POWER SAVING BY ROCKSOLID INDUSTRIAL SOLUTIONS SYSTEMS REQUIRING PUMPS USING VALVE CONTROL SYSTEMS REQUIRING FANS USING DAMPER CONTROL SAVE GOOD $MONEY$ POWER SAVINGS USING VFD'S VARIABLE FREQUENCY DRIVES

Pump Curve

PUMP MOTOR DATA 125 HP MOTOR 1750 RPM 87.5 EFFICENCY OPERATING 16 HOURS PER DAY 365 DAYS PER YEAR DISCHARGE VALVE 30% CLOSED 800 GPM 450 FEET OF HEAD USAGE 110 HP~

. Date Read kwh Amount 2/2/ $4, /4/ $4, /2/ $4, $48, month 11/2/ $4, /4/ $4, /2/ $5, /2/ $4, /5/ $2, /2/ $ /4/ $3, /4/ $4, /3/ $4, /2/ $4, /4/ $4, /2/ $4, /2/ $4, /4/ $6, /19/ $4, /21/ $4, /17/ $2, /20/ $3, /21/ $3, /18/ $3, /19/ $4, Typical power bill for pumping station Please note twelve month avarage.

DO A SAMPLE FOR YOUR APPLACATION. CLICK TO RUN APPLACATION. THE SPREADSHEET IS MADE FOR A PUMP RUNNING WITH A DISCHARGE VALVE THROTTLED CLOSED TO 70% FLOW. BASED ON THIS CAN WE SAVE YOU $MONEY$ Step 9. Add cost of VFD to Installation Cost $24, VFD Cost $18, Install Cost $42, Total Cost Step 10. Divide total cost by annual savings= return on investment in years $42, Cost/Savings $20, ROI in years In the example ROI has been calculated with one pump in operation, the cost of two 125 HP VFD units and Installation (the second is for the standby pump).