<div dir="ltr">Hey,<div><br></div><div>There is a guy making wood chips here. Yes, they are perfect for our Troika stoves here in Uganda. Really ideal fuels</div><div><br></div><div>Nolbert.</div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">2014-07-08 8:26 GMT+03:00 Otto Formo <span dir="ltr"><<a href="mailto:terra-matricula@hotmail.com" target="_blank">terra-matricula@hotmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div dir="ltr">Thanks for the usefull information about fuel and moisture content.<br>Paal always said;<br>Stoves and fuel are linked together, VERY much.<br> <br>According to my brief and imediate understanding of the attachment, proper dried woodchips would be the most suitable fuel for a ND gasifier and cater for most situations, like cooking and biochar production.<br>
<br>The pellet plant are in the early stage of operation, and a woodchipper will be operationel in Zambia, next month - GOOD.<br> <br>Enjoy the summer.<br> <br>Otto<br> <br><div><hr>From: <a href="mailto:rongretlarson@comcast.net" target="_blank">rongretlarson@comcast.net</a><br>
Date: Mon, 7 Jul 2014 12:45:06 -0600<br>To: <a href="mailto:stoves@lists.bioenergylists.org" target="_blank">stoves@lists.bioenergylists.org</a><br>Subject: [Stoves] Fwd: Moisture Paper<div><div class="h5"><br><br><div>List (cc Yibo)</div>
<div><br></div><div><span style="white-space:pre-wrap"> </span>The attachment should be of interest to quite a few on this list. I hope you will react to my following comments back to Yibo/Jackie - about to start a new graduate school stint in the USA. Yibo and I interacted in Beijing last year for a few days - but this is the first time I have had to look closely at all the results. I now consider this issue of moisture content to be more important than I did earlier.</div>
<div><br></div><div><br></div><div>Yibo:</div><div><span style="white-space:pre-wrap"> </span>Sorry for the delay in responding. Been busy.</div><div><br></div><div><span style="white-space:pre-wrap"> </span>I was surprised with some of the results. I believe that at least some of the results are due to equations 1 and 2 being different from many. Not wrong, just different. I would like to see graphs, where the MC is NOT subtracted in the denominator. I don’t really like the subtraction of the char energy either in Eq. 2 - but it is much preferred over Eq. 1. My preference is to report separately on the three quantities separately - for energy to the pot (desired), to water evaporation from the fuel (no value to anyone), and to energy in the char (valuable to some of us).</div>
<div><br></div><div><span style="white-space:pre-wrap"> </span>As shown, it appears in Figures 3a and 3b to be preferable to have high MC. This is counter-intuitive - and I believe is due to the form of Eqs. 1 and 2. If you would be so good as to forward the raw data and your Excel spread sheet, I am anxious to see how different efficiency definitions change the result. Also, I need to check how you calculated the energy effect of MC, and to know what LHV you used for your char.</div>
<div><br></div><div><span style="white-space:pre-wrap"> </span>It is less obvious to me how to explain the results in Fig. 5. I think it is because the power levels were significantly modified by MC. Many have reported emissions increases at higher power levels (more primary air). It would be interesting to see the same curves with similar power levels. That is not possible without new testing.</div>
<div><br></div><div><span style="white-space:pre-wrap"> </span>Figure 4 was not a surprise for the wet weight basis, but I am surprised that there was no drop off in the char weight on a dry basis (cross-hatched). Again, I think there is a power level (airflow) issue here. That will take a lot of work - I presume you had no control over either primary or secondary air?</div>
<div><br></div><div><span style="white-space:pre-wrap"> </span>Congratulations on getting this paper published. It is important.</div><div><br></div><div><span style="white-space:pre-wrap"> </span>I strongly support your main conclusion on the need for testing at different (perhaps standard?) MC levels.</div>
<div><br></div><div>Ron</div><br><div><blockquote><div style="line-height:1.7;font-family:Arial;font-size:14px"></div></blockquote></div><br></div></div><div><blockquote><div style="line-height:1.7;font-family:Arial;font-size:14px">
</div></blockquote><div><br></div><div><br></div><div>Begin forwarded message:</div><br><blockquote><div><span style="color:rgba(0,0,0,1);font-family:"Helvetica""><b>From: </b></span><span style="font-family:"Helvetica"">"Huangfu Yibo" <<a href="mailto:hfyblx@163.com" target="_blank">hfyblx@163.com</a>><br>
</span></div><div><span style="color:rgba(0,0,0,1);font-family:"Helvetica""><b>Subject: </b></span><span style="font-family:"Helvetica""><b>Re:Re: Moisture Paper</b><br></span></div><div><span style="color:rgba(0,0,0,1);font-family:"Helvetica""><b>Date: </b></span><span style="font-family:"Helvetica"">July 1, 2014 at 8:07:18 PM MDT<br>
</span></div><div><span style="color:rgba(0,0,0,1);font-family:"Helvetica""><b>To: </b></span><span style="font-family:"Helvetica"">"Ronal W. Larson" <<a href="mailto:rongretlarson@comcast.net" target="_blank">rongretlarson@comcast.net</a>><br>
</span></div><br><div><div style="line-height:1.7;font-family:Arial;font-size:14px"><br><div>Dear Professor,</div><div><br></div><div>I booked the ticket on Aug. 11th. from Beijing to Pullman. I have been the new ARC lab for one time, which is quite a big place far away from the town, near a small river and in the forest. </div>
<br>Of course you can send it to the stovelist, and I am looking forward to the comments, too ^_^<br><div><br></div><div><br></div><div>Best wishes</div><div><br></div><div>Yibo</div><div></div><div></div><br></div></div>
</blockquote><blockquote><div><div style="line-height:1.7;font-family:Arial;font-size:14px">At 2014-07-02 09:19:42, "Ronal W. Larson" <<a href="mailto:rongretlarson@comcast.net" target="_blank">rongretlarson@comcast.net</a>> wrote:<br>
<blockquote style="padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid">Yibo - see below</blockquote></div></div></blockquote></div><span style="white-space:pre-wrap"> </span><snip non pertinent exchanges><br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><span></span><span></span>Nolbert Muhumuza<br>President & Chief Operations Officer<br><br><div><b>Awamu Biomass Energy Ltd.</b><br>P.O. Box 40127, Nakawa<br>
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