<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Garamond;
panose-1:2 2 4 4 3 3 1 1 8 3;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0mm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoPlainText, li.MsoPlainText, div.MsoPlainText
{mso-style-priority:99;
mso-style-link:"Plain Text Char";
margin:0mm;
margin-bottom:.0001pt;
font-size:10.5pt;
font-family:Consolas;}
p.MsoNoSpacing, li.MsoNoSpacing, div.MsoNoSpacing
{mso-style-priority:1;
margin-top:5.0pt;
margin-right:0mm;
margin-bottom:5.0pt;
margin-left:0mm;
mso-add-space:auto;
font-size:11.0pt;
font-family:"Arial","sans-serif";
color:#1F497D;}
p.MsoNoSpacingCxSpFirst, li.MsoNoSpacingCxSpFirst, div.MsoNoSpacingCxSpFirst
{mso-style-priority:1;
mso-style-type:export-only;
margin-top:5.0pt;
margin-right:0mm;
margin-bottom:0mm;
margin-left:0mm;
margin-bottom:.0001pt;
mso-add-space:auto;
font-size:11.0pt;
font-family:"Arial","sans-serif";
color:#1F497D;}
p.MsoNoSpacingCxSpMiddle, li.MsoNoSpacingCxSpMiddle, div.MsoNoSpacingCxSpMiddle
{mso-style-priority:1;
mso-style-type:export-only;
margin:0mm;
margin-bottom:.0001pt;
mso-add-space:auto;
font-size:11.0pt;
font-family:"Arial","sans-serif";
color:#1F497D;}
p.MsoNoSpacingCxSpLast, li.MsoNoSpacingCxSpLast, div.MsoNoSpacingCxSpLast
{mso-style-priority:1;
mso-style-type:export-only;
margin-top:0mm;
margin-right:0mm;
margin-bottom:5.0pt;
margin-left:0mm;
mso-add-space:auto;
font-size:11.0pt;
font-family:"Arial","sans-serif";
color:#1F497D;}
span.PlainTextChar
{mso-style-name:"Plain Text Char";
mso-style-priority:99;
mso-style-link:"Plain Text";
font-family:Consolas;}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dear Charlie<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 will report in detain a little later but we are doing lots of thermal efficiency tests that are just the sort of thing developers need. We have a protocol for you <i>HPT</i> 1.05<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 will sanitise a test report and send the meat of it so you can see. It is very helpful for detecting small changes in heat transfer efficiency (to within 1/2% or do).<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'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>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'><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><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> stoves-bounces@lists.bioenergylists.org [mailto:stoves-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Charlie Sellers<br><b>Sent:</b> Sunday, April 22, 2012 6:06 PM<br><b>To:</b> Discussion of biomass cooking stoves<br><b>Subject:</b> Re: [Stoves] Product list from Envirofit, and the EPTP testing protocol<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><div id="yiv2113820648yui_3_2_0_21_1335065833977916"><p class=MsoNormal style='background:white'><span style='font-family:"Garamond","serif";color:black'> <o:p></o:p></span></p></div><div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'>Crispin,</span><span style='font-family:"Garamond","serif";color:black'><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'>I chased down this protocol in case it would help me with my effort to see how to compare the performance of 2 stoves differentiated by only minor design changes (not predict how they will work in the field - though we keep hoping that lab testing results can be eventually correlated with field performance, once we have figured out how behavioral, educational, and cultural issues can be overcome):</span><span style='font-family:"Garamond","serif";color:black'><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='font-family:"Garamond","serif";color:black'><a href="http://cdm.unfccc.int/filestorage/I/Z/X/IZX36AE84V1K5NOYQBSU0TWRHD2FGL/Stove%20Emissions%20and%20Performance%20Test%20Protocol.pdf?t=MmZ8bTJ2MXYyfDALCoqJzxVI0hTcBZScIh54" target="_blank"><span style='font-family:"Calibri","sans-serif"'>http://cdm.unfccc.int/filestorage/I/Z/X/IZX36AE84V1K5NOYQBSU0TWRHD2FGL/Stove%20Emissions%20and%20Performance%20Test%20Protocol.pdf?t=MmZ8bTJ2MXYyfDALCoqJzxVI0hTcBZScIh54</span></a></span><span style='font-family:"Calibri","sans-serif";color:black'> </span><span style='font-family:"Garamond","serif";color:black'><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'>It might be considered a little obscure on the web - since if you search on the title ("Stove Manufacturers Emissions & Performance Test Protocol" - EPTP for short) you won't get much else besides this helpful presentation at NREL last fall:</span><span style='font-family:"Garamond","serif";color:black'><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Garamond","serif";color:black'><a href="http://www.irena.org/DocumentDownloads/events/IRENA_NREL_WORKSHOP/2-4_WILLSON_CACC_Final_Presentation_18_Nov_2011.pdf" target="_blank"><span style='font-family:"Calibri","sans-serif"'>http://www.irena.org/DocumentDownloads/events/IRENA_NREL_WORKSHOP/2-4_WILLSON_CACC_Final_Presentation_18_Nov_2011.pdf</span></a><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Garamond","serif";color:black'> <o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Garamond","serif";color:black'> </span><span style='font-family:"Calibri","sans-serif";color:black'>A supporting journal article cited is "Influence of testing parameters on biomass stove performance and development of an improved testing protocol", written by L'Orange et al at Colorado State University and published in the March 2012 issue of Energy for Sustainable Development: </span><span style='font-family:"Garamond","serif";color:black'><a href="http://www.sciencedirect.com/science/article/pii/S097308261100086X " target="_blank"><span style='font-family:"Calibri","sans-serif"'>http://www.sciencedirect.com/science/article/pii/S097308261100086X </span></a><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Garamond","serif";color:black'>and it is worth a read. </span><span style='font-family:"Calibri","sans-serif";color:black'>For those of you who are not yet familiar with it, Google Scholar is an <u>excellent</u> tool for ferreting out the, hopefully, highest quality technical information - <u>and</u> it has no superfluous information or ads, yet. I am not sure that I am allowed to attach a copy of it here - but the authors should be able to. Note that an older, but similarly oriented, journal article from India "Effects of selected parameters on performance and emission of biomass cookstoves" - was published in 2002 by Bhattacharya et all (Thailand), in the journal Biomass and Bioenergy (</span><span style='font-family:"Garamond","serif";color:black'><a href="http://www.sciencedirect.com/science/article/pii/S0961953402000624"><span style='font-family:"Calibri","sans-serif"'>http://www.sciencedirect.com/science/article/pii/S0961953402000624</span></a></span><span style='font-family:"Calibri","sans-serif";color:black'>).<br><br><br><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'>The EPTP seems for the moment to address some of my personal needs related to "quality control" - </span><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black;mso-fareast-language:EN-US'>The The EPTP seems for the moment to provide for some of my personal needs related to "quality control", one of the things that it was developed for - </span><span style='font-family:"Calibri","sans-serif";color:black'>hopefully reducing test-to-test, tester-to-tester, and lab-to-lab performance variations using ways that I am familiar with from the product development and manufacturing world (like the general Gauge R&R method </span><span style='font-family:"Garamond","serif";color:black'><a href="http://en.wikipedia.org/wiki/ANOVA_gauge_R%26R"><span style='font-family:"Calibri","sans-serif"'>http://en.wikipedia.org/wiki/ANOVA_gauge_R%26R</span></a></span><span style='font-family:"Calibri","sans-serif";color:black'>). Introducing a lid (they use a piece of foam floating on the surface, plus some other tweaks) addresses the point that few of us are in this to study the time dependent kinetics of water evaporation during the sometimes lengthy approach to boiling, and how to calculate the impact of a continuous decrease in water volume using a simple spreadsheet. Again, it is not a substitute for a properly conducted KPT for estimating field performance, and I look forward to the discussion of where/when it is appropriate for users on this list.</span><span style='font-family:"Garamond","serif";color:black'><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'>So... since our last discussion on this was about whether to use pot lids or not, and after you weighed in so heavily, I report that I have switched to a lidded method (and will try your heterogeneous approach as well). I owe those interested details on my own testing (presently still statistically inadequate - doing enough tests is very time consuming), comparing the WBT and variations on the EPTP for the structurally similar Envirofit and Ecozoom commercial stoves. One thing that I am seeing is that the two tests do not seem to produce results which are quite as similar (for me) as has been suggested, and of course I need additional testing using various fuels, etc. I am quite impressed with the ease of use and performance of both of these, and consider them a real step in the right direction for places where large volumes of imported stoves are appropriate. As I described last, one of my other interests is comparing the impacts of the thermal insulation material type on various stove performance measures in a lab-like setting, and that work is yielding some interesting results with implications for sometimes using local choices instead of unnecessarily importing that bulky component too. More as it develops.</span><span style='font-family:"Garamond","serif";color:black'><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'> </span><span style='font-family:"Garamond","serif";color:black'><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'>Charlie</span><span style='font-family:"Garamond","serif";color:black'><o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Garamond","serif";color:black'><o:p> </o:p></span></p></div></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Garamond","serif";color:black'> <o:p></o:p></span></p></div><div style='margin-bottom:10.0pt'><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'> <o:p></o:p></span></p></div></div></div></div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p></div></div></div></body></html>