From: Richard Archer <permaculture@juggernaut.com.au>
To: permaculture <permaculture@lists.ibiblio.org>
Subject: Re: [permaculture] Site analysis tools
Date: Wed, 13 Oct 2010 16:17:45 +1100
At 6:07 AM +0100 13/10/10, wenshidi@yahoo.co.uk wrote:
>I have been asked to put together a site analysis and I want to make
>it as accurate and informative as possible. I am using transparencies
>to to display the various flow patters, but some are more difficult to
>establish than others. Winter and summer sunlight for example. Is
>there some equation based on my lat and long that will give me
>accurate figures for this?
It's important to do the obstacle survey especially if
your site is hilly or treed. It makes a big difference
to the optimum orientation of sun-facing glass for
passive solar homes and greenhouses.