Someone asked me how long LED last. I read in a LinkedIn group discussion ("Hot Buttons In Lighting") that EPA is considering lowering the ENERGY STAR requirement for LED from 15,000–20,000 to 10,000 hours to lower cost, make LED and CFL equivalent, and make LED more affordable.

There are good reasons to lower the lifetime or raise it. But what do we tell people who ask? And what do you think EPA should do?

Tags: LED, lighting

Views: 755

Reply to This

Replies to This Discussion

Joesph-

while I agree with your post for the most part, an LED luminiare

is warm ( assuming the use of DC/LEDs ) they definitely do generate

heat but having said that I would concur there are secondary economic benefits

if using LED in downlighting cans- Many of these cans were designed for

 incandescent lighting and are ventilated for their role using incandescent lamps.

 

The excessive ventilation equates to unnecessary air infiltration when these old

cans are being used with a LED luminiares- many are or will be switched to LED use.There are

considerations about air infiltration/exfiltration issue- its a sizeable amount of waste.

 

As a picture is worth a thousand words I should probably of posted 2 thermal

images of a LED downlight (purpose built) vs the energy waste seen in

a thermal image of a standard incandescent down light. Its very revealing !

 

 

Really good points Joseph about the cooling energy savings and the benefit of a sealed can-light. I wonder what the equivalent leakage area of all the can lights in North America would be...


We published an article a while back in Home Energy by Bob Clear about his calculations of the heating load added by CFLs when replacing incandescent lights, compared to the electric energy savings. In very cold climates, you add more in heating load than you save in electricity by replacing incandescents with CFLs. But in the vast majority of climates, the electrical savings outweigh any added heat load. So LEDs must be a good choice even in predominantly heating climates as well as cooling ones.

Here's a new bulb for industrial applications...

http://ledsmagazine.com/press/36016

No IR or UV so your art won't fade

Joseph-

The glacial light product is only a so- so example of 2012 era SSL luminiares -

There are many competitors with better performance - two examples the

Glacial light is not a UL approved product & they only warranty their fine

product for 8 seasons - That's a weak warranty for a purportedly well

engineered lamp- but your highlighting LEDs magazine as a bona fide

source of SSL industry developements is helpful - it's chocked full of info.

 

One last observation - as you stated the lack of IR & UV radiation is not

present with LED luminiares true  - but why would anyone be displaying

art under industrial hi bay lighting- unless the artwork in question was

as big as an elephant - btw a bulb refers to a "lamp" with a bulbous shape

like an A19 or a B10 lamps . You plant "bulbs" you illuminate with lamps.

 

 

 

Ha Ha Ha! I like planting bulbs because, especially like iris, they double in a season and where you had 8 last year, now 16 are fighting for light and water! If this same thing were true with lamps, we could all plant and plan our retirements in 25 years! " "What have you got there Jonesy? " ..."Oh just a crop of cheapo Glacials next to my Crees... and my Philips will be coming up in a couple of weeks. I can't wait for that CRI of 79! WooHoo...thirty lamps to the square foot at $28 a pop, so to speak!" And I thank you, Dennis, for the lesson on the lingo. As I obviously grew up with the Edisons and we called soda "pop" and lamps "bulbs", it may take this geezer a while to adapt to the terms so I appreciate all the help I can get, and this little forum, like LEDs magazine, is helpful because of experts willing to share.

 

RSS

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Home Energy Magazine posted a discussion

Let's Talk Gender

It’s no secret that home performance is a male-dominated industry. Attend any industry conference…See More
1 hour ago
Mark Rogers added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Retrotec Blower Door Kit $1800

Retrotec Blower Door Kit complete with:DM2 Mark II digital manometer & automated fan…See More
1 hour ago
Maria Lacey replied to Jamie Kaye's discussion Flickering LED lights
"I think the tendency is to look at lamps (light bulbs) as though they're the same if they all…"
2 hours ago
tedkidd commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
"Absolutely agree Ben, "How much do I use, how much do others use, and what is my reasonable…"
2 hours ago
Profile IconTauran Ivall, Alex Burnham and Annika Brink joined Home Energy Pros
3 hours ago
David Eakin replied to Jamie Kaye's discussion Flickering LED lights
"I also thought that, but I tried to put a CFL in the A-19 outside fixture at my…"
4 hours ago
Ben Jacobs commented on Scott Mellberg's blog post Lessons from Energy Efficiency Advisors: Getting Homeowners Onboard with Home Performance
" I believe a major problem of government, of energy utilities, and home energy efficiency…"
5 hours ago
Jill Lindman posted an event

EEBA Houses That Work Education & Training at Johnson County Administration Building

August 22, 2014 from 8:30am to 4:30pm
About the SessionsIntro to Houses That Work: In this session participants learn how the many…See More
5 hours ago
Glen Gallo replied to Tom Conlon's discussion Whole House Fans - Love 'Em or Not?
"Title 24 requires whole house fans in zones 8-14 in the prescriptive path only. With many…"
6 hours ago
Jenn Saunders replied to Jenn Saunders's discussion iEnergyApp: Quickly generate professional reports for homeowners and get more contracts!
"Hey Tom, You are most welcome.  iEnergyApp is not free, but it is reasonable and pays for…"
6 hours ago
Jenn Saunders posted a photo

Automatically Generate Clean Simple Reports for Homeowners

Stop spending hours cropping and resizing images, formatting and reformatting a Word document to…
6 hours ago
Eric Sperline added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Beware ebay seller "supermomofps"

I bought a blower door system on Ebay from "supermomofps"  The item was never sent and…See More
7 hours ago

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service