I went to my local Wal-Mart today and one of the things I had to get
was light bulbs. It was not a pleasant surprise. The sticker shock of
fluorescents that nobody wants. I thought that wasn't supposed to happen
for a couple of years yet! I thought. I was fuming and thinking about
this post so much that I even left behind a bag o' grub!
So
let's talk about it a minute shall we. No this isn't going to be the
usual gripe piece. Let's get into the real science about that fool light
bulb law. This law has as a basis that the ordinary incandescent light
bulb wastes energy. So let's discuss some elementary science briefly
some of which some of you may already know.
First of
all it is commonly accepted scientific fact that energy can neither be
created nor destroyed true enough. Another lesser known fact is that all
types of energy, no matter how, what, when or where always ultimately
ends up as heat energy from combustion, friction and even noise. From
this it can be stated that heat energy is one of the few things than can
and is always produced with 100% efficiency! This is not to be
confused with the concept of moving heat from one place to another
which is a different matter entirely.
Now the
incandescent light bulb more specifically. It is indeed a trait of the
incandescent light bulb to produce more heat than light which is a
result of having to heat a filament to such a high temperature before
light emission occurs. It is this heat that some numbers person has
arbitrarily labeled as "waste" and keeping in mind that heat production
is directly proportional to the movement and quantity of electric
current. Evidently this person hasn't considered the whole picture or
is from Hawaii or some other perpetually warm place.
So
now let's look at the rest of the picture. This gets really simple.
Most light bulbs are found in buildings which of course must be heated
in the winter time. It can indeed be stated with all gravity and
truthfulness that an incandescent light bulb operating in a room that
needs heating is without doubt operating at 100% EFFICIENCY!!!!
Consider
the other most common form a heating in a building. These are usually
heat pumps found in your yard. These not only produce heat but must
also move it into a building. They have efficiency losses during their
operation which can be described as heat carried away in the winter
winds. When you remove the incandescent light bulb source of heat in
such a building it is only going to increase the load on the heat pump.
Nothing is gained.
This argument does get more
difficult in the summer time but they invented daylight savings time
didn't they. Problem solved. The only real way that energy can be saved
with lighting is to reduce the use of daytime lighting in the
summertime. If you really want to save energy then dry areas of the
country should switch to evaporative cooling in the summertime instead
of using a heat pump air conditioner. The savings are significant and
more significant than a light bulb could ever be. It is in my case $5
verses about $100 a month not to forget that a new evaporative cooler
usually costs about $500 verses more than $2000 for a heat pump. It's a
no brainer.