reflectors influence to luminary efficiency

1

REFLECTORSReflectors influence to luminary efficiency

2

IntroductionThis 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.

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

4

ConventionalONIX

• No. of Lamps: 2

• Type of Lamps: 58W T8

• Luminance of Lamps: 10400 lm

• Power consumption: 116W

5

Low bay ELUMA

• No. of Lamps: 2

• Type of Lamps: 50W ECO T5

• Luminance of Lamps: 10.000 lm


6

SAULA• No. of Lamps: 2




7

LUMINA

• No. of Lamps: 2




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.

9

ConventionalONIX 2x58W• Mounting height: 7 meters

• Maintenance Factor: 0.8

• Light levels achieved:Eav: 150 luxEmax: 358 lux

10

Low bay ELUMA 2x54W

• Mounting height: 7 meters



11

SAULA2x54W• Mounting height: 7 meters



12

LUMINA2x54W• Mounting height: 7 meters



LOR (light output radio)

13

ModelConventional

low bay lighting

ELUMA Low Bay SAULA LUMINA

LOR 65 75 80 87

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

15

Thank you.

reflectors influence to luminary efficiency

Business

type of lamps

w t8luminance of lamps

w eco t5luminance of

metersmaintenance factor

lmpower consumption

low bay elumano

different type fittings

efficiency of luminaries