Re: Anyone moved to LED Lighting?

[John Perry <jpnews@xxxxxxxxxxxxxxxxxxx>]

I do not know if the LEDS are phosphorescent.  What I do know is that
the 12 SMD devices are no bright that they are blinding when looked at
from 1-2 metres away.

GU10 Halogens get so hot, they cannot be touched for minutes after
being switched off.  GU10 CFLs also get quite warm; GU10 LEDs that
give out similar light to CFLs are significantly cooler.

On Thu, 19 Nov 2009 21:00:42 -0500, "Josepi" <JRM@xxxxxxxxxxxx> wrote:

>Halogen are more efficient than tungsten incandescents, also, but the bulbs
>still get much hotter.
>
>Bad argument and evaluation for efficiency. CFLS have a much larger surface
>area. (eg. fluorescent tubes stay much cooler despite higher wattages). LEDs
>do not get that warm as they don't produce enough light to bother with used
>singly. If I used a 15 watt incandescent it wouldn't get that warm either
>with heat sinc on it.
>
>Are your units the phosporescent type of LED units?
>
>"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
>
--
John Perry

http://www.redoak.co.uk