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    The concept of using a compost pile to heat water is often
    attributed to Jean Pain of Switzerland:<br>
    <a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Jean_Pain">https://en.wikipedia.org/wiki/Jean_Pain</a><br>
    <a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Compost_heater">https://en.wikipedia.org/wiki/Compost_heater</a><br>
    <br>
    I think "hot" composting has been known about for a long time too.
    Which of course doesn't exclude independent rediscovery.<br>
    <br>
    Robert<br>
    <br>
    <div class="moz-cite-prefix">On 2019-03-11 02:13, Crispin
      Pemberton-Pigott wrote:<br>
    </div>
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cite="mid:BN6PR22MB0049CC70ABB69A16D7301549B14F0@BN6PR22MB0049.namprd22.prod.outlook.com">
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        <p class="MsoNormal"><span style="mso-fareast-language:EN-US">Millions!<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US">I
            was attending a barn fire near my home in Cherrywood,
            Ontario about 1971 or so, and as my step-father had an
            aqualung, I took it over. The barn was so full of pyrolysis
            gases from the auto-ignited hay (haylage, they called it)
            that it was becoming impossible to fight the fire.  There
            was serious danger of suffocation if anyone tried to “open
            the barn” higher up because it would take time.  Clearing
            the fire required removing the pyrolyzing material by hand
            with pitchforks as the community members could toss it to
            the front end loader.
            <o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-US">I
            used the aqualung to enter the building and walk over the
            top of the hay though the gases (which really stung the eyes
            I might add) and kicked out a board at the end of the barn
            creating a ventilation hole.  Air then entered the working
            space and the pyrolysis gases left the building through one
            end.<o:p></o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">That was my first experience with
          auto-ignition of biomass.<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">Later, a farmer in Saskatchewan worked out
          how to get his manure pile to “cook” and by passing a coil of
          water-filled pipe under it, or buried in it, he heated his
          house for a whole winter.  So the challenge is not to prevent
          “self-cooking” but to control it in a useful manner.<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">Right Paul?<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">Crispin<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">++++++++<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
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              <p class="MsoNormal">A question related to biomass waste
                parallel with coal - are there instances of
                auto-ignition in any biomass waste?><o:p></o:p></p>
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              <p class="MsoNormal"><o:p> </o:p></p>
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              <p class="MsoNormal" style="margin-bottom:12.0pt">N<br>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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