Pump-Head-Calc-Tool.xls
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Pumping System Head Calculation Tool System Parameters Symbol Unit Present Proposed Diameter of Pipe d M 1.2 1.5 Liquid to be pumped Water Water Density of liquid kg/M3 991 991 Required flow Q M3/sec 5 5 Flow velocity V m/s 4.42 2.83 Actual Pipe length 20.00 20.00 Frictional loss calculation: List of Pipe Fittings No. of 90 deg bends 4.00 2.00 No. of 45 deg bends 1.00 1.00 No. of Gate Valves 2.00 1.00 No. of Check Valves 0.00 0.00 No. of Angle Valves 2.00 1.00 No. of Globe Valves 1.00 1.00 No. of Butterfly Valves 2.00 1.00 No. of NRVs 1.00 1.00 No. of Strainers 1.00 1.00 Flow Elements 0.00 0.00 Total Sum of Friction Factors W 2.20 2.00 W*d/λ 164.73 196.49 Total Equivalent Length of pi Le M 184.73 216.49 Roughness co-eff k 0.0005 0.0005 8904 11130 Frictional factor l 0.0160 0.0153 Frictional Head Hf M of WC 2.46 0.90 Head Loss Across Strainer/Others M of WC 2.1 2.1 Sum of Frictional Head M of WC 4.56 3.00 Potential Head Z M of WC 3 3 Pressure Head M of WC 0 0 Velocity Head M of WC 1.00 0.41 Total System Head M of WC 8.55 6.41 Pumping Energy Required kW 415.7 311.4 Pump Efficiency@operating point % 60% 65% Motor Efficiency@operating point % 90% 90% Input Electric power 769.9 532.35 Power Saved kW 0.0 237.55 % Reduction in power % 0 30.85 Operating hours per day 12 12 Operating days per year 330 330 Energy Saved per year kWh 0 940690.99 Average Energy Cost Rs/kWh 3.5 3.50 Equivalent Length of Bends & Valves Factor for l Calculation 3.71*d/k hp hv Pp Pe
Transcript of Pump-Head-Calc-Tool.xls
Pump HeadPumping System Head Calculation ToolSystem ParametersSymbolUnitPresentProposedDiameter of PipedM1.21.5Liquid to be pumpedWaterWaterDensity of liquidkg/M3991991Required flowQM3/sec55Flow velocityVm/s4.422.83Actual Pipe length20.0020.00Frictional loss calculation:List of Pipe FittingsNo. of 90 deg bends4.002.00No. of 45 deg bends1.001.00No. of Gate Valves2.001.00No. of Check Valves0.000.00No. of Angle Valves2.001.00No. of Globe Valves1.001.00No. of Butterfly Valves2.001.00No. of NRVs1.001.00No. of Strainers1.001.00Flow Elements0.000.00Total Sum of Friction FactorsW2.202.00Equivalent Length of Bends & ValvesW*d/164.73196.49Total Equivalent Length of pipeLeM184.73216.49Roughness co-effk0.00050.0005Factor for l Calculation3.71*d/k890411130Frictional factorl0.01600.0153Frictional HeadHfM of WC2.460.90Head Loss Across Strainer/OthersM of WC2.12.1Sum of Frictional HeadM of WC4.563.00Potential HeadZM of WC33Pressure HeadhpM of WC00Velocity HeadhvM of WC1.000.41Total System HeadM of WC8.556.41Pumping Energy RequiredPpkW415.7311.4Pump Efficiency@operating point%60%65%Motor Efficiency@operating point%90%90%Input Electric powerPe769.9532.35Power SavedkW0.0237.55% Reduction in power%030.85Operating hours per day1212Operating days per year330330Energy Saved per yearkWh0940690.99Average Energy CostRs/kWh3.53.50Savings per yearRs. Lakhs032.92Cost of implementing the ECMRs. Lakhs04.00Simple Payback periodMonths01.46
