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Message from discussion Building a DIY solar heater for the garage
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D.M. Procida  
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 More options Nov 21 2011, 7:47 pm
Newsgroups: uk.d-i-y
From: real-not-anti-spam-addr...@apple-juice.co.uk (D.M. Procida)
Date: Tue, 22 Nov 2011 00:47:49 +0000
Local: Mon, Nov 21 2011 7:47 pm
Subject: Re: Building a DIY solar heater for the garage
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NT <meow2...@care2.com> wrote:
> On Nov 21, 5:23 pm, real-not-anti-spam-addr...@apple-juice.co.uk (D.M.
> Procida) wrote:
> > NT <meow2...@care2.com> wrote:
> > > > Basically, as soon as the angled mesh layer is the wrong side of
> > > > vertical, any warm air will be rising through it towards the glazing.

> > > The fan means air will be blown through the collector 100x as fast as
> > > it could ever rise, so not a problem.

> > I haven't understood how, in my scheme, mounting the mesh at an angle
> > will make any difference.

> Ah. I'll try and ascii it clearly.

> .   _______
> .         :|
> .   |    : |
> .   |   :  |
> .   |  :   |
> .   | :    |
> .   |:     |
> .   _______|

> Notice how the cloth goes from corner to corner. All the air goes
> through the cloth, not just past it.

OK, I get it - the top layer of mesh will be hottest, so we especially
want the air to travel through this top layer in particular (but through
the others too).

A concertina folded mesh might work too to achieve some of this:

air flow ---> /\/\/\/\/\/\/\ --->

but would be hard to make.

Thanks for the explanation.

Daniele


 
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