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6. September 2012

Case Study – Workshop LED Lighting

Original Lighting Solution

5 Sodium-vapor lamps (400 W each) were employed in workshop lighting system. The total input of each light was 460 W including drivers.

Total 5 x 460 W = 2,300 W.

On average, the billboards were illuminated 8 hours a day, 5 days a week. Therefore, 5 x 8 x 52 x 2,300 = 4,784 kWh were consumed for the workshop illumination during the year.

Total energy costs were 670 EUR per year, when 0.14 EUR/kWh is cosidered for an average energy cost.

New Lighting Solution

We employed one light unit extra in order to improve the illumination quality, get higher light flux levels and reach the illumiantion level uniformity. Altogether, 6 units of LED High Bay Light  were employed, when input is 100 W each. The workshop lighting system requires 600 W.

LED High Bay Light

The energy costs would be 5 x 8 x 52 x 600 x 0.14 = 175 per year. The energy cost reduction is 495 EUR per year, if our lighting solution is implemented.

When counting the cost reduction, we have to involve maintanance cost decrease, too. Originally, the Sodium-vapor lamps with an approx. 12,000 hours operation time were employed. Our LED solution is maintanance free and its operation time is more than 50,000 hours. Maintanace cost saving is approx. 30 EUR per year (a sodium-vapor lamp price and a work price).

Total Lighting Cost Reduction

In this case, the total cost saving reaches 525 EUR per year. The LED lights operation time is approx. 25 years in this case, total workshop lighting cost saving is approx. 13,000 EUR

Comparing the original solution vs. new solution

  Original solution New solution
Input per unit 460 W 100 W
No. of Lights 5 units 6 units
Total input 2,300 W 600 W
Energy costs per year 670 EUR 175 EUR
Maintenance costs per year 30 EUR 0 EUR
Saving per year 525 EUR

Project where the LED High Bay Lights were installed

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Tomáš Krúžek

commercial and technical representative
(+421) 910 270 599
(+421) 32 286 14 84