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    <p>Dr. Adam,</p>
    <p>Thank you for your questions.</p>
    <p>The air moves upward through the stove, as in other stoves, since
      the hot gasses inside are less dense and lighter in weight then
      the surrounding air.  This makes the flame gas buoyant in the
      atmosphere and so it is buoyed upward by the heavier air.</p>
    <p> It can use pellets, found wood, or any suitable dry biomass that
      is porous enough to allow the gasses to pass upward and dense
      enough to give some good cook time.  When backpacking I use found
      sticks arranged vertically in the fuel chamber.  I pack them into
      the stove until I can shake the stove and it just stops rattling. 
      This is compact enough to give a good cooking time, and loose
      enough to let the gasses pass.  The fuel cannot cover the
      secondary air holes.<br>
    </p>
    <p>There is no double wall, only the single tin can.  It was
      designed to be simple, cheap to build, and light weight to not be
      a burden to carry on my back while backpacking.  The single wall
      design is not as efficient as the double wall design, but it
      works.  The secondary air is still preheated since the hot tin can
      heats the surrounding air which then rises to enter the secondary
      air holes.  There are commercial stoves which are more efficient,
      if you want to pay to buy  and transport them.  For a situation
      like Ukraine, with so much need, a simple and easily made stove
      from readily available materials might be better.  <br>
    </p>
    <p>There are lots of hobo type stoves on the internet, but they
      really smoke and have to be constantly watched and fed with fuel. 
      This TLUD burns cleaner and needs no attention while cooking.  It
      is a nice balance between more efficient stoves and hobo stoves.<br>
    </p>
    <p>Respectfully,</p>
    <p>Kirk H.<br>
    </p>
    <div class="moz-cite-prefix">On 3/14/2022 1:44 AM, dr.adam wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:1502369968.829193.1647247457999@mail.yahoo.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div class="ydpd065c316yahoo-style-wrap" style="font-family:times
        new roman, new york, times, serif;font-size:16px;">
        <div>
          <div dir="ltr" data-setdir="false">hmm,</div>
          <div dir="ltr" data-setdir="false">Question: How comes the air
            through the primary air holes upwards?</div>
          <div dir="ltr" data-setdir="false"><br>
          </div>
          <div dir="ltr" data-setdir="false">1) It is used with <b>pellets
            </b>only and the air will pass through/between the pellets
            ??<br>
            <div>2) There is some space, <b>double wall</b> between
              pellets and outer wall which is not shown on the drawing 
              ??</div>
            <div dir="ltr" data-setdir="false">Thanks</div>
            <div dir="ltr" data-setdir="false">Chris ADAM<br>
            </div>
          </div>
        </div>
        <div><br>
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      <div id="ydpad447d5eyahoo_quoted_7906132908"
        class="ydpad447d5eyahoo_quoted">
        <div style="font-family:'Helvetica Neue', Helvetica, Arial,
          sans-serif;font-size:13px;color:#26282a;">
          <div> On Monday, 14 March 2022, 10:59:19 GMT+3, Harris, Kirk
            <a class="moz-txt-link-rfc2396E" href="mailto:gkharris316@comcast.net"><gkharris316@comcast.net></a> wrote: </div>
          <div><br>
          </div>
          <div><br>
          </div>
          <div>
            <div id="ydpad447d5eyiv1717553209">
              <div>
                <p>All,</p>
                <p>This stove was designed for backpacking, and would
                  work for such a situation.  It has been on this list
                  before.  It is cheap, portable, and easy to make using
                  a single food can.  It works well and is easy on fuel
                  use.<br clear="none">
                </p>
                <p>Kirk H.</p>
                <p><img src="cid:3SVEZZBosiF9BoUDxB1D" alt=""
                    style="width: 100%; max-width: 512px;"
                    data-inlineimagemanipulating="true"
                    moz-do-not-send="true"></p>
                <div id="ydpad447d5eyiv1717553209yqtfd10709"
                  class="ydpad447d5eyiv1717553209yqt4811143956">
                  <div class="ydpad447d5eyiv1717553209moz-cite-prefix">On
                    3/12/2022 9:32 AM, Ronal Larson wrote:<br
                      clear="none">
                  </div>
                </div>
                <blockquote type="cite">
                  <div id="ydpad447d5eyiv1717553209yqtfd86574"
                    class="ydpad447d5eyiv1717553209yqt4811143956">
                    <pre class="ydpad447d5eyiv1717553209moz-quote-pre">Paul and list, cc Kevin

        I suggest Kevin’s recent promotion of a small hole in the middle of a traditional 3-stone fire.  Stacking is non-standard and importan.

        The resulting char should be especially helpful in the fields.  

        Better than zero cost.

Ron


</pre>
                    <blockquote type="cite">
                      <pre class="ydpad447d5eyiv1717553209moz-quote-pre">On Mar 12, 2022, at 9:30 AM, Paul Arveson <a shape="rect" href="mailto:paularveson@gmail.com" class="ydpad447d5eyiv1717553209moz-txt-link-rfc2396E" target="_blank" rel="noreferrer noopener" moz-do-not-send="true"><paularveson@gmail.com></a> wrote:

I am getting requests from Rotary clubs and other charities for stove designs appropriate for Ukrainians -- for both cooking and space heating.  I wonder if you could suggest suitable products and/or designs that I could share.

Thanks,

Paul Arveson
Solar Household Energy, Inc.


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