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Himanshugupta
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Re: LED T8s still require improvement
Himanshugupta   4/28/2011 1:32:00 PM
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Thanks Mike for your comments. I am curious about LED future. Everywhere i read, there is so much talk about LED being the future replacement of bulbs and flourescent tubes. And that future is predicted in next 2-3 years. Most of todays LED growth is due to LCD backlighting as manufacturers can cover the additional costs of LED. But if the LED lighting solutions are comparatively expensive than the currently available lighting solution then there will not be much demand. Right?

jbond
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re:
jbond   4/28/2011 12:15:04 PM
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I think the largest issue facing the LED change over is cost. Until manufacturers can come up with a better technology to reduce the manufacturing costs, consumers are going to pay very steep prices. If prices don't fall considerably, many consumers that took on the added cost of conversion to LED's risk losing their investment if the products aren't mass produced. I do know there are a few companies that are looking at organic substances that can produce the equivalent output of LED's at a fraction of the cost. Of course this is in R&D and could take years to even take hold on the market.

bolaji.ojo
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Re: LED T8s still require improvement
bolaji.ojo   4/28/2011 10:19:00 AM
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Excellent. The additional industry perspective is good for understanding the dynamics of the continuing evolution of the lighting market. I'll check out Jim Brodrick's blog.

BulbsBoss
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Stock Keeper
Re: LED T8s still require improvement
BulbsBoss   4/28/2011 9:53:16 AM
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Here's the link to Jim Brodrick's posts.  The T8 papers were done in 2010 so you'll need to scroll down the page in click on 2010 Archives.  I urge those interested in the LED category (whether you're in the industry or and end user) to subscribe to Jim's weekly post - they're short and very informative!

http://www1.eere.energy.gov/buildings/ssl/postings.html

 

bolaji.ojo
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Blogger
Re: LED T8s still require improvement
bolaji.ojo   4/28/2011 9:46:47 AM
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Mike, Thanks for the additional insight. Do you have the web link for Jim Brodrick for EBN readers? Thank you.

BulbsBoss
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Stock Keeper
LED T8s still require improvement
BulbsBoss   4/28/2011 8:41:59 AM
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At Bulbs.com we provide replacement lighting to thousands of commercial clients throughout the U.S. and get plenty of feedback from savvy facilities managers.

When compared to fluorescent T8 their LED counterparts do have quite a performance gap.  A perfect example is the Philips Energy Advantage T8 that lasts 40,000 hours (12 hour cycle), it costs around $4 and delivers 3,000 lumens.  In comparison, many of the LED T8s that are currently available are rated to last 50,000 hours but as the author reports, cost over $50 each.  By the way, its not uncomon for the LED T8 to deliver only a third of the light but still use more than half of the energy of the fluorescent. 

If you're interested in seeking some very objective assessment check out the weekly Postings of Jim Brodrick, lighting program manager for the U.S. Department of Energy.  His group has done several comparitive tests in this category.

Mike Connors, Bulbs.com CEO

prabhakar_deosthali
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Supply Network Guru
Why just emulate the fluorescent tube? think different
prabhakar_deosthali   4/28/2011 6:44:18 AM
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I do not undetstand why the LED lighting has to emulate the fluorescent tube. The fluorescent tube has many limitations - size is the one, location in  a room is another. On the other hand with LEDs the interior designers can really work out some innovative lighting ideas where the same lumens can de distributed across the room or the sitting hall area to give the same lighting effect , rather than that one fluoresecent tube hanging over the wall some 7 feet high .  Can the LED lighting systems designers think something out of box to make such lighting more popular and more state of art? The cost will become immaterial in that case and the long life of LEDS will pay back for it.

anandvy
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Supply Network Guru
Re : LED Lighting
anandvy   4/27/2011 11:45:58 PM
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"fluorescent tubes sell for around $2, and have a more than adequate quality of light, the real challenge is the T8's sticker price, which is 30 times more"

Malcolm,

  Do you think this cost can be brought down by mass production of T8's or do we need to wait for new LED manufacturing techonology to push the prices down ?




maou_villaflores
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re:
maou_villaflores   4/27/2011 10:49:07 PM
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LED production is really expensive. LED tube R&D should focus on how to lower the cost.

Himanshugupta
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Supply Network Guru
re:
Himanshugupta   4/27/2011 1:43:20 PM
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I am not sure whether this is typical ratio of an LED tube price and flourescent tube price. But if this is the typical price difference and we get lower lumen per watt spent then why is there so much promotion about the advantages of LED over conventional tubes? I know that the longer life time is one good thing about the LED but if the costs of LEDs are so high then it will be difficult to buy them at the first place, especially in poor and developing countries.

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