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CFL vs. Incandescent Debate - RF Cafe Forums
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Below are all of the forum threads, including all
the responses to the original posts.
Post subject: CFL vs. Incandescent
Posted: Thu Apr 26, 2007 11:56 am
Joined: Sun Aug 03,
2003 2:02 pm
Since my recent "Kirt's
Cogitations" article has received a couple
responses, I thought it might make a good topic
for the forum. If you have not yet read it,
please look here, then be sure to return.
Here are the two e-mails:
One thing to consider
is where does the energy "wasted" go in an
Edison bulb? The answer is usually In my house.
Where I live we heat the house 7 to 8 months a
year. So the efficiency calculation is really
electric heat vs the running my furnace a little
harder. In fact in weather like we are having
now in Minnesota,( mid 50's F), I suspect that
it is more efficient to run a few incandescent
lamps, to heat the house, than to run my furnace
designed for -20F.
The CFL's, really
make the grade in the summer time when we need
--- My Response:
I’ve had the same
thoughts about how in the cold weather that the
“wasted” energy from incandescents is not really
wasted at all. It would make a good study to see
where the break-even point is in cold climates
between the heat added by incandescents (and not
needed to be supplied by a heating system),
versus the energy needed by the AC to remove the
excess heat during the cooling season.
Since I have received another response to the
CFL article, I think it might be a good
candidate for the RF Cafe forum. I’ll use your
letter and the other to prime the pump on this
one. I’ll just use your initials for
identification. Thanks for the feedback.
your CFL article today and I wanted to comment
about how you don't like the "color" of the
CFLs. One thing a lot of people don't consider
is that CFLs come in a lot of different color
temperatures. Unfortunately, they are often
mislabeled as "brightness" levels. You would
assume that brightness has something to do with
Watts. However, CFL color temperatures range
from 2700 to 6500 K. The lower temperatures are
yellower and the higher more blue. Make sure the
color temperature matches your tastes, not just
After reading this
fastcompany article about Walmart we exchanged
the bulbs in our entire house. My wife likes the
5000K variety which look very "blue". What I
have observed is that after a short time (weeks)
the blue has faded so they look more "white"
now. What is nice about the 5000K bulbs is that
when they are on during the day you can't tell
where the daylight ends and the artificial light
--- My response:
Thanks for the tip
about the color temperature. I just looked at
packages for 100 W and 60 W CFLs from two
different manufacturers and neither has the
color temperature listed; these are no-name
manufacturers (as opposed to ones like GE).
Those, of course, are the low-cost models (~$3
each) that Lowes, Wal-Mart, etc., sell. The GE,
100 W models were selling for about $8 each, and
they had a color temperature of somewhere around
5000 K marked on them, which is probably more in
the blue-white range.
It is a shame that
a lot of people are probably being turned off to
the CFLs because in the process of making
relatively cheap products available, they are
giving the impression that if you choose to use
CFLs, you have to settle for inferior quality
Maybe I will go back and try
buying three of the GE bulbs for my office light
fixture to see how much improvement it makes. It
will be only in the name of scientific
experimentation that I will shell out twice as
much for the light bulbs as I did for the
fixture they are to used in. Hmmm……. maybe I can
deduct the cost???
comments are encouraged.
- Kirt Blattenberger
RF Cafe Progenitor & Webmaster