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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'>I skimmed through the references of the article after I saw the numbers they cited, and recognized a lot of the references as pretty old. Like Crispin said, there has been a lot of progress made in the last few years.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Kind regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Erin Rasmussen<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>erin@trmiles.com<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><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><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>Cookswell Jikos<br><b>Sent:</b> Tuesday, July 01, 2014 7:40 AM<br><b>To:</b> Discussion of biomass cooking stoves<br><b>Subject:</b> Re: [Stoves] Key differences of performance test protocols for household biomass cookstoves<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Dear Crispin - thank you for sharing this, <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Have you (or anyone else) by any chance read this article <a href="http://www.lowtechmagazine.com/2014/06/thermal-efficiency-cooking-stoves.html">http://www.lowtechmagazine.com/2014/06/thermal-efficiency-cooking-stoves.html</a> <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>It a real mind turner to say the least.... I would be very interested to hear some of your thoughts on this matter. To quote one of the opening paragraphs - <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><i>''</i><i><span style='font-size:10.5pt;font-family:"Helvetica","sans-serif";color:#444444'>In fact, an electric cooking stove is only half as efficient as a well-tended open fire, while a gas hob is only half as effective as a biomass rocket stove. And even though indoor air pollution is less of an issue with modern cooking stoves, research indicates that pollution levels in western kitchens can be surprisingly high.'' </span></i><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The author then follows that article up with this one - <a href="http://www.lowtechmagazine.com/2014/07/cooking-pot-insulation-key-to-sustainable-cooking.html">http://www.lowtechmagazine.com/2014/07/cooking-pot-insulation-key-to-sustainable-cooking.html</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>What do you think? I think I need to double my forestry efforts. <br><br>Kind Regards, <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Teddy <o:p></o:p></p></div></div><div><p class=MsoNormal><br clear=all><o:p></o:p></p><div><div><div><p class=MsoNormal><b>Cookswell Jikos</b><br><a href="http://www.cookswell.co.ke" target="_blank">www.cookswell.co.ke</a><o:p></o:p></p></div><div><p class=MsoNormal><a href="http://www.facebook.com/CookswellJikos" target="_blank">www.facebook.com/CookswellJikos</a><o:p></o:p></p></div><div><p class=MsoNormal><a href="http://www.kenyacharcoal.blogspot.com" target="_blank">www.kenyacharcoal.blogspot.com</a><o:p></o:p></p></div><div><p class=MsoNormal>Mobile: +254 700 380 009 <o:p></o:p></p></div><div><p class=MsoNormal>Mobile: +254 700 905 913<o:p></o:p></p></div><div><p class=MsoNormal>P.O. Box 1433, Nairobi 00606, Kenya<o:p></o:p></p></div><div><p class=MsoNormal><img border=0 width=71 height=96 id="_x0000_i1025" src="https://lh5.googleusercontent.com/-mFnK50B4oS8/UUrgJle8z9I/AAAAAAAAB_o/OUjLd7wrKPg/s133/Cookswell+Logo.PNG"><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-family:"Tms Rmn","serif";color:green'>Save trees - think twice before printing</span><span style='font-size:7.5pt;font-family:"Tms Rmn","serif";color:green'>.</span><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><br><br><o:p></o:p></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On Mon, Jun 30, 2014 at 12:27 PM, Crispin Pemberton-Pigott <<a href="mailto:crispinpigott@outlook.com" target="_blank">crispinpigott@outlook.com</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>Dear Testers<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>Please see the paper “Key differences of performance test protocols for household biomass cookstoves” by Zhang, Y <i>et al</i> at<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA><a href="http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6827753&queryText%3DKey+differences" target="_blank">http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6827753&queryText%3DKey+differences</a><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>Abstract<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>“In this study, different ways of testing household biomass cooking stoves are compared and analyzed. The differences between test methods relate to the stove operation and data analysis methods, the fueling procedure, the end point selection, the choice of metrics and others factors. The influences of these differences were analyzed by using an induction heater. The results show the use of a pot lid or not, and the selection of the end point of the test have the greatest influence on the rated performance. Consequently test results provided by laboratories using different test methods will place the same stove-plus-fuel combination on significantly different performance ‘tiers’. Also the results show some metrics in popular tests should be reviewed. Some recommendations are provided for improving the accuracy and repeatability of test procedures and select metrics are defined for greater clarity.”<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>The comment “some metrics in popular tests should be reviewed” is a polite way of saying they are not valid. This is a major issue when making performance comparisons. If the metric itself is not valid then the comparisons of it between products is not meaningful. One cannot trade money or products on the result.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>From the conclusions:<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> <o:p></o:p></span></p><p style='mso-margin-top-alt:5.0pt;margin-right:0in;margin-bottom:10.0pt;margin-left:.5in;text-autospace:none'>b)<span style='font-size:7.0pt'> </span>Some metrics still need to be revisited, even if they are generally agreed within the “stove enthusiast” community. National or international compulsory regulation of stove products as envisaged by ISO TC 285 must be based on credible science. The point of testing is to provide useful information. Selected indicators that meet specific needs must first be agreed and validated, and then a test method or methods developed to collect the information necessary to deliver product ratings that can be widely compared and accepted by the public.<span lang=EN-CA><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>The paper is accessible free through academic services. <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA>Regards<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA style='color:#888888'>Crispin<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-CA style='color:#888888'> <o:p></o:p></span></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><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://stoves.bioenergylists.org/" target="_blank">http://stoves.bioenergylists.org/</a><br><br><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>