Re: Price of Light Bulbs

In article <TItZf.9112$4L1.1251@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Robert
Gammon wrote in part:

In some households, replacing all the incandescent bulbs with CFs will
even cut the cooling costs in summer time (going from 3000 to 5000 or
more watts of heat from lamps to 300 to 500 watts of heat from CFs)

Heat output is only reduced by a factor of 4 and that I find to be a bit
on the optimistic side - not a factor of 10!
Oh yes, the light produced in a home mostly does become heat in the
home! Figure mostly 97 to 99.99 percent of electrical energy going into a
lightbulb becoming heat materializing in the home! Compact fluorescents
are only 20 to optimistically 25% efficient at producing light, although
with a spectrum favorable to human photopic vision and can be 4 times more
efficacious that way than incandescents (5-7% efficient and with a
somewhat less luminously-efficacious spectrum) - but that means 75-80%
efficient as heaters in addition to the light that does not make it out
the windows!

I surely see the good points of compact fluorescents, but I also see a
lot of resistance to them with a significant portion of that resistance
due to failure to meet some exaggerated claims!
I surely see that the truth and nothing more optimistic than the truth
is good enough to sell compact fluorescents! Customers that are not
disappointed will be repeat customers and pass on good word of mouth!

I surely think that sales of 23 watt compact fluorescents will increase
if they are advertised as meeting/exceeding 75 watt incandescent and 100
watt extended-life incandescent as opposed to being often found half a
step short of the 1710-or-so lumens of a "usual" 100 watt incandescent!

- Don Klipstein (don@xxxxxxxxx)
.

Relevant Pages

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