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Paul,<br>
<br>
Oops: sorry:<br>
<br>
<div class="moz-cite-prefix">On 11/15/2012 12:03 AM, Paul Muthui
wrote:<br>
</div>
<blockquote
cite="mid:CAJAkcuTQdaQgmAvVaC_Qwqdm702atW4SKKZUzvQVX-nhM4kTjw@mail.gmail.com"
type="cite">Good Day All,<br>
<br>
I am looking into ways if heating my biogas digester... <br>
</blockquote>
<br>
<blockquote>"[...] There is a good deal of excellent information
about low-cost, found materials solar greenhouses..."<br>
</blockquote>
<br>
...available from GERES, as for example <a
href="http://www.geres.eu/en/technical-guides/101-a-manual-of-solar-greenhouse-construction-in-ladakh">here</a>,
"<span class="contentpagetitle">Solar greenhouses for the
trans-Himalayas : a construction m</span>anual".<br>
<br>
<br>
<br>
d.<br>
<div class="moz-signature">-- <br>
<div style="font:Georgia" ;=""><span style="font-size:110%;">David
William House<br>
</span>
<div style="padding-left:3em;font-size:80%;">"The Complete
Biogas Handbook" <code><a href="www.completebiogas.com">www.completebiogas.com</a></code><br>
<em>Vahid Biogas</em>, an alternative energy consultancy <code><a
href="www.vahidbiogas.com">www.vahidbiogas.com</a><br>
<br>
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<div style="padding-left:2em;">"Make no search for water.
But find thirst,<br>
And water from the very ground will burst."
<div style="padding-left:2em;font-size:80%;">(Rumi, a
Persian mystic poet, quoted in <em>Delight of Hearts</em>,
p. 77) <br>
<br>
<a class="moz-txt-link-freetext" href="http://bahai.us/">http://bahai.us/</a></div>
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