Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 225
the fanshould ranj^e from 800 to 1,200feet per minute. Table XXXVI gives therevolutions per minute forfans of different diameter toproduce a linear velocity of1,000 feet, the volume deliv-ered at this speed, and thehorse-power required. The horse-power is com-puted by allowing . 14 H. V.for each… … FiR. 150. Propeller Fan with Wheel on Shaftfor Belt Connec-tioii. These
Architecture · Building · Carpentry
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