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high pressure air on mountaintops funneled down to the low pressure air in the valley.

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Posted by paulifatguts on June 27, 2007, 9:56 pm
 
Has anyone else heard about this guy?Last thing I read was that
backers ran to him with a hockey sock full of money.He wants to build
long downhill tubes about 20 feet diameter at the top reduced by maybe
a quarter at the bottom.Turbine at the bottom is supposed to spin like
a top.Four maybe five thousand feet lon
g at least.Thinks that a lot of unusable mountainsides ought to be
perfect.Posting about a Finn I know and next thing along comes
another .This one is Sahara bound.Suomi Jukka?


Posted by Anthony Matonak on June 27, 2007, 11:14 pm
 
paulifatguts wrote:

I have not heard of this guy. Posting a link with details might help.
As reported by you, the idea sounds bonkers.

Placing the turbine on top of the mountain would work. Ridges and
mountain passes are prime locations for wind turbines.

Anthony

Posted by Jeff on June 28, 2007, 12:18 am
 Anthony Matonak wrote:

I've never really understood solar chimneys. It seems that part of  the
solar chimney effect is due to air pressure differences due to
elevation. The efficiencies are fairly low.  At first, this seems to be
the reverse, how could that work?

   Maybe we should rename the group: alt.solar.whacko?

   Jeff




Posted by no spam on June 28, 2007, 12:44 pm
 
I think solar chimneys work on the fact that hot air rises and the air at
the top exit of the chimney is much cooler then the air at the bottom
intake.  The hotter the intake air the faster the rise.

IMO, solar chimneys could work BUT how well is the question.  Like all solar
items they only work in the daylight (for the most part).  They require a
lot of land area.   What effect will they have on the land under them isn't
known.  What effect pumping that much warm air upward would have on local
weather?  Can they produce enough power to make it worth while to build
them?  Those are just a few problems/questions.



Posted by no spam on June 28, 2007, 12:44 pm
 
I don't know what he's taking about either but it does raise some
interesting questions in my mine.  I know that tall buildings have problems
with the 'chimney effect' I wonder if you could get any useful and cost
effective energy by putting a large diameter pipe from a valley to a
mountain top.  Sort of a self supporting solar chimney.


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