Re: Gore brainwashing world to ban the light bulb!

In article <4602ca9a$0$8753$ed2619ec@xxxxxxxxxxxxxxxxxxxxxxxxxx>,
"John Wallace" <johnwallace4@xxxxxxxxxxxxxxxx> wrote:

I put 1 kilowatt of electric power into a light, any kind of light,
tungsten, carbon arc, CFL, I get 1 kilowatt of heat in the room.
Efficiency 100%.

Isn't some of the energy used to make light? Or is it less than .5%
and you are rounding up?

I put gas or heating oil, at a rate equivalent to 1 kilowatts input
power, into a typical central heating boiler (you call them
"furnaces"?) and a good part of the power input goes up the chimney
(flue?). Efficiency maybe 40-70% depending on various factors (though
modern condensing boilers allegedly do rather better than 90%).

The electric light/heater is more efficient than gas or oil, on that
basis, because all the energy goes into heating the room rather than
some of it getting wasted up the chimney.

Why, then, is heating your house with electric heat more expensive than
heating it with a furnace that uses oil or gas? I thought it was due to
the inefficiency of the electric heater, but maybe it's due to the cost
of electricity compared to oil or gas.

Paul

--
Paul Anderson
OpenVMS Engineering
Hewlett-Packard Company
.

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