Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 313
12 indicates the consider- able fluctuations of the draft required. The operation of the fan is automatically regulated so that the slightest variation in the steam pressure causes considerable change in the speed, and con- sequently in the draft. For the mere chemical requirements of the… … Fig. 12. Draft Pressure Chart from Induced Draft Plant. of sixteen tests that the air'supply ranged from 16. i pounds to 40.7 pounds. The theoretical effects of an excess of air upon the combustion of an ordinary anthracite coal are such that the ideal temperature in the heart of the fire decreases…
Engineering
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