Water at 20◦C flows from reservoir 1 to reservoir 2 through a 0.8-m-diameter commercial steel pipe, as illustrated in Figure EP 8.13. The difference in the total head, ΔH between the two reservoirs is...

Water at 20◦C flows from reservoir 1 to reservoir 2 through a 0.8-m-diameter commercial steel pipe, as illustrated in Figure EP 8.13. The difference in the total head, ΔH between the two reservoirs is 150 m. The pipe system contains two reservoirs, five single pipes with a total length of 1200 m, one fully open globe valve to regulate the flow, and four regular 90◦ threaded elbows. The pipe entrance from reservoir 1 is square-edged, and the pipe exit to reservoir 2 is rounded. Assume the Darcy–Weisbach friction factor is chosen to model the flow resistance. (a) Determine the total head loss due to pipe friction and pipe components between points 1 and 2. (b) Determine the velocity in the pipe.