I was wondering about the efficiency aspect of it. Our neighbor the truck
driver protested that although fuel prices might triple, still, says he, trucks
are more efficient than trains. I dug a bit. In order to pull (level grade)
100 loaded boxcars, it takes four engines the size of his truck engine.
Doesn't sound like trucks are more efficient to me! When I quizzed him, he said he
meant they were more efficient in that you got your load to its destination
more quickly, two days instead of three.
From WarrenSmith AT PalmettoBuilders.net Thu Jun 22 19:13:37 2006Return-Path: <WarrenSmith AT PalmettoBuilders.net>
I was wondering about the efficiency aspect of it. Our=20
neighbor the truck=20
driver protested that although fuel prices might triple,=20
still, says he, trucks=20
are more efficient than trains. I dug a bit. In order to=20
pull (level grade)=20
100 loaded boxcars, it takes four engines the size of his=20
truck engine. =20
Doesn't sound like trucks are more efficient to me! When I=20
quizzed him, he said he=20
meant they were more efficient in that you got your load to=20
its destination=20
more quickly, two days instead of three.
So the figures above are based on potential BTU's? It=20
surpises me a bit but=20
it's true a lot more of the heat from the flame heats the air=20
than does the=20
heat from the electric coil when the pot is matched to the eye.
But a couple of things: Electricity is more efficient once=20
it is delivered=20
to you, but is it as efficient overall? I don't know, I'm=20
asking. Using coal=20
or natural gas or fuel oil to generate electricity is very=20
inefficient, much=20
less efficient than making propane or mining natural gas. =20
Taking that into=20
consideration, is it still more efficient?
That's got me a bit puzzled. My propane oven isn't vented. =20
It premixes the=20
gas and air before it gets to the oven and combusts it=20
electronically (the=20
oven, alas, doesn't work when the electricity is off). By=20
products other than=20
water and C02 are negligible. I'm not sure how it works that=20
gas and air keep=20
going into the oven but hot air is not vented, but that's the case.
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