<html><head><base href="x-msg://86/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Paal, <div><br></div><div>Thanks for that insight on wood availability. As related to it, the question the biomass briquetter has to ask is, how much NON wood biomass is generated yearly and of that how much is available for use in biomass briquetting. Of course its a small faction of the wood harvest but its available each and every year the tree is live… We had prepared some tables of different biomass sustainable offtake, in cooperation with a long established Japanese agrofrestry project in Uganda and the Uganda Forestry department back in 2003 when we were writing our theory and applications manual but the tables are only generalised for a set of different bioregions and land use types. </div><div><br></div><div>It would be interesting to get your own take on Miombo forest per se. </div><div><br></div><div>Richard / freezing in Dar es Salaam </div><div><br><div><br><div><div>On Nov 13, 2011, at 10:47 AM, Paal wendelbo wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Verdana; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div bgcolor="#ffffff"><div><font size="2"><div style="margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt; margin-left: 0cm; "><span lang="EN-GB" style="font-size: 11pt; "><font face="Calibri">Crispin, Anderson and others<o:p></o:p></font></span></div><div style="margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt; margin-left: 0cm; "><span lang="EN-GB" style="font-size: 11pt; "><font face="Calibri"><span> <span class="Apple-converted-space"> </span></span>A common Miombo forest in<span class="Apple-converted-space"> </span><st1:place w:st="on">Africa</st1:place><span class="Apple-converted-space"> </span>will give about 3 ton wood per ha a year. 3 ton of dry wood will give<span class="Apple-converted-space"> </span><st1:metricconverter w:st="on" productid="800 kg">800 kg</st1:metricconverter><span class="Apple-converted-space"> </span>of charcoal. A household of 5 consume 2-<st1:metricconverter w:st="on" productid="3 kg">3 kg</st1:metricconverter><span class="Apple-converted-space"> </span>charcoal a day or about<span class="Apple-converted-space"> </span><st1:metricconverter w:st="on" productid="800 kg">800 kg</st1:metricconverter><span class="Apple-converted-space"> </span>a year. To produce<span class="Apple-converted-space"> </span><st1:metricconverter w:st="on" productid="3 kg">3 kg</st1:metricconverter><span class="Apple-converted-space"> </span>of charcoal you need 10-<st1:metricconverter w:st="on" productid="12 kg">12 kg</st1:metricconverter>of dry fire wood in a common kiln. That will give one day cooking on a charcoal stove, and almost no biochar. 10-12kg dry chopped wood will give 3 days of cooking on a TLUD-ND or another<span class="Apple-converted-space"> </span><st1:place w:st="on">FES</st1:place><span class="Apple-converted-space"> </span>and<span class="Apple-converted-space"> </span><st1:metricconverter w:st="on" productid="2.5 kg">2.5 kg</st1:metricconverter><span class="Apple-converted-space"> </span>of biochar<span class="Apple-converted-space"> </span><span> </span><span> </span><o:p></o:p></font></span></div><div style="margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt; margin-left: 0cm; "><span lang="EN-GB" style="font-size: 11pt; "><font face="Calibri"><span> </span><span> <span class="Apple-converted-space"> </span></span>Energy forestry using just the sprouting every year can give up to 10 ton wood per ha a year, easy to cut to appropriate fuel for TLUD-ND’s or other types of<span class="Apple-converted-space"> </span><st1:place w:st="on">FES</st1:place>. By adding some biochar to soil of bad quality 20-30 % increased yields can be obtained, which will give more food, more household energy, more jobs, better economy, better health for women and children and saving<span> </span>the forest. It can probably be as simple as this and is that not some of what we are looking for and need?<o:p></o:p></font></span></div><div style="margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt; margin-left: 0cm; "><span lang="EN-GB" style="font-size: 11pt; "><font face="Calibri"><span> <span class="Apple-converted-space"> </span></span>We know some changes have to take place on the household energy sector and we have to start somewhere. Why not start with small scale farmers on sandy soil, and from there develop the new household bio-energy strategy for developing countries. Probably also with the charcoal business, they have the whole infrastructure intact and can easy change from charcoal to alternative biomass like chopped wood or pellets from agriculture and forestry related waste. Or do you have a better solution Crispin?<o:p></o:p></font></span></div><div style="margin-top: 0cm; margin-right: 0cm; margin-bottom: 0pt; margin-left: 0cm; "><span lang="EN-GB" style="font-size: 11pt; "><font face="Calibri">With regards Paal W<o:p></o:p></font></span></div></font></div>_______________________________________________<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">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/">http://www.bioenergylists.org/</a><br><br></div></span></blockquote></div><br></div></div></body></html>