Pressure difference required for flow in pipe with elevation change (Fig. 6A.2). Water at 68?F is to

Question:

Pressure difference required for flow in pipe with elevation change (Fig. 6A.2). Water at 68?F is to be pumped through 95 ft of standard 3-in. pipe (internal diameter 3.068 in.) into an overhead reservoir.

(a) What pressure is required at the outlet of the pump supply water to the overhead reservoir at a rate of gal/min? At 68?F the viscosity of water is 1.002 cp and the density is 0.9982 g/ml.

(b) What percentage of the pressure drop is needed for overcoming the pipe friction?