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 cooling.
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.
I read 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 begins.
http://www.fastcompany.com/magazine/108 ... bulbs.html
--- 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 lighting.
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???
Your comments are encouraged.
- Kirt Blattenberger
RF Cafe Progenitor & Webmaster