<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Dear all: <span class="hps">I think someone</span> <span class="hps">can design</span> <span class="hps">a device</span> <span class="hps">to store wood</span> <span class="hps">and reuse the</span> <span class="hps">heat to dry</span> <span class="hps">the wood</span><span>, the owner</span> <span class="hps">must cook</span> <span class="hps"> the first day</span> <span class="hps">with</span> <span class="hps">dry wood</span><span>,</span> <span class="hps">after</span> <span class="hps">that they will have</span> <span class="hps">dry firewood</span> <span class="hps">every day</span><span>, for example</span> <span class="hps">a box</span> to store <span class="hps">up to 25</span> <span class="hps">pounds of</span> <span class="hps">wood</span> <span class="hps">at the base of</span> <span
class="hps alt-edited">the chimney</span> <span class="hps">might work. I´ll tried to do something as soon as I can.</span></span></div><div><span><span class="hps"></span></span> </div><div><span><span class="hps">Best regard</span></span></div><div><span><span class="hps"></span></span> </div><div><span><span class="hps">Gustavo</span></span></div><div><span><span class="hps">El Salvador</span></span></div><div><span></span> </div><div><br></div> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <div class="hr" style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); height: 0px; line-height: 0; font-size: 0px;" contenteditable="false" readonly="true"></div> <font face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> Frank Shields
<frank@compostlab.com><br> <b><span style="font-weight: bold;">To:</span></b> 'Discussion of biomass cooking stoves' <stoves@lists.bioenergylists.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, June 12, 2013 11:47 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [Stoves] Burning wet wood<br> </font> </div> <div class="y_msg_container"><br><div id="yiv4896780717"><style><!--
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--></style><div><div class="yiv4896780717WordSection1"><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;">Dear Crispin, Tom and all,</span></b></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;"> </span></b></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;">I would think a batch mode would be better. A continuous mode means you have water vapor all the time. In batch mode one would heat and find the gas temperature goes to 100c. Then when the water is finally burned off the temperature rises and you can then push the fuel forward to do what you want to do with the now dry wood. Not sure this happens and have not seen a graph of this but think this is what would happen. </span></b></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;">
</span></b></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;">Frank</span></b></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;"> </span></b></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;"> </span></b></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;">Thanks </span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;"> </span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;">Frank Shields</span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;"> </span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;">BioChar Division</span></div><div
class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;">Control Laboratories, Inc. </span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;">42 Hangar Way</span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;">Watsonville, CE 95076</span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;"> </span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;">(831) 724-5422 tel</span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;">(81) 724-3188 fax</span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;"><a href="mailto:frank@biocharlab.com" target="_blank" rel="nofollow" ymailto="mailto:frank@biocharlab.com"><span style="color:
blue;">frank@biocharlab.com</span></a></span></div><div class="yiv4896780717MsoNormal"><span style="color: rgb(112, 48, 160); font-size: 12pt;">www.controllabs.com</span></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;"> </span></b></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;"> </span></b></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;"> </span></b></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;"> </span></b></div><div class="yiv4896780717MsoNormal"><b><span style="color: rgb(112, 48, 160); font-size: 14pt;"> </span></b></div><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentColor currentColor; padding: 3pt 0in 0in;"><div
class="yiv4896780717MsoNormal"><b><span style='font-family: "Tahoma", "sans-serif"; font-size: 10pt;'>From:</span></b><span style='font-family: "Tahoma", "sans-serif"; font-size: 10pt;'> Stoves [mailto:stoves-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Crispin Pemberton-Pigott<br><b>Sent:</b> Wednesday, June 12, 2013 9:05 AM<br><b>To:</b> 'Discussion of biomass cooking stoves'<br><b>Subject:</b> Re: [Stoves] Burning wet wood</span></div></div></div><div class="yiv4896780717MsoNormal"> </div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA">Dear Dale</span></div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA"> </span></div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA">I believe it is easiest to burn wet wood in a continuous feed fashion. I have had some recent experience in Indonesia trying burn wet (pretty damp) wood in a TLUD. Some TLUD's heat pretty much all the wood at once (they vary). When that
happens there is a huge burst of moisture in the emissions. This is visible on the HPT data quality check chart as depressed∑O<sub>2</sub> and ∑CO<sub>2</sub> lines (they should depress in synch). The evaporation of all the moisture early makes for problems later because then the wood it so dry it won’t stop self-pyrolysing. In other words if combustion conditions favour wet wood, later they do not favour dry wood remaining.</span></div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA"> </span></div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA">Tom has some experience, as does UK-Andrew in burning pretty wet biomass. The essential point is to keep the primary combustion zone hot enough to run the fire and still evaporate all that moisture. Heat recycling is by far the easiest way to do that.</span></div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA"> </span></div><div
class="yiv4896780717MsoPlainText"><span lang="EN-CA">Good to hear from you. Any recent experiments to repot? I have missed your great lab work.</span></div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA"> </span></div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA">Regards<br>Crispin</span></div><div class="yiv4896780717MsoPlainText"><span> </span></div><div class="yiv4896780717MsoPlainText"><span> </span></div><div class="yiv4896780717MsoPlainText"><span>+++++++</span></div><div class="yiv4896780717MsoPlainText"><span> </span></div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA">Have we ever looked at the question of how to design a stove to burn wood that is higher in moisture? It would seem that this is very important practical issue, and that a stove that could burn wet wood would be very popular. What makes a stove burn wet wood well or poorly?</span></div><div
class="yiv4896780717MsoPlainText"><span lang="EN-CA">The only time I remember someone saying something about this was Crispin, who I believe said recently that preheating the primary air makes it possible to burn wetter wood. This would be easy with a batch stove, harder with continuous feed. Other than that, I can think of a couple things that might help burn wetter wood. </span></div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA"> </span></div><div class="yiv4896780717MsoPlainText"><span lang="EN-CA">Dale Andreatta </span></div></div></div></div><br>_______________________________________________<br>Stoves mailing list<br><br>to Send a Message to the list, use the email address<br><a href="mailto:stoves@lists.bioenergylists.org" ymailto="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br><a
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