'Most energy-efficient' LED light revealed by Philips

[Starboard Tack]

The lamps are intended to replace the fluorescent tube lighting used in offices and industry, which currently account for more than half of the world's total lighting.

In the US, for example, such lighting consumes around 200 terawatts of electricity annually. Swapping to the energy-efficient lamps could save $12bn (£7.8bn) and stop 60 million metric tonnes of carbon dioxide from being released into the atmosphere, according to Philips

http://www.bbc.co.uk/news/technology-22106718

[phantom power]

1. wonder if they meant 200 terawatt-hours?

Reporters mixing up power with energy -- super pet peeve

[OKIsItJustMe]

2. Yes they did

Here’s the press release:

http://www.newscenter.philips.com/main/standard/news/press/2013/20130411-philips-creates-the-world-s-most-energy-efficient-warm-white-led-lamp.wpd

[font face=Serif][font size=3]…

In the US alone, for example, fluorescent lights consume around 200 terawatts-hours of electricity annually. If these lights were all replaced with 200lm/W TLEDs, the US would use around 100 terawatts-hours less energy (equivalent to 50 medium sized power plants) saving more than US$12 billion and preventing around 60 million metric tons of CO[font size="1"]₂[/font] from being released into the atmosphere.

…[/font][/font]

[formercia]

3. Those High efficiency LEDs work well

The ones I use now are rated at 130 Lumens/Watt, which is the best available commercially. They put out very little energy as heat, which makes the design of fixtures much simpler.

[DCKit]

4. And the prices are finally moving into the realm of possibility. nt

[formercia]

5. Under $2. for 1W units

They will blind you temporarily if you look into one directly.

1700 Lumens is approximately what a 100 W incandescent light puts out.

[kristopher]

6. A bit more information

Philips Ups LED Ante With 200-Lumens-per-Watt Tube

An LED to replace fluorescent tubes gets record-setting lab test results.


JEFF ST. JOHN: APRIL 11, 2013

...Getting that high performance out of commercially available products will be another matter, of course. LED competitor Cree announced a 200-lumens-per-watt white LED in December, but as a single-die emitter. Cree also has shown 276 lumens-per-watt single-die white light in lab settings. Typically, we’ve seen lab ratings drop significantly as products are moved to market, as the irregularity of materials supply and manufacturing process combine with a still-complex channel to get cutting-edge LEDs installed and working properly.

As for the fluorescent tube replacement, Samsung announced a then-record-setting 140-lumens-per-watt tube in September, with plans to introduce it first in Japan. Based on energy savings over time, Samsung claimed a two-year payback on its tubes, with up to twice the efficiency of the fluorescents they’re replacing.

While Philips hasn't released any pricing or go-to-market specifics on its new tube LEDs, or TLEDs, the new 200-lumens-per-watt tubes are twice as efficient as its current models, and also produce a quality of light that surpasses others on the market, according to Jy Bhardwaj, senior vice president of research and development at Philips’ Lumileds LED division.

“The most important thing is, that when you generate that light, it’s got to be on the black body line,” Bhardwaj said, in explaining the highly subjective issue of lighting quality. The “black body line” describes the point at which various constituent colors -- in the case of Philips’ new tube, red, blue and green -- merge to form the most perfect white possible. Anywhere “off” the black body line, and the light has a color tint, he said.

...

http://www.greentechmedia.com/articles/read/philips-ups-led-ante-with-200-lumens-per-watt-tube?utm_source=Daily&utm_medium=Headline&utm_campaign=GTMDaily