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    G'day All,<br>
    <br>
    Larger absorption chillers are available, but I don't have
    performance figures. you can even get trigen, where you get
    electricity, cold and heat from the one unit.<br>
    <br>
    Happy digesting,<br>
    HOOROO<br>
    <br>
    <div class="moz-cite-prefix">On 9/10/2013 3:16 AM, David wrote:<br>
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      <br>
      Stephen,<br>
      <br>
      <br>
      <div class="moz-cite-prefix">On 10/8/2013 2:37 AM, Stephen
        Etheridge wrote:<br>
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          <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Why

              not use a gas fridge?</span></p>
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      <br>
      One's mileage may vary, but gas refrigerators (here in the US,
      such as the old Servels) have very poor efficiency (3%?), and
      generally speaking, where enough biogas is available, it makes
      better sense to make electricity, use the excess heat for the
      digester, and use electric-powered cooling.<br>
      <br>
      I don't know if larger cooling systems would experience
      significantly better efficiency: indeed, I don't know that I have
      ever seen mention of a larger system, which may provide something
      of an inferential answer. (By the way, Einstein held a patent on a
      gas-powered refrigeration system.)<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 moz-do-not-send="true"
                href="www.completebiogas.com">www.completebiogas.com</a></code><br>
            <em>Vahid Biogas</em>, an alternative energy consultancy <code><a
                moz-do-not-send="true" href="www.vahidbiogas.com">www.vahidbiogas.com</a><br>
              <br>
            </code></div>
          <code>
            <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 moz-do-not-send="true" class="moz-txt-link-freetext"
                  href="http://bahai.us/">http://bahai.us/</a></div>
            </div>
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      <pre wrap="">_______________________________________________
Digestion mailing list

to Send a Message to the list, use the email address
<a class="moz-txt-link-abbreviated" href="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</a>

to UNSUBSCRIBE or Change your List Settings use the web page
<a class="moz-txt-link-freetext" href="http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org</a>

for more information about digestion, see
Beginner's Guide to Biogas
<a class="moz-txt-link-freetext" href="http://www.adelaide.edu.au/biogas/">http://www.adelaide.edu.au/biogas/</a>
and the Biogas Wiki <a class="moz-txt-link-freetext" href="http://biogas.wikispaces.com/">http://biogas.wikispaces.com/</a>

</pre>
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