Welcome!
This community is for professionals and enthusiasts of our products and services. Share and discuss the best content and new marketing ideas, build your professional profile and become a better marketer together.
What is an achievable realistic lumen per watt that can be achieved in a consumer LED fitting.
LOSSES IN EFFICACY WILL BE CAUSED BY THREE FACTORS:
- Losses due to a higher operating temperature of the LED vs the stated Tj of 25°C
- Electrical Losses from the LED Driver
- Optical losses caused by reflectance, optical lenses and clear or diffused covers
At a junction temperature of 85°C this goes down to 169 lm/W
With power supply efficiency of 90% this comes down to 152 lm/W
With optical losses (normal efficiency ranges from 80 - 90%) this further comes down to about 130 lm/W
Remember this is using the best leds on the market that come at a premium.
This bears out when looking a credible manufacturers of luminaires. see www.cree.com
Their lumanairs generally range from 110lm/w to 130lm/w
Add a Comment
Keep Informed
About This Community
This community is for professionals and enthusiasts of our products and services. Share and discuss the best content and new marketing ideas, build your professional profile and become a better marketer together.
Read Guidelines
Question tools
1 follower(s)
Stats
| Asked: 10/4/18, 5:29 AM |
| Seen: 1522 times |
| Last updated: 10/4/18, 5:33 AM |