8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 15

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983120983137983143983141 983089 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

983090983090983087983088983089983087983090983088983089983092983144983156983156983152983098983087983087983159983159983159983086983149983151983140983141983154983150983152983157983149983152983145983150983143983156983151983140983137983161983086983139983151983149983087983155983161983155983156983141983149983085983151983152983156983145983149983145983162983137983156983145983151983150983085983158983155983085983139983151983149983152983151983150983141983150983156983085983151983152983156983145983149983145983162983137983156983145983151983150983087

8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 25

Digital Edition Articles News Advertise Editorial Trade Shows Contact

System Optimization vs ComponentSystem Optimization vs ComponentSystem Optimization vs ComponentSystem Optimization vs ComponentOptimizationOptimizationOptimizationOptimization

Motor Solutions

Does it really make sense to increase the efficiency of your pump andmotor without addressing the downstream components What is thevalue (payback) of a premium efficiency motor versus a standard efficientmotor Is it really worth replacing a 70 percent efficient pump with a 75percent efficient unit Some people would think this is a no brainer

There are a number of factors that should be taken into account beforereplacing a motor or pump Letrsquos put this approach in perspective Wouldyou purchase the most fuel efficient car on the market (to reduce you

energy cost) then drive it with the parking brake on I hardly think so Insimplistic terms that is component efficiency gaining efficiency in onearea while wasting the energy generated in another I have prepared a

983120983137983143983141 983090 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

983090983090983087983088983089983087983090983088983089983092983144983156983156983152983098983087983087983159983159983159983086983149983151983140983141983154983150983152983157983149983152983145983150983143983156983151983140983137983161983086983139983151983149983087983155983161983155983156983141983149983085983151983152983156983145983149983145983162983137983156983145983151983150983085983158983155983085983139983151983149983152983151983150983141983150983156983085983151983152983156983145983149983145983162983137983156983145983151983150983087

8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 35

simple spread sheet that provides in detail the benefits of systemefficiency versus component efficiency

pumping systemdischarge is being

example operatespercent of the

factored into thewhere the

efficiencies for the VFD and gearbox at 100 percent since they were notutilized Under the based condition the system the total power requiredis approximately 362 horsepower almost 73 horsepower is being lost(wasted) across a throttling valve In addition the pump is operating backon the curve at 65 percent efficiency Under these conditions the total

system efficiency is 49 percent

Adding aAdding aAdding aAdding a VFDVFDVFDVFDColumn B provides total the new operating conditions with the additionof a variable frequency drive The head required has been reduced to 150feet (4572 meters) since the loss across the valve has been eliminated by

reducing the speed of the pump to meet required system demand Motorefficiency remains the same a 2 percent loss has been added due to heatgenerated across the drive Observe the dramatic improvement in theoverall system efficiency (81 percent) and the total operating costreduction from $82148 to $37150 equals cost savings of $44999 peryear Not to mention the improved reliability and subsequent reductionin maintenance cost and increased productivity

What about Pump EfficiencyWhat about Pump EfficiencyWhat about Pump EfficiencyWhat about Pump EfficiencyColumn C addresses the impact on the system by improving theefficiency of the pump Nothing else in the system was changed Note the

minimal improvement of the overall system efficiency (53 percent) byincreasing the pump efficiency 5 percent The 50 feet (1524 meters) headloss across the valve remain therefore the total power required is 336

Digital Edition

Print or Digital Edition

983120983137983143983141 983091 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

983090983090983087983088983089983087983090983088983089983092983144983156983156983152983098983087983087983159983159983159983086983149983151983140983141983154983150983152983157983149983152983145983150983143983156983151983140983137983161983086983139983151983149983087983155983161983155983156983141983149983085983151983152983156983145983149983145983162983137983156983145983151983150983085983158983155983085983139983151983149983152983151983150983141983150983156983085983151983152983156983145983149983145983162983137983156983145983151983150983087

8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 45

horsepower Not much of a saving based on the cost of a new pumpinstallation cost and potential piping changes Factor in the ongoingreliability issues (pump is still operating back on the curve the $5868would be very difficult to justify

Improved Motor EfficiencyImproved Motor EfficiencyImproved Motor EfficiencyImproved Motor EfficiencyColumn D identifies potential savings when motor efficiency is improvedby 2 percent Again nothing has changed in the system with the exceptionof an additional 5 feet of friction loss across the valve as a result of thereduced slip in the premium efficiency motor (head increases to thesquare of the speed) In this case the system efficiency remains the sameat 49 percent Note the power required for the additional friction hasincreased to 779 horsepower The total power required was reduced to3612 horsepower (a reduction of 04 horsepower) with a total savings of$103 per year

THE BIGTHE BIGTHE BIGTHE BIG PICTUREPICTUREPICTUREPICTURENow add the increased maintenance cost due to the pump operating

away from BEP (yoursquore driving the energy efficient car with the parkingbrake on) and the component efficiency approach looks even lessattractive

I think it goes without saying but Irsquoll say it anyway think system

_________________________________________________________________________

ABOUT THEABOUT THEABOUT THEABOUT THE AUTHORAUTHORAUTHORAUTHORWilliam Livoti is the power generation business development managerfor WEG Electric Corporation With over thirty years of experience in the

pump industry designing field testing repairing and troubleshootingmechanical seals compressors and pumping systems William is anactive member of ASME Vibration Institute IEEE PCIC PowerEngineering Society Hydraulic Institute and HI working groups and hasserved the vice chair on the board of directors of Pump Systems Matter _________________________________________________________________________

MODERN PUMPINGMODERN PUMPINGMODERN PUMPINGMODERN PUMPING TODAYTODAYTODAYTODAY December 2013 December 2013 December 2013 December 2013

Did you enjoy this articleSubscribe to the FREE Digital Edition of Modern Pumping TodayMagazine

Share this story

983124983159983141983141983156 983088

983088983116983145983147983141

983088

983120983137983143983141 983092 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

983090983090983087983088983089983087983090983088983089983092983144983156983156983152983098983087983087983159983159983159983086983149983151983140983141983154983150983152983157983149983152983145983150983143983156983151983140983137983161983086983139983151983149983087983155983161983155983156983141983149983085983151983152983156983145983149983145983162983137983156983145983151983150983085983158983155983085983139983151983149983152983151983150983141983150983156983085983151983152983156983145983149983145983162983137983156983145983151983150983087

8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 55

Privacy Policy Disclaimer Sitemap

Highlands Publications Inc 2014 All Rights Reserved

983120983137983143983141 983093 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

983090983090983087983088983089983087983090983088983089983092983144983156983156 983087983087 983140 983145 983156 983140 983087 983156 983156983145 983145 983156983145 983156 983156983145 983145 983156983145 983087

8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 25

Digital Edition Articles News Advertise Editorial Trade Shows Contact

System Optimization vs ComponentSystem Optimization vs ComponentSystem Optimization vs ComponentSystem Optimization vs ComponentOptimizationOptimizationOptimizationOptimization

Motor Solutions

Does it really make sense to increase the efficiency of your pump andmotor without addressing the downstream components What is thevalue (payback) of a premium efficiency motor versus a standard efficientmotor Is it really worth replacing a 70 percent efficient pump with a 75percent efficient unit Some people would think this is a no brainer

There are a number of factors that should be taken into account beforereplacing a motor or pump Letrsquos put this approach in perspective Wouldyou purchase the most fuel efficient car on the market (to reduce you

energy cost) then drive it with the parking brake on I hardly think so Insimplistic terms that is component efficiency gaining efficiency in onearea while wasting the energy generated in another I have prepared a

983120983137983143983141 983090 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

983090983090983087983088983089983087983090983088983089983092983144983156983156983152983098983087983087983159983159983159983086983149983151983140983141983154983150983152983157983149983152983145983150983143983156983151983140983137983161983086983139983151983149983087983155983161983155983156983141983149983085983151983152983156983145983149983145983162983137983156983145983151983150983085983158983155983085983139983151983149983152983151983150983141983150983156983085983151983152983156983145983149983145983162983137983156983145983151983150983087

8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 35

simple spread sheet that provides in detail the benefits of systemefficiency versus component efficiency

pumping systemdischarge is being

example operatespercent of the

factored into thewhere the

efficiencies for the VFD and gearbox at 100 percent since they were notutilized Under the based condition the system the total power requiredis approximately 362 horsepower almost 73 horsepower is being lost(wasted) across a throttling valve In addition the pump is operating backon the curve at 65 percent efficiency Under these conditions the total

system efficiency is 49 percent

Adding aAdding aAdding aAdding a VFDVFDVFDVFDColumn B provides total the new operating conditions with the additionof a variable frequency drive The head required has been reduced to 150feet (4572 meters) since the loss across the valve has been eliminated by

reducing the speed of the pump to meet required system demand Motorefficiency remains the same a 2 percent loss has been added due to heatgenerated across the drive Observe the dramatic improvement in theoverall system efficiency (81 percent) and the total operating costreduction from $82148 to $37150 equals cost savings of $44999 peryear Not to mention the improved reliability and subsequent reductionin maintenance cost and increased productivity

What about Pump EfficiencyWhat about Pump EfficiencyWhat about Pump EfficiencyWhat about Pump EfficiencyColumn C addresses the impact on the system by improving theefficiency of the pump Nothing else in the system was changed Note the

minimal improvement of the overall system efficiency (53 percent) byincreasing the pump efficiency 5 percent The 50 feet (1524 meters) headloss across the valve remain therefore the total power required is 336

Digital Edition

Print or Digital Edition

983120983137983143983141 983091 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

983090983090983087983088983089983087983090983088983089983092983144983156983156983152983098983087983087983159983159983159983086983149983151983140983141983154983150983152983157983149983152983145983150983143983156983151983140983137983161983086983139983151983149983087983155983161983155983156983141983149983085983151983152983156983145983149983145983162983137983156983145983151983150983085983158983155983085983139983151983149983152983151983150983141983150983156983085983151983152983156983145983149983145983162983137983156983145983151983150983087

8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 45

horsepower Not much of a saving based on the cost of a new pumpinstallation cost and potential piping changes Factor in the ongoingreliability issues (pump is still operating back on the curve the $5868would be very difficult to justify

Improved Motor EfficiencyImproved Motor EfficiencyImproved Motor EfficiencyImproved Motor EfficiencyColumn D identifies potential savings when motor efficiency is improvedby 2 percent Again nothing has changed in the system with the exceptionof an additional 5 feet of friction loss across the valve as a result of thereduced slip in the premium efficiency motor (head increases to thesquare of the speed) In this case the system efficiency remains the sameat 49 percent Note the power required for the additional friction hasincreased to 779 horsepower The total power required was reduced to3612 horsepower (a reduction of 04 horsepower) with a total savings of$103 per year

THE BIGTHE BIGTHE BIGTHE BIG PICTUREPICTUREPICTUREPICTURENow add the increased maintenance cost due to the pump operating

away from BEP (yoursquore driving the energy efficient car with the parkingbrake on) and the component efficiency approach looks even lessattractive

I think it goes without saying but Irsquoll say it anyway think system

_________________________________________________________________________

ABOUT THEABOUT THEABOUT THEABOUT THE AUTHORAUTHORAUTHORAUTHORWilliam Livoti is the power generation business development managerfor WEG Electric Corporation With over thirty years of experience in the

pump industry designing field testing repairing and troubleshootingmechanical seals compressors and pumping systems William is anactive member of ASME Vibration Institute IEEE PCIC PowerEngineering Society Hydraulic Institute and HI working groups and hasserved the vice chair on the board of directors of Pump Systems Matter _________________________________________________________________________

MODERN PUMPINGMODERN PUMPINGMODERN PUMPINGMODERN PUMPING TODAYTODAYTODAYTODAY December 2013 December 2013 December 2013 December 2013

Did you enjoy this articleSubscribe to the FREE Digital Edition of Modern Pumping TodayMagazine

Share this story

983124983159983141983141983156 983088

983088983116983145983147983141

983088

983120983137983143983141 983092 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

983090983090983087983088983089983087983090983088983089983092983144983156983156983152983098983087983087983159983159983159983086983149983151983140983141983154983150983152983157983149983152983145983150983143983156983151983140983137983161983086983139983151983149983087983155983161983155983156983141983149983085983151983152983156983145983149983145983162983137983156983145983151983150983085983158983155983085983139983151983149983152983151983150983141983150983156983085983151983152983156983145983149983145983162983137983156983145983151983150983087

8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 55

Privacy Policy Disclaimer Sitemap

Highlands Publications Inc 2014 All Rights Reserved

983120983137983143983141 983093 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

983090983090983087983088983089983087983090983088983089983092983144983156983156 983087983087 983140 983145 983156 983140 983087 983156 983156983145 983145 983156983145 983156 983156983145 983145 983156983145 983087

8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 35

simple spread sheet that provides in detail the benefits of systemefficiency versus component efficiency

pumping systemdischarge is being

example operatespercent of the

factored into thewhere the

efficiencies for the VFD and gearbox at 100 percent since they were notutilized Under the based condition the system the total power requiredis approximately 362 horsepower almost 73 horsepower is being lost(wasted) across a throttling valve In addition the pump is operating backon the curve at 65 percent efficiency Under these conditions the total

system efficiency is 49 percent

Adding aAdding aAdding aAdding a VFDVFDVFDVFDColumn B provides total the new operating conditions with the additionof a variable frequency drive The head required has been reduced to 150feet (4572 meters) since the loss across the valve has been eliminated by

reducing the speed of the pump to meet required system demand Motorefficiency remains the same a 2 percent loss has been added due to heatgenerated across the drive Observe the dramatic improvement in theoverall system efficiency (81 percent) and the total operating costreduction from $82148 to $37150 equals cost savings of $44999 peryear Not to mention the improved reliability and subsequent reductionin maintenance cost and increased productivity

What about Pump EfficiencyWhat about Pump EfficiencyWhat about Pump EfficiencyWhat about Pump EfficiencyColumn C addresses the impact on the system by improving theefficiency of the pump Nothing else in the system was changed Note the

minimal improvement of the overall system efficiency (53 percent) byincreasing the pump efficiency 5 percent The 50 feet (1524 meters) headloss across the valve remain therefore the total power required is 336

Digital Edition

Print or Digital Edition

983120983137983143983141 983091 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

983090983090983087983088983089983087983090983088983089983092983144983156983156983152983098983087983087983159983159983159983086983149983151983140983141983154983150983152983157983149983152983145983150983143983156983151983140983137983161983086983139983151983149983087983155983161983155983156983141983149983085983151983152983156983145983149983145983162983137983156983145983151983150983085983158983155983085983139983151983149983152983151983150983141983150983156983085983151983152983156983145983149983145983162983137983156983145983151983150983087

8132019 Http WwwmodernpumpingtodaySystem Optimization vs Component Optimization

httpslidepdfcomreaderfullhttp-wwwmodernpumpingtodaysystem-optimization-vs-component-optimization 45

horsepower Not much of a saving based on the cost of a new pumpinstallation cost and potential piping changes Factor in the ongoingreliability issues (pump is still operating back on the curve the $5868would be very difficult to justify

Improved Motor EfficiencyImproved Motor EfficiencyImproved Motor EfficiencyImproved Motor EfficiencyColumn D identifies potential savings when motor efficiency is improvedby 2 percent Again nothing has changed in the system with the exceptionof an additional 5 feet of friction loss across the valve as a result of thereduced slip in the premium efficiency motor (head increases to thesquare of the speed) In this case the system efficiency remains the sameat 49 percent Note the power required for the additional friction hasincreased to 779 horsepower The total power required was reduced to3612 horsepower (a reduction of 04 horsepower) with a total savings of$103 per year

THE BIGTHE BIGTHE BIGTHE BIG PICTUREPICTUREPICTUREPICTURENow add the increased maintenance cost due to the pump operating

away from BEP (yoursquore driving the energy efficient car with the parkingbrake on) and the component efficiency approach looks even lessattractive

I think it goes without saying but Irsquoll say it anyway think system

_________________________________________________________________________

ABOUT THEABOUT THEABOUT THEABOUT THE AUTHORAUTHORAUTHORAUTHORWilliam Livoti is the power generation business development managerfor WEG Electric Corporation With over thirty years of experience in the

pump industry designing field testing repairing and troubleshootingmechanical seals compressors and pumping systems William is anactive member of ASME Vibration Institute IEEE PCIC PowerEngineering Society Hydraulic Institute and HI working groups and hasserved the vice chair on the board of directors of Pump Systems Matter _________________________________________________________________________

MODERN PUMPINGMODERN PUMPINGMODERN PUMPINGMODERN PUMPING TODAYTODAYTODAYTODAY December 2013 December 2013 December 2013 December 2013

Did you enjoy this articleSubscribe to the FREE Digital Edition of Modern Pumping TodayMagazine

Share this story

983124983159983141983141983156 983088

983088983116983145983147983141

983088

983120983137983143983141 983092 983151983142 983093983123983161983155983156983141983149 983119983152983156983145983149983145983162983137983156983145983151983150 983158983155983086 983107983151983149983152983151983150983141983150983156 983119983152983156983145983149983145983162983137983156983145983151983150 983164 983117983151983140983141983154983150 983120983157983149983152983145983150983143 983124983151983140983137983161983214

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horsepower Not much of a saving based on the cost of a new pumpinstallation cost and potential piping changes Factor in the ongoingreliability issues (pump is still operating back on the curve the $5868would be very difficult to justify

Improved Motor EfficiencyImproved Motor EfficiencyImproved Motor EfficiencyImproved Motor EfficiencyColumn D identifies potential savings when motor efficiency is improvedby 2 percent Again nothing has changed in the system with the exceptionof an additional 5 feet of friction loss across the valve as a result of thereduced slip in the premium efficiency motor (head increases to thesquare of the speed) In this case the system efficiency remains the sameat 49 percent Note the power required for the additional friction hasincreased to 779 horsepower The total power required was reduced to3612 horsepower (a reduction of 04 horsepower) with a total savings of$103 per year

THE BIGTHE BIGTHE BIGTHE BIG PICTUREPICTUREPICTUREPICTURENow add the increased maintenance cost due to the pump operating

away from BEP (yoursquore driving the energy efficient car with the parkingbrake on) and the component efficiency approach looks even lessattractive

I think it goes without saying but Irsquoll say it anyway think system

_________________________________________________________________________

ABOUT THEABOUT THEABOUT THEABOUT THE AUTHORAUTHORAUTHORAUTHORWilliam Livoti is the power generation business development managerfor WEG Electric Corporation With over thirty years of experience in the

pump industry designing field testing repairing and troubleshootingmechanical seals compressors and pumping systems William is anactive member of ASME Vibration Institute IEEE PCIC PowerEngineering Society Hydraulic Institute and HI working groups and hasserved the vice chair on the board of directors of Pump Systems Matter _________________________________________________________________________

MODERN PUMPINGMODERN PUMPINGMODERN PUMPINGMODERN PUMPING TODAYTODAYTODAYTODAY December 2013 December 2013 December 2013 December 2013

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