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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Paul,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I like the vase. And having a pot of water on top collecting ‘energy’ as the WACW cools seems like a great method of measuring energy loss during the cooling that can be added on to the values determined from a ground and tested WACW. Wonder if that would work - Crispin? <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Frank<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Stoves [mailto:stoves-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Paul Olivier<br><b>Sent:</b> Tuesday, December 04, 2012 12:41 PM<br><b>To:</b> Discussion of biomass cooking stoves<br><b>Subject:</b> Re: [Stoves] Equipment required for testing stoves<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Frank,<br><br>Getting an accurate dry weight of biochar is indispensable in being able to sell it.<br>If we douse the biochar with water, then we no longer have an accurate measurement of dry weight.<br>Also biochar right out of the gasifier contains valuable heat that could be used in keeping food warm.<br><br>Therefore I designed a terracotta vase to contain the hot biochar.<br>A pot placed on top of the vase prevents oxygen from entering.<br>The vase shown in the drawing below can hold six liters of biochar.<br>This is the volume of rice hull biochar produced in my 150 gasifier.<br><a href="https://dl.dropbox.com/u/22013094/150%20Gasifier/Terrecotta%20Vase/Drawing/Terracotta%20Vase.pdf">https://dl.dropbox.com/u/22013094/150%20Gasifier/Terrecotta%20Vase/Drawing/Terracotta%20Vase.pdf</a><br><br>Thanks.<br>Paul Olivier<br><br><br><br><o:p></o:p></p><div><p class=MsoNormal>On Wed, Dec 5, 2012 at 3:20 AM, Frank Shields <<a href="mailto:frank@compostlab.com" target="_blank">frank@compostlab.com</a>> wrote:<o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Hi Crispin,<br><br>Weighing the fuel when removed (hot and burning) and dry weight after<br>soaking with water, draining (screen) and drying is not a convenient<br>procedure to determine moisture left -and prone to error - but only method I<br>can think of at the moment.<br>Water puts out a fire by taking away its heat. So wondering if there is<br>another method that could be used? Combination nitrogen gas and pieces of<br>steel in a tumbler? Must be some way besides water.<br><br>Frank<br><br><br>Frank Shields<br>Control Laboratories, Inc.<br>42 Hangar Way<br>Watsonville, CA 95076<br>(831) 724-5422 tel<br>(831) 724-3188 fax<br><a href="http://www.biocharlab.com" target="_blank">www.biocharlab.com</a><br><br><br><br><br><br><br><br><br>-----Original Message-----<br>From: Stoves [mailto:<a href="mailto:stoves-bounces@lists.bioenergylists.org">stoves-bounces@lists.bioenergylists.org</a>] On Behalf Of<br>Crispin Pemberton-Pigott<br>Sent: Tuesday, December 04, 2012 11:26 AM<br>To: Stoves<br>Subject: Re: [Stoves] Equipment required for testing stoves<br><br>Dear Frank<br><br>You are on the right track, in my view. The assumed energy for the wood and<br>char is a major source of imprecision in the test.<br><br>As for quenching with water: unfortunately we need to know the residual<br>moisture content of the fuel 'as removed'. That varies a lot depending on<br>the stove type. Quenching it with nitrogen is an alternative.<br><br>Regards<br>Crispin<br>-----Original Message-----<br>From: "Frank Shields" <<a href="mailto:frank@compostlab.com">frank@compostlab.com</a>><br>Sender: "Stoves" <<a href="mailto:stoves-bounces@lists.bioenergylists.org">stoves-bounces@lists.bioenergylists.org</a>><br>Date: Tue, 4 Dec 2012 10:19:39<br>To: 'Discussion of biomass cooking stoves'<<a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>><br>Reply-To: Discussion of biomass cooking stoves<br> <<a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>><br>Subject: [Stoves] Equipment required for testing stoves<br><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">stoves@lists.bioenergylists.org</a><br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br><a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists%0A.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists<br>.org</a><br><br>for more Biomass Cooking Stoves, News and Information see our web site:<br><a href="http://www.bioenergylists.org/" target="_blank">http://www.bioenergylists.org/</a><br><br><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">stoves@lists.bioenergylists.org</a><br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br><a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists%0A.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists<br>.org</a><br><br>for more Biomass Cooking Stoves, News and Information see our web site:<br><a href="http://www.bioenergylists.org/" target="_blank">http://www.bioenergylists.org/</a><br><br><br><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">stoves@lists.bioenergylists.org</a><br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br><a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a><br><br>for more Biomass Cooking Stoves, News and Information see our web site:<br><a href="http://www.bioenergylists.org/" target="_blank">http://www.bioenergylists.org/</a><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><br>-- <br>Paul A. Olivier PhD<br>27/2 Phu Dong Tieng Vuong<br>Dalat<br>Vietnam<br><br>Louisiana telephone: 1-337-447-4124 (rings Vietnam)<br>Mobile: 090-694-1573 (in Vietnam)<br>Skype address: Xpolivier<br><a href="http://www.esrla.com/" target="_blank">http://www.esrla.com/</a><o:p></o:p></p></div></body></html>