Pump Reservoir 80m Well Figure 1 Your family has a small farm which needs to be watered by pumping water from a nearby well. The water needs to be continuously supplied at a rate of 0.003 m³/s through 6-cm internal diameter cast iron pipes. The total required length of piping is measured to be 350m, with an angle valve fully open (KLvahve), a sharp-cdged entrance (KLent), a rounded exit (KLexit) and ten threaded 90° bends (K.elbow). Take the efficiency of the pump to be 0.75, density and viscosity of water to be 1000 kg/m³ and 0.00131kg/m.s, respectively. Use Moody diagram for friction factor.

Elements Of Electromagnetics
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KL
„Pump
Reservoir
80m
Well
Figure 1
Your family has a small farm which needs to be watered by pumping water from a nearby
well. The water needs to be continuously supplied at a rate of 0.003 m³/s through 6-cm
internal diameter cast iron pipcs. The total required length of piping is measured to be
350m, with an angle valve fully open (KLvalve), a sharp-edged entrance (KLent), a rounded
exit (KLexit) and ten threaded 90° bends (KLelbow). Take the efficiency of the pump to be
0.75, density and viscosity of water to be 1000 kg/m³ and 0.00131kg/m.s, respectively.
Use Moody diagram for friction factor.
i. Find the total head loss, httotal given that the pipe diameter is constant.
ii. Determine the rated power of the pump that needs to be purchased, in kW.
iii. Propose one practical way to reduce the total head loss, hL.total
Transcribed Image Text:KL „Pump Reservoir 80m Well Figure 1 Your family has a small farm which needs to be watered by pumping water from a nearby well. The water needs to be continuously supplied at a rate of 0.003 m³/s through 6-cm internal diameter cast iron pipcs. The total required length of piping is measured to be 350m, with an angle valve fully open (KLvalve), a sharp-edged entrance (KLent), a rounded exit (KLexit) and ten threaded 90° bends (KLelbow). Take the efficiency of the pump to be 0.75, density and viscosity of water to be 1000 kg/m³ and 0.00131kg/m.s, respectively. Use Moody diagram for friction factor. i. Find the total head loss, httotal given that the pipe diameter is constant. ii. Determine the rated power of the pump that needs to be purchased, in kW. iii. Propose one practical way to reduce the total head loss, hL.total
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