A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 277
If thesystem is too large for one fan, it should be divided into.smaller but independent systems. Of course, two or more fans of equal power may becoupled, if they are driven by the same coimtershaft, or are otherwise provided withmeans for maintaining anequality of speed andpressure. 117. The… … Fig. 45. I 17 OF BUILDINGS. 81 they whirl the passing air, the centrifugal force thus gener-ated is largely wasted and the principal effect is exertedby the inclined faces of the vanes which press the airforwards. This variety of fan applies power to very poor advantage,and is the most wasteful and…
Architecture · Building
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