On Apr 7, 1:02 am, "David M. Palmer" <dmpal...@[EMAIL PROTECTED]
> wrote:
> In article
> <6ddd4c3c-5dc1-4a70-b34f-964df44d5...@[EMAIL PROTECTED]
>,
>
> Charles Talleyrand <kitplan...@[EMAIL PROTECTED]
> wrote:
> > Lets suppose I've got *lots* of energy to spend, and I only want to
> > heat just *one* city. I'd like to raise the ambient temperature 20
> > degrees above the surrounding area. YOU ARE LIMITED TO CURRENT
> > TECHNOLOGY, but have a VERY VERY LARGE BUDGET. What might be the best
> > way to do it? And about-sort-of how much energy might this take?
>
> Start by doming the city. (Even cir***vallation would help.)
> Otherwise you will get huge convection that will take all your heat
> away and cause chilling winds.
>
> The air is 0.3% less dense than the cold air (assuming that is 20 F
> degrees--double that for 20 C degrees. Thus it will want to accelerate
> upwards at 3e-3g = 3 cm/s^2 = (mach 1)/3 hours. It won't be able to do
> that because it has to push aside air above it and draw in the
> surrounding air underneath it. But it will, indeed, rise, pu****ng
> aside air above it and drawing the surrounding air underneath it.
>
> It may be easier just to heat what you want heated. IR lamps to make
> everybody feel toasty warm, and heated sidewalks to slough off the snow
> and ice. Incendiary devices for the buildings if that's why you want
> to heat the city.
I don't think one can build a dome over even a medium city with
current technology.
I don't want to heat just a few things. I want overall warmth. The
goal is for people to go outside and feel less cold, while at the same
time have all the plants, animals, and lawns feel warmer. Suppose we
have LOTS of energy; how do we achieve that goal?
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