This presentation describes how big is influence of reflector to the efficiency of luminaries even if these luminaries are of the same power and are equipped with the same type of lamps and used in identical applications. For more information please contact: ELEKTROS TAUPYMO SPRENDIMAI, UAB P. Luksio str. 1, Vilnius 08221, Lithuania E: info@ecolight.lt T: +370 5 2328207 F: +370 5 2784262 W: www.ecolight.lt

1. REFLECTORS
Reflectors influence to luminary efficiency
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2. Introduction
This presentation describes how big is influence
of reflector to the efficiency of luminaries even
if these luminaries are of the same power and
are equipped with the same type of lamps and
are used in identical applications.
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3. Lighting units compared in
this study
•
•
•
•
LUXMAY ONIX-258 2x58W T8
ELUMA Low Bay SE-EN4/2L/50 2x50W T5
SAULA ES-EN4/2L/50 2x50W T5
LUMINA EL-EN4/2L/50 2x50W T5
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4. ConventionalO
NIX
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•
•
•
No. of Lamps: 2
Type of Lamps: 58W T8
Luminance of Lamps: 10400 lm
Power consumption: 116W
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5. Low bay ELUMA
•
•
•
•
No. of Lamps: 2
Type of Lamps: 50W ECO T5
Luminance of Lamps: 10.000 lm
Power consumption: 103W
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6. SAULA
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•
•
•
No. of Lamps: 2
Type of Lamps: 50W ECO T5
Luminance of Lamps: 10.000 lm
Power consumption: 103W
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7. LUMINA
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•
•
•
No. of Lamps: 2
Type of Lamps: 50W ECO T5
Luminance of Lamps: 10.000 lm
Power consumption: 103W
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8. All measurements were made using the same
room and mounting parameters incl. number
of luminaries and distance between them.
Simulations were made using DIALux v. 4.11
and ELUMDAT files provided from the
manufacturers.
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9. Conventional
ONIX 2x58W
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•
•
Mounting height: 7 meters
Maintenance Factor: 0.8
Light levels achieved:
Eav: 150 lux
Emax: 358 lux
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10. Low bay
ELUMA 2x54W
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•
•
Mounting height: 7 meters
Maintenance Factor: 0.8
Light levels achieved:
Eav: 195 lux
Emax: 483 lux
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11. SAULA
2x54W
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•
•
Mounting height: 7 meters
Maintenance Factor: 0.8
Light levels achieved:
Eav: 241 lux
Emax: 552 lux
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12. LUMINA
2x54W
•
•
•
Mounting height: 7 meters
Maintenance Factor: 0.8
Light levels achieved:
Eav: 252 lux
Emax: 572 lux
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13. LOR
(light output radio)
Model
Conventional
low bay
lighting
ELUMA Low
Bay
SAULA
LUMINA
LOR
65
75
80
87
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14. Conclusion
•
Reflector construction has an essential
influence into lighting efficiency
•
For different heights different types of
luminaries must be chosen
•
Light levels can differ up to 2 times if to
use same power but different type
fittings
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15. Thank you.
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