Re: Anyone moved to LED Lighting?

["Josepi" <JRM@xxxxxxxxxxxx>]

While I can find the original private website where an energy miser person
did his own testing a few years ago, here are some interesting websites
disclosing parameters. The original page I refer to discussed why white LEDs
were not so efficient as the natural coloured ones but, this was based on
old technology being a few years ago.

Wikipedia discusses some of the improvements increasing LED efficiency
http://en.wikipedia.org/wiki/Light-emitting_diode

This is an interesting website promoting LED lighting based on it's long
term economy and demonstrates that LEDs are only close to CFLs and much less
than Sodium and other yukky lighting methods
http://www.ecoledlighting.com/docs/LEDEfficiencyComparison.pdf

Here is another website that discusses why LEDs are not what the "EPA" tests
show for MPG.
http://msklighting.com/wordpress/2009/08/26/led-lighting-about-efficiency/

With a little research of your own I would be sure you could find much more
data and how it is accomplished to promote their products.


"John Perry" <jpnews@xxxxxxxxxxxxxxxxxxx> wrote in message
news:lqvag59p65t7kpefgm3co77uotsvv3g8bt@xxxxxxxxxx
> On Tue, 17 Nov 2009 16:42:50 -0500, "Josepi" <JRM@xxxxxxxxxxxx> wrote:
>
> LOL, maybe I should have used 16-LED etc.  I have in total 116 GU10
> fixtures.
>
> I have to disagree the "testing"; can you cite where the results are?
>
> The fact is incandescent are too hot to touch; CFLs get very warm and
> LEDs are hardly warm to the touch.  So relying on the "Law of
> conservation of energy" LEDs should be more efficient.
>
> I have certainly noticed that LEDS are much better now than they were
> 2 years ago; your statement may well have been true then.
>
> I'll probably put some photos up on my site later, but not until our
> new heat pump based ventilation and heat recovery system gets
> installed next week.
>
>
>>Am I correct in assuming you have over 200 fixtures for these LED lights
>>or
>>is there some other format used?
>>
>>
>>Testing has shown white LEDs to be less efficient than CFLs and hardly
>>much
>>more efficient than incandescent lighting. Apparently there was a
>>technology
>>change a few years back that I am not familair with. I believe these use a
>>phophourescent screen technology to re-emit the light in the colour
>>desired.
>>
>>
>>
>>"John Perry" <jpnews@xxxxxxxxxxxxxxxxxxx> wrote in message
>>news:ip26g5pbol5n8ackjlh2ta8v360p28tk3n@xxxxxxxxxx
>>>I have tried a range of GU 10 LEDs.
>>>
>>> 16 LED units using 2W, and totally inadequate.
>>>
>>> 48 LED units imported from China; they had a greenish hue, but
>>> inadequate brightness and too green/blue.
>>>
>>> 60 LED warm lights that give the right colour balance, but not really
>>> bright enough. No failures in 2 years, we use some for background
>>> lighting.
>>>
>>> 60 LED daylight units that are too white/bright. No failures in 2
>>> years.
>>>
>>> 78 LED warm units, these are easily bright enough and equivalent to
>>> 20W halogens.  We use around 40 of these.
>>>
>>> 78 LED daylight units, again easily bright enough, but too white and
>>> un-natural.
>>>
>>> 12 LED SMD warm; these are excellent, very bright and we use about 40
>>> of these.  These are slightly brighter and whiter than the 78 LED warm
>>> units.
>>>
>>> 12 LED SMD daylight; these are excellent, very bright and we use them
>>> in the kitchen.
>>>
>>> 16 LED colour changing; we use these at Christmas time for fun.
>>>
>>> No interference with X-10 so far, but I think they are killing the
>>> signal between my wireless weather station and external sensors.
>>>
>>> Sorry for the delay in replying.
>>>
>>> The units barely get warm, and use less energy than CFLs as the CFLs
>>> get hot.
>>>
>>> All GU10s are in fire cowls, but covered with fibreglass with no
>>> cut-outs as required for halogen.  If 50W halogen units are put in our
>>> housings, we would have a serious fire risk.
>>>
>>>
>>> On Sat, 31 Oct 2009 00:26:07 -0400, "Josepi" <JRM@xxxxxxxxxxxx> wrote:
>>>
>>>>Do you have any efficiency specs onthese unit you are using? Some
>>>>previous
>>>>test found white LEDS to be much less efficient than CFLs. IN fact
>>>>people
>>>>found white LEDS to be less inefficient than incandescent bulbs.
>>>>
>>>> I understand some new technologies have changed that in the last few
>>>> years.
>>>>I would be interested in what technology you are using and what the
>>>>colour,
>>>>brightness and efficiencies are if you are aware. You seem happy with
>>>>them
>>>>so they must be half decent.
>>>>
>>>>
>>>>"John Perry" <jpnews@xxxxxxxxxxxxxxxxxxx> wrote in message
>>>>news:on4me5plinjq3h212fa2gq9eebd5gk5pt3@xxxxxxxxxx
>>>>> Reason is, no cost saving to control them.  I have tries CFLs, but
>>>>> they get too warm; the LEDs run virtually cold.
>>>>
>>>>> On Mon, 5 Oct 2009 12:20:36 -0400, "Robert L Bass"
>>>>> <Sales@xxxxxxxxxxxxxxxxxxxxx> wrote:
>>>>>>From the gentleman's first post: "I'm very impressed with the results
>>>>>>and
>>>>>>have
>>>>>>decided not to use X-10 to control them."
>>>>>
>>>>>>"Robert Green" wrote:
>>>>>>> Sure.  Have you tried them with X-10?...
>>>>>>
>>>>
>>> --
>>> John Perry
>>
> --
> John Perry
>
> http://www.redoak.co.uk