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Tue Jan 22, 2013, 10:55 PM

LEDs Emerge as a Popular ‘Green’ Lighting

http://www.nytimes.com/2013/01/22/business/leds-emerge-as-a-popular-green-lighting.html?src=me&ref=general
LEDs Emerge as a Popular ‘Green’ Lighting

By DIANE CARDWELL
Published: January 21, 2013

The lighting industry has finally come up with an energy-efficient replacement for the standard incandescent bulb that people actually seem to like: the LED bulb.

Although priced at around 20 times more than the old-fashioned incandescents, bulbs based on LEDs, or light-emitting diodes, last much longer and use far less electricity, a saving that homeowners are beginning to recognize. Prices for the bulbs are falling steadily as retailers like Home Depot and Lowe’s sell them aggressively and manufacturers improve the technology.

And because the light in LED bulbs comes from chips, companies have been able to develop software applications that let users control the bulbs, even change the color of the light, with tablets and smartphones. Apple sells a three-pack of such bulbs, made by Philips, with the hardware to operate them for about $200.

“You’re seeing all of your growth in the LED category,” said Brad Paulsen, a Home Depot merchant. “We absolutely expect LED technology in four or five years to be the most popular lighting technology that’s out there.”

...

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Arrow 23 replies Author Time Post
Reply LEDs Emerge as a Popular ‘Green’ Lighting (Original post)
OKIsItJustMe Jan 2013 OP
rhett o rick Jan 2013 #1
OKIsItJustMe Jan 2013 #3
rhett o rick Jan 2013 #13
Shankapotomus Jan 2013 #16
Bigbluebrush Jan 2013 #4
Shankapotomus Jan 2013 #15
tridim Jan 2013 #2
Bigbluebrush Jan 2013 #5
NoOneMan Jan 2013 #6
OKIsItJustMe Jan 2013 #7
NoOneMan Jan 2013 #8
NYC_SKP Jan 2013 #9
bluesbassman Jan 2013 #10
GliderGuider Jan 2013 #17
GliderGuider Jan 2013 #19
NoOneMan Jan 2013 #20
tridim Jan 2013 #12
GliderGuider Jan 2013 #18
tridim Jan 2013 #21
GliderGuider Jan 2013 #22
diane in sf Jan 2013 #11
Shankapotomus Jan 2013 #14
Chelsey Parker Mar 2013 #23

Response to OKIsItJustMe (Original post)

Tue Jan 22, 2013, 10:57 PM

1. I have seen them. Looks like they have cooling fins.

Wonder if they get very hot.

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Response to rhett o rick (Reply #1)

Tue Jan 22, 2013, 11:06 PM

3. No, they don't get very hot

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Response to OKIsItJustMe (Reply #3)

Wed Jan 23, 2013, 09:00 AM

13. Thanks for the link. You are right that they dont get hot but need cooling fins to transfer the heat

away.

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Response to rhett o rick (Reply #1)

Tue Jan 22, 2013, 11:08 PM

4. They don't get hot, but...

LEDs are very sensitive to heat. It shortens their life from almost unlimited to a year or two.

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Response to OKIsItJustMe (Original post)

Tue Jan 22, 2013, 11:01 PM

2. Interested, but waiting another year to start buying them.

I'm sick of fluorescent light.

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Response to tridim (Reply #2)

Tue Jan 22, 2013, 11:15 PM

5. I agree. Fluorescents are unnatural.

I like LEDs but so many of them have a slightly blue cast to them. Since they can theoretically be combined to make most any color, I don't fully understand why the color isn't correct, or at least, adjustable.

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Response to OKIsItJustMe (Original post)

Tue Jan 22, 2013, 11:49 PM

6. Still amazingly expensive

 

It'd cost a fortune to replace my 400W HPS. You know how much oil I'd have to sell to make that kind of dough?

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Response to OKIsItJustMe (Reply #7)

Wed Jan 23, 2013, 12:19 AM

8. How many is a handful?

 



I'd be interested in them if the numbers made sense....55000 lumens in this:
http://www.htgsupply.com/Product-AgroMax-400-watt-High-Pressure-Sodium-Bulb.asp

Not sure how many I'd need. Ill have to do the math. Might not even be worth for as little as I fire up my ballast anymore

I think this is more comparable:
http://www.htgsupply.com/Product-Gen3-UFO-LED-Grow-Light.asp

And yes, I understand that electricity generated grow lights of any efficiency pales in comparison to using the sun.

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Response to NoOneMan (Reply #8)

Wed Jan 23, 2013, 03:38 AM

9. For what on this planet do you need 55,000 fucking lumens?

The normal person can use not more than 5,000 lumens distributed evenly over 144 square feet.

What the hell are you needing 55,000 lumens for, a warehouse?

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Response to NYC_SKP (Reply #9)

Wed Jan 23, 2013, 04:44 AM

10. About 5 or 6 nice healthy plants would be my guess.

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Response to bluesbassman (Reply #10)

Wed Jan 23, 2013, 12:09 PM

17. Yeah, that would be about right.

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Response to NoOneMan (Reply #8)

Wed Jan 23, 2013, 12:13 PM

19. I asked a guy about the UFOs once.

When he stopped laughing he said, "Not yet grasshopper, not yet."

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Response to GliderGuider (Reply #19)

Wed Jan 23, 2013, 12:22 PM

20. Yeah, I haven't looked at them for over a year

 

I was wondering if we've made any progress in the meantime in terms of photons per watt and cost. Some people swear by them but I am perfectly happy with my archaic HPS.

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Response to NoOneMan (Reply #6)

Wed Jan 23, 2013, 08:44 AM

12. You should be using Ceramic Metal Halide anyway.

Both HPS and CMH are more efficient than current LED's.

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Response to tridim (Reply #12)

Wed Jan 23, 2013, 12:10 PM

18. I understood CMH was mostly used during flowering?

More blue than the leaves can use, or something.

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Response to GliderGuider (Reply #18)

Wed Jan 23, 2013, 02:00 PM

21. CMH improves both veg and flower over HPS or MH/HPS.

It's pretty shocking how well they work.

And as a bonus plants look absolutely amazing under white CMH light!

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Response to tridim (Reply #21)

Wed Jan 23, 2013, 02:04 PM

22. Cool! Thanks, I'll keep them in mind.

If I should ever need such lights, that is...

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Response to OKIsItJustMe (Original post)

Wed Jan 23, 2013, 06:52 AM

11. You can buy them at Lowes (a blue company) for around $10.00

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Response to OKIsItJustMe (Original post)

Wed Jan 23, 2013, 09:23 AM

14. Great news!

Considering all the negativity surrounding LED lighting only a few years ago.

And they are only going to get better. Here is one innovative design that attempts to remove the necessity for a heat sink:

http://www.kickstarter.com/projects/619878070/nanolight-the-worlds-most-energy-efficient-lightbu?ref=live

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