Basic Pump Formulas

PSIG 90 < Enter PSIGS.G. 1 < Enter S.G. of FluidTDH 207.9 < TDH Result

TDH 120 < Enter TDHS.G. 1 < Enter S.G. of FluidPSIG 51.948051948 < PSIG Result

GPM 7900 < Enter GPMTDH 207.9 < Enter TDHS.G. 1 < Enter S.G. of FluidP.E. 0.82 < Enter Pump Eff.M.E. 1 < Enter Motor Eff.BHP 505.79268293 < BHP Result

Pump Operating Cost ComparisonPump # 1GPM 7900 < Enter GPMTDH 207.9 < Enter TDHS.G. 1 < Enter S.G. of FluidP.E. 0.83 < Enter Pump Eff.M.E. 1 < Enter Motor Eff.# HOURS / DAY 24 < Enter Hours / Day# DAYS / YEAR 300 < Enter Days / Year$ / KWH 0.04 < Enter Cost / kWHYrly Operate Cost 107710.43508 Yearly Cost Result

Pump # 2GPM 7900 < Enter GPMTDH 207.9 < Enter TDHS.G. 1 < Enter S.G. of FluidP.E. 0.845 < Enter Pump Eff.M.E. 1 < Enter Motor Eff.# HOURS / DAY 24 < Enter Hours / Day# DAYS / YEAR 300 < Enter Days / Year$ / KWH 0.04 < Enter Cost / kWHYrly Operate Cost 105798.41553 Yearly Cost Result

Yrly Saved Pump # 2 1912.0195577

Affinity Laws Toolbox

Calculating GPM with RPM Change - Impeller Diameter ConstantDesign RPM 1 3500Design GPM 1 400New RPM 2 2300

New GPM 2 262.86

Calculating TDH with RPM Change - Impeller Diameter ConstantDesign RPM 1 3500Design TDH 1 307New RPM 2 2300

New TDH 2 132.57 2.31569

Calculating BHP with RPM Change - Impeller Diameter ConstantDesign RPM 1 3500Design BHP 1 55New RPM 2 2300

New BHP 2 15.61 3.523876

Affinity Laws Toolbox

Calculating GPM with Impeller Change - Speed is ConstantDesign GPM 1 1000Design Impeller Diameter 1 10New Impeller Diameter 2 8.725

New GPM 2 872

Calculating TDH with Impeller Change - Speed is ConstantDesign TDH 1 150Design Impeller Diameter 1 10New Impeller Diameter 2 8.5

New TDH 2 108.37 1.384083

Calculating BHP with Impeller Change - Speed is ConstantDesign BHP 1 39.8Design Impeller Diameter 1 6New Impeller Diameter 2 5

New BHP 2 23.03 1.728