<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dear David and Chanakya,<div><br></div><div>Thanks for the thoughts on this one. Carbon credits are really a political thing and politics and science rarely make a good pair. I can see why you left the field. It could be very frustrating. </div><div><br></div><div>In my case, a funder wanted to know how much CO2 we would abate and the purpose wasn't for carbon credits so I think I will use the combined method giving around 5 tons per year per biogas unit. Thanks for the help.</div><div><br></div><div><br><div apple-content-edited="true">
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; 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; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; 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 style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Kyle<br>Managing Director<br>Schutter Energy Ltd.</div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><a href="http://www.takamotobiogas.com">www.takamotobiogas.com</a><br><br><br></div></span></span>
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<br><div><div>On Nov 12, 2012, at 8:31 AM, Hoysall Chanakya wrote:</div><br class="Apple-interchange-newline"><div>Dear Kyle and David,<br>Thanks David for more clarifications. The more you look into this<br>cupboard, more the skeletons fall out. I was hoping to simplify the<br>calculations for Kyle. I strongly agree it is important to know why one<br>would like to carry out these estimates. Else the tussle between a<br>researcher's conscience and simpleton "followers" convenience is immense. <br>Especially if you attempt to dig into the assumptions behind these<br>numbers.<br><br>I was involved at the early stages of country level estimates in the late<br>nineties and could not accept these generalizations as a researcher and<br>therefore moved out. For example few non-woody or partially woody<br>agro-residues herbaceous biomass have about 32-35% as C. For that matter<br>even most fuel wood species under normal usage conditions of 10-15%<br>moisture do not cross 40% C. Yet, convention is to assume 50%C in<br>biomass. An even greater conflict with me was the methane emission from<br>an average rural Indian cow which is assumed to be 50kg per annum. With<br>this assumption, One could calculate to show that such a pasture grazed<br>rural Indian cow /bullock (120-150kg) that barely consumes 3kg dry matter<br>(avg/d) sends /belches out 300L biogas a day. Skeletons indeed tumble<br>out. Yet as David has put it these numbers are convenient when you are<br>not a researcher and want to give a modest /humble estimate of emissions<br>avoided.<br>Best wishes<br>Chanakya<br><br>-- <br>Dr. Hoysall Chanakya<br>Centre for Sustainable Technologies<br>(Assoc. Faculty at Centre for Infrastructure, Sustainable Transport and<br>Urban Planning (CiSTUP) and Centre for Contemporary Studies)<br>Indian Institute of Science, Bangalore 560 012<br>ph 91-80-2293 3046; fax-91 80 2360 0683<br><br><br>-- <br>This message has been scanned for viruses and<br>dangerous content by MailScanner, and is<br>believed to be clean.<br><br><br>_______________________________________________<br>Digestion mailing list<br><br>to Send a Message to the list, use the email address<br><a href="mailto:Digestion@bioenergylists.org">Digestion@bioenergylists.org</a><br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br>http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org<br><br>for more information about digestion, see<br>Beginner's Guide to Biogas<br>http://www.adelaide.edu.au/biogas/<br>and the Biogas Wiki http://biogas.wikispaces.com/<br><br></div></div><br></div></body></html>