<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear Paul, Stovers,<div class=""><br class=""></div><div class=""><see below></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Nov 24, 2015, at 4:26 AM, Paul Anderson <<a href="mailto:psanders@ilstu.edu" class="">psanders@ilstu.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
  
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    Frank,<br class="">
    <br class="">
    I (and probably others) are reading with interest your dialog with
    Crispin.   Important stuff (but outside of my comfort zone for
    contributing.)   Let's see where this leads us.<br class="">
    <br class="">
    I would appreciate some comments about the change in the volatile
    matter (and other issues) when char is created at 450 C vs 550 C vs
    650 C (or other key temperatures).   You have pointed out the
    importance of E 450 (energy in 450 degree C Char).   But is it
    changing much when created at higher temps?  We generally say that
    TLUD char is 550 or 600 C char.<br class=""></div></div></blockquote><div><br class=""></div><div>What is important here (for me) is coming up with a reasonable accurate energy value for the char (DAF) without additional testing. Higher temperatures would be better. With a TGA any temperature is easy to get so from now on I will try to remember to say 600c. From what I have seen there is little difference. </div><div><br class=""></div><div>And what we are doing in the lab to normalize energy from the fuels chosen has nothing to do with what you are doing in real life. Lab does it so all labs will get the same results from all stoves. Once we figure out how to do that you can bring in your stoves for testing and we labs will see what your stove gets. </div><div><br class=""></div><div>What I am counting on is that the carbon graphite structure in char produced will have the same energy value as that derived from grass, twigs, manure, bark, wood etc. And that char is made of 90+% carbon on a DAF basis at the higher temperature you suggest (600c). </div><div><br class=""></div><div>That total char energy is then split into Solid-C -> CO and CO -> CO2 energy by a percentage. The CO -> CO2 energy I plan to add that to the volatile pyrolyze energy as (possible) energy that can be used for the task.  The best designed stove will be able to use as much as that as possible in the secondary. The SolidC -> CO is heating the stove and boiling moisture, keeping the fire going, etc. but not for the secondary flame used for the task. </div><div><br class=""></div><div>So we labs gather fuel as close as we can to the fuel used at a real site then normalize (tweak) it based on all the volatile energy (maximum) that can be used to do the task. Is my thinking.</div><div><br class=""></div><blockquote type="cite" class=""><div class=""><div bgcolor="#FFFFFF" text="#000000" class="">
    <br class="">
    How much are these differences going to impact the discussion you
    are having with Crispin?   I suspect that above 450 C, the weight
    loss of higher temp chars is closely proportional to the energy lost
    when that weight was lost.   If that is not correct, then the
    calculations you are  discussing with Crispin have an additional
    complication, which is the temperature at which the resultant char
    was formed.<br class=""></div></div></blockquote><div><br class=""></div><div>More testing needed BUT if you look at what Tom Reed did there is little (but some) difference in changing weight. But I am more inclined to require labs certified for stove testing to have a TGA and not concern with testing in the back yard as I once was. So 600c it is as long as I remember to use it. </div><div><br class=""></div><div>Whats left in the char is ash. And if a CHN analysis is run on the char to get percent carbon I have found the Oxygen and hydrogen to be very low on samples with low ash. Oxygen is done by difference. The CHN is challenging to get good results. Moisture absorbed upon sitting adds hydrogen and oxygen (weight not accounted for). More testing needs to be done to add to what Tom Reed (love that guy) has done so to get a percent carbon in the char DAF. That so to report the total energy value of the char.</div><div><br class=""></div><div>Regards</div><div><br class=""></div><div>Frank</div><div><br class=""></div><div><br class=""></div><div><br class=""></div><div><br class=""></div><br class=""><blockquote type="cite" class=""><div class=""><div bgcolor="#FFFFFF" text="#000000" class="">
    <br class="">
    Paul<br class="">
    <pre class="moz-signature" cols="72">Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD  
Email:  <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>   
Skype: paultlud      Phone: +1-309-452-7072
Website:  <a class="moz-txt-link-abbreviated" href="http://www.drtlud.com/">www.drtlud.com</a></pre>
    <div class="moz-cite-prefix">On 11/24/2015 12:09 AM, Frank Shields
      wrote:<br class="">
    </div>
    <blockquote cite="mid:AC611500-F2A8-474C-8041-72660D7F2F78@cruzio.com" type="cite" class="">
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      Dear Crispin, Stovers,
      <div class=""><br class="">
      </div>
      <div class="">Please see below:</div>
      <div class=""><br class="">
        <div class="">
          <blockquote type="cite" class="">
            <div class="">On Nov 23, 2015, at 11:25 AM, Crispin
              Pemberton-Pigott <<a moz-do-not-send="true" href="mailto:crispinpigott@outlook.com" class="">crispinpigott@outlook.com</a>>
              wrote:</div>
            <br class="Apple-interchange-newline">
            <div class="">
              <div class="WordSection1" style="page: WordSection1;
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                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class="">Dear
                    Frank<o:p class=""></o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class="">There
                    is a guy in India who is contributing to the work of
                    Working Group 3 (Field Testing) who says he can give
                    me an ultimate analysis of any biofuel based on 4
                    measurements.</span></div>
              </div>
            </div>
          </blockquote>
          <div class=""><br class="">
          </div>
          <div class="">Does he have a TGA and CHN analyzer? or calorimeter? </div>
          <div class=""><br class="">
          </div>
          <br class="">
          <blockquote type="cite" class="">
            <div class="">
              <div class="WordSection1" style="page: WordSection1;
                font-family: Helvetica; font-size: 18px; font-style:
                normal; font-variant: normal; font-weight: normal;
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                start; text-indent: 0px; text-transform: none;
                white-space: normal; widows: auto; word-spacing: 0px;
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                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class=""> It
                    reminds me of the work of Dr Tom Reed who proposed a
                    general case for all biomass composition. On an
                    ash-free dry basis, all biomass is substantially the
                    same, and when factoring in the volatile %, a
                    ‘pretty good guess’ can be made for the overall
                    composition. </span></div>
              </div>
            </div>
          </blockquote>
          <div class=""><br class="">
          </div>
          <div class="">Well this is where we really differ. We are talking
            biomass fuels ranging from manures to Richards formulated
            pressed fuels. Nothing you can look up. And all tests must
            be directly related to the fuel being used or we waste our
            time and lots of room for corruption. So we need to
            determine total energy, volatile matter at 550c and volatile
            energy 450C (under N2). Can he give us those values with a
            TGA? And a calorimeter to give total energy dry wt? If not
            we can go through the motions with your book values and see
            how things work. </div>
          <div class=""><br class="">
          </div>
          <div class="">What I do believe is the same is the energy value of the
            char (under N2 -DAF) values. It is between 80 and 90% carbon
            with one % hydrogen and the rest oxygen. I am suggesting
            giving that value 85%C, 1% H  to use in calculating for the
            energy of that fraction. That will be our biggest variable
            but because all will be using it and that a much larger
            energy fraction will go off as the volatiles (450c in N2)
            and that only a percentage of this energy value is used in
            the calculations for what is used to ‘boil the water’ task -
            it is a small error.  </div>
          <div class=""><br class="">
          </div>
          <div class="">For example: </div>
          <div class="">Total dry sample is 100g (1800kj)</div>
          <div class="">Ash 8g</div>
          <div class=""><br class="">
          </div>
          <div class=""><br class="">
          </div>
          <div class="">Volatile fraction 75g (450c-N2)(1800-510=1290kj)</div>
          <div class=""><br class="">
          </div>
          <div class=""><br class="">
          </div>
          <div class=""><br class="">
          </div>
          <div class="">Fixed sample 25g </div>
          <div class="">Fixed sample DAF 17g </div>
          <div class="">Estimating: </div>
          <div class="">(510kj) (using 30kj/g)</div>
          <div class=""><br class="">
          </div>
          <div class=""><br class="">
          </div>
          <div class="">Estimating: </div>
          <div class="">This is 85% carbon (14.5 g C) and <1% H (0.17g) </div>
          <div class=""><br class="">
          </div>
          <div class="">The carbon goes from Solid-C > CO and</div>
          <div class="">CO > CO2 both releasing energy.</div>
          <div class=""><br class="">
          </div>
          <div class="">****What I want help with is how to determine the
            percentage of the energy from the 14.5g carbon that is
            released when converting to CO and the rest of the energy
            from CO -> CO2. Not sure if its Bond Energy or Enthalpy
            to use for the calculations? </div>
          <div class=""><br class="">
          </div>
          <div class="">and what is the bond energy required to remove a carbon
            from a graphite sheet? I think its held with three bonds and
            the fourth holding the sheets together without a ‘bond’.
            That is C (three bonds C = 960 kj/mol or 960/12 = 80g??</div>
          <div class=""><br class="">
          </div>
          <div class="">O2 has a bond energy of 498 kj/mol or 498/16 = 31.1
            kj/g?? or is it 498 = 15.6??</div>
          <div class=""><br class="">
          </div>
          <div class=""><br class="">
          </div>
          <div class=""><br class="">
          </div>
          <div class="">Thanks for any help.</div>
          <div class=""><br class="">
          </div>
          <div class="">Regards</div>
          <div class=""><br class="">
          </div>
          <div class="">Frank</div>
          <div class=""><br class="">
          </div>
          <div class=""><br class="">
          </div>
          <div class=""><br class="">
          </div>
          <div class=""><br class="">
          </div>
          <br class="">
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                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class="">In
                    that case, using a formula I dug out of a moldy
                    book, I can calculate the energy content of the fuel
                    by adding in the ash and moisture again.<o:p class=""></o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class=""></span></div>
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            </div>
          </blockquote>
          <div class=""><br class="">
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          <div class=""><br class="">
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          <br class="">
          <blockquote type="cite" class="">
            <div class="">
              <div class="WordSection1" style="page: WordSection1;
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                normal; font-variant: normal; font-weight: normal;
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                start; text-indent: 0px; text-transform: none;
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                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class="">How
                    well this applies to dung and highly processed
                    fuels, I don’t know. It will be helpful to compare
                    the theory and practice of this and your (and
                    other?) approaches. It will make the science of
                    stoves more accessible.<o:p class=""></o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class="">I am
                    offline for a little while.  We will pick this up
                    again in Beijing.<o:p class=""></o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class="">Regards<o:p class=""></o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class="">Crispin<o:p class=""></o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><span style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif;" class="">Dear
                  Crispin,<o:p class=""></o:p></div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class="">Interesting.
                    A single stove with different inserts and a
                    collection of fuels that are often mixed. Lets not
                    make it easy! <o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class="">Any
                    combination of 1) fuels (and fuel mixes) and 2)
                    stove inserts for any 3) task that actually works
                    can be tested. For example if you fill a TLUD with
                    cow manure it likely will not complete a task of
                    boiling seven liters of water for an hour - so no
                    need to test.<o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class="">So
                    gather your one stove with insert, your one fuel (or
                    mix) and state the one task and test to make sure
                    the task can be completed.<o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class="">The
                    fuel description is two parts:<o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class="">1)
                    the general physical description of type, size,
                    shape, bark included, etc to gather fuel as close to
                    that being used as possible.<o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class="">2)
                    then fine tune the fuel by normalizing energy values
                    using the two volatile ones and the char (DAF) and
                    moisture.<o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class="">And
                    make sure the task has a sharp end point when
                    completed so to stop the clock.  <o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class="">So
                    if you have a calorimeter to get total energy and a
                    furnace with pipes to determine volatile energy and
                    can ash samples to determine char DAF content
                    (without ash included) we are ready to go.<o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""> Regards<o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class="">Frank<o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class="">Frank
                    Shields<o:p class=""></o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
                <div class="">
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                  <div class="">
                    <blockquote style="margin-top: 5pt; margin-bottom:
                      5pt;" class="" type="cite">
                      <div class="">
                        <div style="margin: 0cm 0cm 0.0001pt; font-size:
                          12pt; font-family: 'Times New Roman', serif;" class="">On Nov 22, 2015, at 3:30 PM, Crispin
                          Pemberton-Pigott <<a moz-do-not-send="true" href="mailto:crispinpigott@outlook.com" style="color: purple; text-decoration:
                            underline;" class="">crispinpigott@outlook.com</a>>
                          wrote:<o:p class=""></o:p></div>
                      </div>
                      <div style="margin: 0cm 0cm 0.0001pt; font-size:
                        12pt; font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                      <div class="">
                        <div class="">
                          <div class="">
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">Dear
                                  Frank the Patient<o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB"><br class="">
                                  <br class="">
                                  <o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">The
                                  stoves currently in use are burning
                                  everything. The description given by
                                  John Davies is apt: a box with a
                                  chimney. <o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB"><o:p class=""> </o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">>The
                                  fuels you list are very different so
                                  do you have several stoves designed to
                                  burn each of the different fuels? <o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB"><br class="">
                                  <br class="">
                                  <o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">Well that
                                  is the problem: no, there is a single
                                  stove. ‎ A possible high efficiency
                                  option is the use of inserts optimised
                                  for each fuel, but they are often
                                  burned together. For example people
                                  often mix dung and wood. Some efforts
                                  have been made to find 'more
                                  efficient' stoves which usually means
                                  extracting more heat without improving
                                  the combustion efficiency. I will
                                  check. <o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB"><br class="">
                                  <br class="">
                                  <o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">>The
                                  fuels need to be prepared as they are
                                  likely going to be on site regarding
                                  moisture and size, densified (pellets
                                  or pressed into cylinders), split,
                                  ground etc. Any process that is likely
                                  to take place at the location in prep
                                  for the combustion apparatus.<o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB"><o:p class=""> </o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">This is
                                  how to do a contextual test in a lab.
                                  There is no need to drag the lab into
                                  the field if you know what they are
                                  going to do and use. <o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB"><o:p class=""> </o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">The
                                  stoves are designed to heat and cook.
                                  And bake I think, at least some of
                                  them. The major issue I see is they
                                  are all similar to the Mongolian
                                  baseline stoves, which is to say,
                                  copies of a Russian portable wood
                                  stove.<span class="Apple-converted-space"> </span><o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB"><o:p class=""> </o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">>Only
                                  the stoves that can actually use the
                                  fuel and expect to do a good job for
                                  the task intended. <o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB"><br class="">
                                  <br class="">
                                  <o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">But we
                                  already know they are going to use all
                                  those fuels. Now what?<o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB"><o:p class=""> </o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">Regards<o:p class=""></o:p></span></div>
                            </div>
                            <div class="">
                              <div style="margin: 0cm 0cm 0.0001pt;
                                font-size: 12pt; font-family: 'Times New
                                Roman', serif; background-color: white;" class=""><span style="font-family:
                                  'Slate Pro', serif; color: rgb(31, 73,
                                  125);" class="" lang="EN-GB">Crispin<o:p class=""></o:p></span></div>
                            </div>
                          </div>
                        </div><p class="MsoNormal" style="margin: 0cm 0cm
                          12pt; font-size: 12pt; font-family: 'Times New
                          Roman', serif;">_______________________________________________<br class="">
                          Stoves mailing list<br class="">
                          <br class="">
                          to Send a Message to the list, use the email
                          address<br class="">
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                            underline;" class="">stoves@lists.bioenergylists.org</a><br class="">
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                          to UNSUBSCRIBE or Change your List Settings
                          use the web page<br class="">
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                            underline;" class="">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a><br class="">
                          <br class="">
                          for more Biomass Cooking Stoves,  News and
                          Information see our web site:<br class="">
                          <a moz-do-not-send="true" href="http://stoves.bioenergylists.org/" style="color: purple; text-decoration:
                            underline;" class="">http://stoves.bioenergylists.org/</a><o:p class=""></o:p></p>
                      </div>
                    </blockquote>
                  </div>
                  <div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif;" class=""><o:p class=""> </o:p></div>
                </div>
              </div>
              <span style="font-family: Helvetica; font-size: 18px;
                font-style: normal; font-variant: normal; font-weight:
                normal; letter-spacing: normal; orphans: auto;
                text-align: start; text-indent: 0px; text-transform:
                none; white-space: normal; widows: auto; word-spacing:
                0px; -webkit-text-stroke-width: 0px; float: none;
                display: inline !important;" class="">_______________________________________________</span><br style="font-family: Helvetica; font-size: 18px;
                font-style: normal; font-variant: normal; font-weight:
                normal; letter-spacing: normal; orphans: auto;
                text-align: start; text-indent: 0px; text-transform:
                none; white-space: normal; widows: auto; word-spacing:
                0px; -webkit-text-stroke-width: 0px;" class="">
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                display: inline !important;" class=""><a moz-do-not-send="true" href="mailto:stoves@lists.bioenergylists.org" class=""></a><a class="moz-txt-link-abbreviated" href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a></span><br style="font-family: Helvetica; font-size: 18px;
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                none; white-space: normal; widows: auto; word-spacing:
                0px; -webkit-text-stroke-width: 0px;" class="">
              <span style="font-family: Helvetica; font-size: 18px;
                font-style: normal; font-variant: normal; font-weight:
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                text-align: start; text-indent: 0px; text-transform:
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                0px; -webkit-text-stroke-width: 0px; float: none;
                display: inline !important;" class="">for more Biomass
                Cooking Stoves,  News and Information see our web site:</span><br style="font-family: Helvetica; font-size: 18px;
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              <span style="font-family: Helvetica; font-size: 18px;
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                normal; letter-spacing: normal; orphans: auto;
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                none; white-space: normal; widows: auto; word-spacing:
                0px; -webkit-text-stroke-width: 0px; float: none;
                display: inline !important;" class=""><a moz-do-not-send="true" href="http://stoves.bioenergylists.org/" class=""></a><a class="moz-txt-link-freetext" href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a></span></div>
          </blockquote>
        </div>
        <br class="">
      </div>
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      <br class="">
      <pre wrap="" class="">_______________________________________________
Stoves mailing list

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

for more Biomass Cooking Stoves,  News and Information see our web site:
<a class="moz-txt-link-freetext" href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a>

</pre>
    </blockquote>
    <br class="">
  </div>

_______________________________________________<br class="">Stoves mailing list<br class=""><br class="">to Send a Message to the list, use the email address<br class=""><a href="mailto:stoves@lists.bioenergylists.org" class="">stoves@lists.bioenergylists.org</a><br class=""><br class="">to UNSUBSCRIBE or Change your List Settings use the web page<br class="">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org<br class=""><br class="">for more Biomass Cooking Stoves,  News and Information see our web site:<br class="">http://stoves.bioenergylists.org/<br class=""><br class=""></div></blockquote></div><br class=""></div></body></html>