The old Hydraulics laboratory in Civil Engineering Department used a roof tank to supply apparatus with water at a nearl

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The Old Hydraulics Laboratory In Civil Engineering Department Used A Roof Tank To Supply Apparatus With Water At A Nearl 1 (44.65 KiB) Viewed 47 times

The old Hydraulics laboratory in Civil Engineering Department used a roof tank to supply apparatus with water at a nearly constant head. The water was collected in an underfloor sump, then pumped back to the roof tank after the experiment (see Fig. Q4 below). The flowrate was 10 litress! The tank was 6 m above the sump, and the length of the pipe route was 15 m. The old 6" (152.4 mm) pipes are now heavily corroded (k = 7.5 mm). The old pump has been scrapped. Evaluate and calculate: a) the head AH that would be specified for a pump to restore the system using the (12) old pipes. b) the pump power value based on the head AH of pump calculated in (a). (2) c) the required pump AH if the pipes were replaced with 150 mm diameter PVC pipes. (6) ROOF TANK 6m 1 PUMP SUMP Fig. 24