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From: Lynn McGuire <lynnmcguire5@gmail.com>
Newsgroups: rec.arts.sf.written
Subject: Re: The insane progress nobody is talking about
Date: Mon, 24 Jun 2024 13:55:42 -0500
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On 6/22/2024 11:50 AM, Paul S Person wrote:
> On Fri, 21 Jun 2024 17:22:21 -0500, Lynn McGuire
> <lynnmcguire5@gmail.com> wrote:
> 
> <snippo>
> 
>> I am having to replace my 100 watt equivalent 15 watt actual LED bulbs
>> in my office building every three years or so.   I have about a hundred
>> light fixtures in can lights, both inside and outside (mostly inside).
>> I use the lights about 50% of the time.
>>
>> Evidently, the LED bulbs in the can lights is causing the LED electronic
>> circuit board to overheat since the bulb is upside down, base up.  Many
>> of the LED bulbs that fail have discoloration and cracks in the base.
>>
>> So 50% X three years X 8760 hours / year = a life of 13,140 hours per
>> LED bulb.  My previous usage of incandescent bulbs was a life of about a
>> year at most.  Plus more heat for the air conditioning and electric bill
>> for the building.
> 
> If it saves enough money to pay for itself (including, to be sure, the
> labor costs for replacing them), then using them makes business sense.
> Even if the asserted life is hooey.
> 
> Perhaps there are can fixtures designed to use LEDs.
> 
>> I have some 150 watt (70 bulbs) and 200 watt (90 bulbs) LED light
>> fixtures inside and outside my warehouse, about 20 of them.  I have yet
>> to have any failures on these.  They do have a huge heat sink on them as
>> the fixture weighs about 13 lbs.
>>     https://www.amazon.com/gp/product/B077ZNJRFS/
> 
> Currently unavailable -- but others are shown further down the page.
> 
> The size was interesting -- 17 x 15.7 x 2.4 inches
> (length/width/height). That's a lot of light in a small package!

They light the inside and outside of my 3,750 ft2 warehouse very well.

And they turn on instantly whereas the old metal halide lights took ten 
minutes to turn on.  Plus the old metal halide lights were 1,000 watts 
each which was torture in the summer.  Nice in the winter though.

Lynn