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 401
creases to zero at the full capacity of the pump,where again no useful work is performed as the head against which the water is pumped is zero.In general, the curve is a semi-elUpse, with the capacity Une as the minor axis. It is worth notingthat up to a certain hmit the maximum efficiencies… … 12.00 1600 Gal. per cola. Fig. 27. The data for a set of such curves are to be taken as follows: The pump is primed and broughtup to the predetermined speed. As soon as there is a decided flow the throttle valve is closed.In this condition the total head is determined and also the hp. input. This…
Building · Heating · Ventilation
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