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 28
passes section A in unit time.Because of (2) a weight W also passes B in the same time. / W \ Kinetic energy of IF at ^ = >2 MV-* (where M = j Let Pi = the radial or static pressure at section A measured in pounds per sq. ft. andP2 the static pressure at B measured in pounds per sq. ft.… … Total Pr. = H=h^h=pr. loss + final ve/. pr.Vel. Pr~ h=H-h, Fig. 4. head at the section. The total energy of TF at A = Iff-^ + Zi + —M. Likewise, the total (y,2 p \—=- + Z2 -\ ). Since there is no external frictional resistance the2q dJ •9total energy at A equals that at B or 2g ^ £> V2^ , P2…
Building · Heating · Ventilation
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