Answer Happy

A centrifugal pump is used to transfer water between two open reservoirs. The piping system consists of 380 m commercial steel pipe with an internal diameter of 300 mm, two regular 90∘ flange elbows and an open gate valve. The performance data for the pump by manufacturer is given as follows: Table 1: Manufacturer data of centrifugal pump a) Illustrate the problem with a schematic diagram and generate the required pumping head (hpump ​) at the flow rate of 525 m3 /hour if the difference in elevation between the two reservoirs is 20 m. b) Repeat calculation in a) for all volume flow rates in Table land tabulate the results in a table. Construct the relationship of required pumping head, Hrequired ​(hpump ​) as a function of volume flow rate. On the same plot, construct the pump performance curve of available pump head Havailable versus flowrate. ​ c) From the plot that you have constructed, determine the operating point (intersection point Given: - The density of water, ρ=1000 kg/m3 - The kinematic viscesity of water, v=1.003×10−6 m2/s - Gate valve (fully opened), Kt​=0.15 - Elbow 90∘ (regular flanged), KL​=0.3 - Surface roughness for commercial steel pipe, ε=0.045 mm. (CO3/PO3/C5)