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Pump Energy Savings Calculator

Calculate your potential energy savings with the pump energy savings tool.

Using actual pump specifications and flow rates will result in more accurate calculated energy costs.

Note: If the pump specifications are unknown, general assumptions can be made to give you an example of energy savings.

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Minimum Flow

Enter a value from 20 - 100.

This is a percentage of Rated Flow and represents the lowest flow rate for the application.

Static Head

This is simply the elevation change from the source to the destination. The elevation change must be converted to a percentage value.

Example:

If a system has 100ft of head pressure at rated flow, and the liquid being pumped is raised 10ft, the value is 10%.

Pressure Zero Flow

Enter a value of 100 or greater.

Rated Flow

Enter the efficiency of the pump when operated at the rated flow rate.

5-30Hp typical 45-72%

40-150Hp typical 55-75%

200Hp & Up typical 75-90%

Minimum Flow

Enter the efficiency of the pump when operated at the minimum flow rate.

5-30Hp typical 25-55%

40-150Hp typical 30-60%

200Hp & Up typical 55-80%

The Specific Gravity of Water is 1.0
Specific Gravity
Material Sp. Gr.
Acetone 0.79
Alcohol, Ethyl 0.789
Alcohol, Methyl 0.791
Brine 1.2
Aviation Gasoline 0.72
Cement Slurry 1.44
Crude Oil 0.85
Diesel Fuel 0.84
Gasoline 0.74
Hydraulic Fluid 0.86
Jet Fuel, JP-4 0.78
Water 1.0
Sea Water 1.03
Rated Speed

The value entered for Motor Base Speed will be used as the Pump Rated Speed.

Rated Flow

This value should reflect the rated flow for the system. It is used to calculate Hp requirements. Hp = Flow x Head / 3960

Minimum Flow

Enter the minimum flow rate for the system.

Static Head

This is simply the elevation change from the source to the destination. The elevation change is a measurement of pressure in feet of Head.

Example:

If a system raises the liquid being pumped by 14ft of elevation from the source to the destination, a value of 14 is the static Head.

Pressure Rated Flow

The pressure is a resistance to flow and is meadsured in feet of head.

Formula:

Feet of Head = p.s.i. x 2.31 / specific gravity

Pressure Min Flow

Enter a value that is greater than "Pressure @ Rated Flow. This value is used to calculate Hp requirements.

Pressure Zero Flow

Value should be equal to or greater than the Pressure @ Minimum Flow. This value is used to draw the pump curve on the graph.

Rated Flow

Enter the efficiency of the pump when operated at the rated flow rate.

5-30Hp typical 45-72%

40-150Hp typical 55-75%

200Hp & Up typical 75-90%

Minimum Flow

Enter the efficiency of the pump when operated at the minimum flow rate.

5-30Hp typical 25-55%

40-150Hp typical 30-60%

200Hp & Up typical 55-80%

Specific Gravity
Material Sp. Gr.
Acetone 0.79
Alcohol, Ethyl 0.789
Alcohol, Methyl 0.791
Brine 1.2
Aviation Gasoline 0.72
Cement Slurry 1.44
Crude Oil 0.85
Diesel Fuel 0.84
Gasoline 0.74
Hydraulic Fluid 0.86
Jet Fuel, JP-4 0.78
Water 1.0
Sea Water 1.03
Static Head

This is simply the elevation change from the source to the destination. The elevation change must be converted to a percentage value.

Example:

If a system has 100ft of head pressure at rated flow, and the liquid being pumped is raised 10ft, the value is 10%.

Rated Flow

Enter the value indicated on the graph for the specified flow.

Rated Flow

Enter the value indicated on the graph for the specified flow.

Motor Efficiencies
1800 RPM
Rated Hp
STD EDD.
% Eff
1329 OPD
% Eff
1329 TEFC
% Eff
1 74.4% 82.5% 82.5%
1.5 76.3% 84.0% 84.0%
2 77.8% 84.0% 84.0%
3 80.3% 86.5% 87.5%
5 83.6% 87.5% 87.5%
7.5 84.6% 88.5% 89.5%
10 85.9% 89.5% 89.5%
15 86.8% 91.0% 91.0%
20 88.8% 91.0% 91.0%
25 89.4% 91.7% 92.4%
30 90.0% 92.4% 92.4%
40 90.4% 93.0% 93.0%
50 91.3% 93.6% 93.0%
60 91.1% 93.6% 93.6%
75 91.3% 94.1% 94.1%
100 91.6% 94.1% 94.5%
125 91.6% 94.5% 94.5%
150 92.2% 95.0% 95.0%
200 93.5% 95.0% 95.0%
250 95.0% 95.4%
300 95.0% 95.4%
350 95.4%
400 95.8%
450
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1000
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Pump Energy Savings Calculators

INPUTS

Minimum Flow %
Static Head %
% Pressure @ Zero Flow %

Efficiency

@ Rated Flow %
@ Minimum Flow %
Specific Gravity In Hg
Annual Operating Time hours
Cost per kilowatt Hour cents

Motor

Rated Power
Base Speed RPM
Efficiency %


OUTPUTS



Summary
Control Method Annual US$
Throttling Valve $0.00
VFD Control $0.00
SAVINGS WITH VFD: $0.00

OUTPUTS



Throttling Valve Summary
Control Method Annual US$
Throttling Valve $0.00
VFD Control $0.00
SAVINGS WITH VFD: $0.00

Bypass Summary
Control Method Annual US$
Bypass $0.00
VFD Control $0.00
SAVINGS WITH VFD: $0.00

OUTPUTS



Summary
Control Method Annual US$
Throttling Valve $0.00
VFD Control $0.00
SAVINGS WITH VFD: $0.00