A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 275
ired for heatingand ventilation, consists chiefly of steam-jet blowers sjgA fans. FANS. 115. The general construction of a centrifiigfal fan is shown in Figs. 43 and 44. It consists of a wheel a, whichrevolves swiftly within a circular casing c, which has a num-ber of internal vanes, or blades b,… … FiG. 43. Fig. 44. quence of the partial removal of the air from the central tothe outer part of the fan, the pressure of the air at the centerdiminishes accordingly. If the inlet be open, the atmospherewill rush in and restore the pressure to the normal. The distinction commonly made between…
Architecture · Building
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