Case Study: Arnie's Gas & Tire

Objective

This report summarizes the results of a recent Energy Audit and Installation of Global Energy Savers at LA Car Wash in Ronan, Montana. During the Energy Audit the amount of energy usage in amps will be measured before and after the installation of the Standard Power Perfect Box to the manual wand motors and the automatic car wash breaker box.

arnies gas and tire
Measuring Procedure

The measurements will be reported in amps and volts. The amp difference will be used to determine energy cost of the gas station prior to installation of the Standard Power Perfect Box using the formula below.

Amps X Volts = Watts

(Watts / 1000) = kWh

kWh are the usage units the power company charges for, therefore kWh X Rate per K = Energy Cost

On February 13th, 2010 Satic was commissioned by Arnie's Gas & Tire to install the Standard Power Perfect Box at the location of LA Car Wash at 63145 US HWY 93 in Ronan, Montana. All installations performed by master electrician Rick Curtis of Spectrum Technologies and all measurements were verified by Electrical Engineer Brian Havlovick of Dynamic Solutions.

Using an amp measuring clamp, amp usage was measured on each motor prior to the install. Power was shut off and the install took about ten minutes. Then the motor was turned back on and the amp usage was measured and the difference was calculated.

The percent in amp change will give us an example of the percent of energy savings LA Car Wash will experience due to the installation of the Standard Power Perfect.

Installation Steps

Wire one (1) 3-Phase Power Perfect Box into each of the four 3-phase wand motors. All four motors were Te-team Telco American, Made in China, 3-Phase Inductive load, 5HP, S.F. 1.15, 13/6.5 Amps, 230/460 volts.

 

Wire three (3) 3-Phase Power Perfect Boxes into the main circuit board on the Single 3 Pull, 15 HP, 100 Amp breaker box for the Automatic Touchless Carwash.

Wire one (1) 3-Phase Power Perfect Box into the air compressor. The air compressor was a GE-Tri Clad Induction Motor, S.F. 1.15, 5HP, 16.2 Amps, 230 volts.

Wand motor Amp Usage Measurements
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Wand Motor 1
Reading before install (7.67 Amps)
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Reading after install (7.07 Amps)
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Result: .60 Amp Reduction, 8% Savings
Wand Motor 2
Reading before install (8.59 Amps)
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Reading after install (7.57 Amps)
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Result: 1.02 Amp Reduction, 12% Savings
Wand Motor 3
Reading before install (8.57 Amps)
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Reading after install (7.05 Amps)
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Wand Motor 4
Reading before install (7.92 Amps)
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Reading after install (6.01 Amps)
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Result: 1.52 Amp Reduction, 18% Savings
Result: 1.91 Amp Reduction, 24% Savings
Automatic Car Wash Amp Usage Measurements
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Main Wash Cycle
Reading before install (39.15 Amps)
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Reading after install (31.59 Amps)
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Result: 7.56 Amp Reduction, 16% Savings
Side Wash Cycle
Reading before install (31.23 Amps)
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Reading after install (25.57 Amps)
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Result: 5.66 Amp Reduction, 17% Savings
Air Compressor Amp Usage Measurements
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Reading before install (19.56 Amps)
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Reading after install (17.34 Amps)
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Result: 2.22 Amp Reduction, 11% Savings
Results of Implementation

From the pictures you can see our Amp Meter reads from the carwash install.

On the wand motors it was 8%, 12%, 18% and 24%. This is a weighted average of 15.4% savings on amp usage just on the wand motors. The average is weighted based on total amps used for each unit and the percent each unit saved. The difference can be explained by volume usage and age of the motors.

The Automatic Carwash has three main cycles, the side wash pumps, the main wash pumps and the blowers. On the side wish pumps there was a 17% savings on amp usage and on the main wash pumps there was a 16% savings on amp usages. There was no significant change in amp usage on the blowers, but they will still benefit of being on a surge protector, running cooler & more efficient and decreasing negative harmonics.

On the air compressor there was an 11% savings on amp usages.

Conclusion

The weighted average for the entire installation is 15.2% reduction in amps.

Amps X Volts = Watts

(Watts / 1000) = kWh

As you can see from the formulas above it translates into a 15.2% Savings on the energy usage & cost