Super efficiency lighting?

[Flyback]

Hello,

Its known that LEDs in the lab have been made to produce 200lm/Watt............

https://www.smartplanet.com/blog/bulletin/philips-shatters-led-efficiency-record/17268

.....is it possible for a fluorescent tube light to give 200lm/Watt?....has anyone ever demonstrated this?

200lm/Watt still only represents about 35% of the power coming to the lamp being turned into light, and the other 65% is burned off as heat. Can LEDs get to 80% efficiency?....is it possible?

 

[tvtech]

Hi Flyback

You asked a simple question and probably want a simple answer?

Simple one here. I am using Osram Duris E3 that emit around (tops) 7 to 8 Lumens EACH per 20 Ma drive current. Highest efficacy in the World right now and made in their Millions. They were designed to replace the florescent tube. 200 Lumens per Watt is crazyness and a an absolute bull.....story. No light that has that kind of power. That is many years away.

Unless, of course, you are bringing Lasers into this....

Regards,
tvtech

 

[Flyback]

I suppose so, its just that we hear of 200lw/Watt leds, but is this figure of 200lm/w also encountered anywhere for fluorescents?

 

[tvtech]

Flyback

You are bouncing up and down. Make up your mind.

200W High Power LEDS are available. Even higher powered ones. What is it with you and outdated Fluorescents????

Regards,
tvtech

 

[Flyback]

outdated Fluorescents

...so it is a physical fact that fluorescents are limited to 100lm/watt?

if not, what is their limit?, or do they potentially have no limit?

Is anyone trying to prodiue fluorescents which are 200lm/w?

 

[tvtech]

I rest my case. You simply are scratching for help or advise.

And won't listen. Good luck.

Regards,
tvtech

 

[Flyback]

The Oslon Square appears to have efficacy of 83 to 148 lm/watt....

https://ledlight.osram-os.com/appli...cifications-for-white-architectural-lighting/

But as I believe it, you cannot guarantee that you will get the yield to be 83lm/w or 148lm/w....in other words, its just by chance what comes out of the fab plant.....and that could be 83lm/w ...or 148lm/w......or anywhere in between...........you agree?

 

[tvtech]

Advise seeker has answered his own questions.

No need for help anymore = post deleted.

 

[tvtech]

The Oslon Square appears to have efficacy of 83 to 148 lm/watt....

https://ledlight.osram-os.com/appli...cifications-for-white-architectural-lighting/

But as I believe it, you cannot guarantee that you will get the yield to be 83lm/w or 148lm/w....in other words, its just by chance what comes out of the fab plant.....and that could be 83lm/w ...or 148lm/w......or anywhere in between...........you agree?

LOL

Flyback looking for advise is giving it

tvtech

 

[ben7]

A more modern fluorescent light is the fluorescent induction light. The bulb has a gas inside, and phosphors on the inside surface of the glass tube. BUT, they use an induction coil and pump it with power at around 200kHz to 300kHz. They have no filaments inside the bulb either. Hence, there is no metal to glass seals to be made, both of which greatly extends the lifetime of the bulb. These have been put to use the past few years as street lighting in our area.

Yeah 200lm/w sounds like BS.

Usually LEDs get around 80 to 120 lumens per watt.

 

[ronv]

LEDs just need another few years to drive the cost down and the lumens up. But in another 10 or 15 years unless something else comes along I think you will see them more and more.

https://www.mge.com/saving-energy/home/lighting/lumens-comparison.htm


https://www.extremetech.com/electronics/143672-cree-releases-landmark-200-lumen-per-watt-led

 

[Mr RB]

The problem with the lumens per watt is that the measurement generally does not typify the use of the light in general lighting (ie room lighting).

The LED getting 200lm per watt would be VERY directional and measured in a very small focus zone at close proximity to the LED.

A fluoro tube is more efficient as it has less light intensity BUT over a much greater area, and is better for room lighting.

Of course if you get the fluoro tube and put it through a focusing lens, so the output was a very small and very directional beam of light (like the LED!), it would have far more than 200 lumens per watt.