Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 215
ndpoint, and then sliow what correc-tions are neeessarv in thecase of a given fan under actual workin<ij conditions. There are various methods for determining th(^ capacity of afan at different speeds, and the power necessary to drive it; eachmanufacturer has his own formuUie for tlus purpose,… … Fig. 1 IT. .Sinall. Direct-Connected Exhauster for Ventilating Toilet-Room.s, Chemical Hoods, etc. found to correspond well with those obtained in practice underordinary conditions. As already stated, the rotation of a fan of this type sets in motionthe air between the blades, which, by the action…
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