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Case Study:Saving energy on HID lighting systems
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Background |
KLEEMANN, Kilkis (August 2008) - First Installation Stage.
Our installation lasted 2 days. It involved two adjacent areas – one with 42 fixtures and another one with 44 fixtures.
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Original Situation |
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The lux measurements we performed indicated that lighting levels in both these spaces were inadequate – 80 to 100 lux. The two areas were being illuminated with 250W mercury vapour lamps.
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The Solution |
Upon agreement, we determined the desired lighting levels in both areas to be at 350 lux.
- We replaced the mercury vapour lamps with metal halide lamps.
- We replaced the magnetic ballasts with Metrolight’s Smart Electronic Ballasts.
- We replaced the luminaires and used high quality reflectors, which disperse the light not only vertically but also sideways, in an attempt to improve the usual, dark and unpleasant appearance of this type of spaces.
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The Result |
AREA A
Lighting levels increased by 400% (>400 lux on average), with the lamps running again at 250W. More than 10% energy savings, occuring from lower ballast losses as opposed to magnetic ballast losses.
AREA B - with openings on the ceiling
Lighting levels increased by 400% (>400 lux on average), with the lamps working at 200W.
More than 43% energy savings (26% from lower ballast losses and reduced wattage and 17% occuring from the adoption of a dimming scenario – power at 50% for 8 hours daily), percentage that is expected to be increased due to adequate lighting levels.
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