For the pump and piping system of Prob. 1439E, plot the required pump head H required (ft
Question:
For the pump and piping system of Prob. 14–39E, plot the required pump head Hrequired (ft of water column) as a function of volume flow rate V̇(gpm). On the same plot, compare the available pump head Havailable versus V̇, and mark the operating point. Discuss.
Data from Problem 14–39E
A water pump is used to pump water from one large reservoir to another large reservoir that is at a higher elevation. The free surfaces of both reservoirs are exposed to atmospheric pressure, as sketched in Fig. P14–39E. The dimensions and minor loss coefficients are provided in the figure. The pump’s performance is approximated by the expression Havailable = H0 – aV̇2, where the shutoff head H0 = 125 ft of water column, coefficient a = 2.50 ft/gpm2, available pump head Havailable is in units of feet of water column, and capacity V̇ is in units of gallons per minute (gpm). Estimate the capacity delivered by the pump.
FIGURE P14–39E
Step by Step Answer:
Fluid Mechanics Fundamentals And Applications
ISBN: 9780073380322
3rd Edition
Authors: Yunus Cengel, John Cimbala