Mechanical equipment of buildings; a reference book for engineers and architects (1916)
Harding, Louis Allen, Willard, Arthur C. (Arthur Cutts), 1878-1960 · New York Wiley · leaf 411
s the greatest single improvement ever made in the design of a centrifugal fan. This fan 392 HEATING AND VENTILATION is the invention of S. C. Davidson, of Belfast, Ireland, and is known as the Sirocco fan or blower.(Fig. 41.) The fan wheel has from forty-eight to sLxtj^-four blades of shallow… … Fig. 40. Standard Steei. Ii.ate Fax AVheel.
Building · Heating · Ventilation
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