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 413
has changed,becoming less as the area of the pipe opening is reduced, imtil the static and total pressure is thesame when the opening is entirety closed, the velocity pressure being zero. For economical operation, a fan, like other power transformation apparatus, should be ratedand used at or near… … HOT BLA8T HEATING 395 From past experience, we know that a single stage fan will not be used for static pressuresexceeding several inches of water so that the tests will be Umited to a maximum total pressureof, say, 5 water static pressure and that a table giving the capacitj and power required for…
Building · Heating · Ventilation
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