I never had anything good to say about crappy LED Retrofits....

Here is why-- I can speak about 3 instances where manufacturers of LED retrofits

have had  faulty stuff recalled - the latest Lighting Science groups  offerings- the Ecosmart LED

cheapies sold at Home depot - have/ ( continue to) smoke, overheat, ignite on some occasions

Bad for owners- SSL quality zealots have to restrain themselves from saying - SEE I TOLD YA

 

 I have been railing against these cheap products  with their inferior components for

5 years + now - I am aware of the negative damage done by crap products  - I go out

of my way to qualify my LED advocacy with cautions of BUY ONLY SSL with good quality

standards- regardless things like this will continue the SSL business as it find its legs.

 

 Sad but true - It SSL ( buyers remorse) would happen less with more pre purchase scrutiny

that comes from asking key questions- Which chip is in 'em whats the E caps  MTBF

or asking questions about validating sprectral output claims - if those questions can't be

answered adequetely I'd shop elseware-

 

Better - skip LEDs using 120 VaC mains-I favor using LEDs on a Power over the

ethernet+ although standard (common LED lights) will be good-

I really want  to skip ahead to the "good stuff" the 2020 era

OLETs using POE -that would really be A-Ok.

 

 Until the constructs are changed folks are going to need to be discriminating buyers

hopefully going in with open eyes, using unbaised performance data and knowing that some

of the crappiest LEDs are typically the ones at chest level at big box purveyors.

 

Views: 101

Reply to This

Replies to This Discussion

Perhaps some day I should post my pictures of a garbage can full of CFL's.  Both CFL's and LED's have electrolytic caps in them... and the lowest cost items are a problem.  But for CFL's you normally don't see the power supplies in them fail --- only because the mercury in the bulb is depleted first.   But the CFL electronics do fail -- I have some dead CFL's I collected for show and tell.

More common problem on the LED's is that the power supplies just fail and they stop working.  I have a small collection of those.

It is probably also worth noting that for both devices - the claims of long life... is a little bit of a stretch.  You've got to read the labels AND what a lifetime is defined as.

Most bulbs are spec'ed at about 3.5 hours day.  One turn on, one turn off.  For CFL's  the turn off light as you leave the room can shorten its life by 20% or more.   LED's generally don't see the same on/off impact.  HOWEVER,  some do experience a droop somewhat like CFL's.  AND even though much of the marketing claims say 20,000 hour life - that really means the bulbs half life is 20,000 hours.  (Worst simplistic case it means half the bulbs fail almost immediately and the other half make it the full 20,000 hours.)

I also have some scary incandescent lighbulbs.  Like the ones that overheat --- resulting in a bonding failure between the glass and the base.  So when you unscrew the light the base is still in the socket.

The early generation of LED's certainly didn't hold up to my expectations.  The newer generations of bulbs are getting pretty good.  BUT the ROI for a bulb switch is still marginal.  It only works if you use dimmers (they kill the CFL's), you are trying to avoid mercury,  you don't want the heat the CFL's produce,  and you still are willing to be an early adopter.

OLET's using POE will not be very energy efficient.  Too much loss in power between the supply and the light.  Wire size is simply too small.  You can calculate out the loss -- it is much higher than you might expect.   Plus the ethernet power sources are generally not optimized for lighting use.

RSS

Photos

Loading…
  • Add Photos
  • View All

Latest Activity

karren shaw commented on miguel pace's blog post The features and benefits of Axial Flow Fans
"Axial flow FRP Fans from parag incorporate latest technique in its manufacturing process as Parag…"
1 hour ago
Daniel Cullen replied to Rodney Fox's discussion Radon: Truth vs. Myth
"As you point out Caoimhin, radon is not the health issue...it's the progeny, yes? Mr.…"
3 hours ago
Daniel Cullen replied to Rodney Fox's discussion Radon: Truth vs. Myth
"Is all Alpha radiation equal insofar as it's capacity to damage human tissue?  Does the…"
3 hours ago
Earth Advantage posted an event
Thumbnail

CakeSystems™ Software Course at Webinar

March 4, 2016 from 9am to 11am
CakeSystems Software training is offered as a self-paced online course of 3-4 hours followed by a…See More
11 hours ago
Anthony Adams posted a blog post

Bonus room attic walls heat load

Hi Everyone...First of all I am 59yr old retired Federal employee. I took HVAC in a trade school 30…See More
14 hours ago
Tom White's video was featured

Multifamily Building Energy Innovation- TrueFlow Capture Box

Video explaining the new tool to help reduce the energy costs of effective ventilation in multifamily buildings.
18 hours ago
Alfie Davis posted a blog post

Utility of a Hardwood Staircase

Everything needs a makeover after a certain time. Your home is one of them.  Sometimes, you…See More
21 hours ago
miguel pace shared a profile on Facebook
yesterday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service