering and of the construction of machines Volume 2, pt. 2, ; with an introduction to the calculus. Designed as a . and for the use of engineers, architects, etc

ISBN 10: 1236434501 / ISBN 13: 9781236434500
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A manual of the mechanics of engineering and of the construction of machines Volume 2, pt. 2, ; with an introduction to the calculus. Designed as a . and for the use of engineers, architects, etc. N° de ref. de la librería

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Sinopsis: 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. 1878 Excerpt: ...CAPACITY, ETC. EXPERIMENTS WITH VERTICAL WATER-TUBE BOILER, ARRANGED WITH REFERENCE TO ECONOMY, CAPACITY, ETC.--Continued). From a careful stndy of experiments similar to those that have been described, the laws governing the performance of boilers can be deduced with considerable accuracy. In tracing these laws, it is best to lay down the several results, and draw curves through them to give fair representations of the average. An investigation of this kind by C. E. Emery may be found in the " Reports and Awards, Group XX., International Exhibition, 1876," and the following paper, by the late Theron Skeel, published in the American Machinist for December, 1877, embodies, in concise form, a number of important rules deduced from such experiments: "The general principles which apply to the setting of steam boilers to obtain the most steam from the smallest quantity of coal are extremely simple, and are as follows: I. The highest chimney. II. The largest grate on which the coal will burn without going out. III. The largest amount of heating surface. IV. The smallest opening through the tubes or flues. "If a man starts out with these principles in view, he may obtain the best results with almost any arrangement of setting, but unfortunately he needs another thing, namely, a large bank account. The problem of obtaining equally good results with a smaller investment of money, is the problem which presents itself to the practical man. "If a builder has unlimited capital at his command, he can scarcely devise any arrangement of boiler setting by means of which he can evaporate more than 12 pounds of water for a pound of anthracite coal after the ashes and cinders are deducted, and when the feed water is fed in boiling hot (212). On the oth...

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Título: A manual of the mechanics of engineering and...
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