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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-ZA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Unfortunately the reference is behind a paywall.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Prof Philip Lloyd<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Energy Institute, CPUT<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>SARETEC, Sachs Circle<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Bellville<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Tel 021 959 4323<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Cell 083 441 5247<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>PA Nadia 021 959 4330<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> Stoves [mailto:stoves-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Paul Anderson<br><b>Sent:</b> Friday, March 18, 2016 3:22 AM<br><b>To:</b> stove@lists.berkeley.edu; Stoves and biofuels network<br><b>Subject:</b> Re: [Stoves] [stove] Comparison of stove testing procedures<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Stovers,<br><br>Below is the abstract of a significant comparative study done in China. We thank Kirk Smith and his Stove list (different from StoveS) for the information.<br><br>Spoiler alert: Here is the punch line from the abstract: <o:p></o:p></p><p class=MsoNormal><span style='font-size:14.0pt'>Statistically significant differences</span> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none'><span style='font-size:14.0pt'>between the two [China and Internatonal WBT] protocols indicate the need for further efforts in emission tests and methodology development</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt'>before the release of a well-accepted international testing protocol.</span><o:p></o:p></p><p class=MsoNormal><br>Yes. Should we be surprised. It seems that some entities in the international leadership of clean cookstoves might be pushing for one test without sufficient attention to alternative testing methods.<br><br>Note (in abstract) that: <o:p></o:p></p><p class=MsoNormal><span style='font-size:14.0pt'>With longer burning duration and higher</span> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none'><span style='font-size:14.0pt'>power, the Chinese WBT had statistically higher efficiencies, gas temperature, and lower pollutant emissions</span><o:p></o:p></p><p class=MsoNormal><br>Sure!!! Change the duration and power, expect different test results!!! <br><br>What is clear to me is that there should never be only one set of tests. People around the world have very different ways of cooking. High power in China, plancha stoves in Central America, two-arm cooking of thick foods in parts of Africa, long-simmering bean-meals vs. quick boil of rice meals, and on and on. The people we are trying to serve want solutions that are appropriate for their circumstances. <br><br>Observation: There seems to be a slow-down in the seeking of stove testing at the major testing centers that have equipment. I can be shown to be incorrect if any testing centers would give us some statistics of numbers and types of tests that are being requested.<br><br>Of course I like the importance of emissions testing because the TLUDs and other micro-gasifiers consistently give superior results. But most funding in the past has gone to less-qualified stoves. <br><br>Paul<br><br><o:p></o:p></p><pre>Doc / Dr TLUD / Prof. Paul S. Anderson, PhD<o:p></o:p></pre><pre>Email: <a href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a><o:p></o:p></pre><pre>Skype: paultlud Phone: +1-309-452-7072<o:p></o:p></pre><pre>Website: <a href="http://www.drtlud.com">www.drtlud.com</a><o:p></o:p></pre><div><p class=MsoNormal>On 3/17/2016 1:08 PM, Kirk R. Smith wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>Can be downloaded from the website below/k</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:13.5pt;font-family:AdvTT5235d5a9'> </span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:13.5pt;font-family:AdvTT5235d5a9'>Ef</span><span style='font-size:13.5pt;font-family:AdvTT5235d5a9+fb'>fi</span><span style='font-size:13.5pt;font-family:AdvTT5235d5a9'>ciencies and pollutant emissions from forced-draft biomass-pellet semi-gasi</span><span style='font-size:13.5pt;font-family:AdvTT5235d5a9+fb'>fi</span><span style='font-size:13.5pt;font-family:AdvTT5235d5a9'>er stoves: Comparison of International and Chinese water boiling test protocols</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>Yuanchen Chen, Guofeng Shen, Shu Su, Wei Du, Yibo Huangfu, Guangqing Liu, Xilong Wang, Baoshan Xing, Kirk R. Smith, Shu Tao</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:14.0pt;color:blue'>Energy for Sustainable Development 32 (2016) 22–30</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:14.0pt'> </span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>Ab s t r a c t</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>Biomass fuels are widely combusted in rural China, producing numerous air pollutants with great adverse</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>impacts on human health. Some improved cookstoves and pellet fuels have been promoted. To evaluate the</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>performance of pellet-gasifier stoves, efficiencies and pollutant emissions were measured following International</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>and Chinese water boiling tests (WBTs). Compared with traditional stoves and unprocessed biomass fuels,</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>increased efficiencies and lower emissions of pollutants including carbon monoxide (CO), particulate matter</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>(PM), parent and derivative polycyclic aromatic hydrocarbons (PAHs) were revealed for pellet-gasifier stoves.</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>However, the calculated emission rates (ERs) of CO and PM2.5 cannot meet the ER targets recently suggested</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>by WHO indoor air quality guidelines (IAQGs). Better control of air mixing ratio and gross flow rates of primary</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>and secondary air supply greatly reduced emissions and increased efficiencies. Differences among testing protocols</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>are the key factors affecting the evaluation of stove performance. With longer burning duration and higher</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>power, the Chinese WBT had statistically higher efficiencies, gas temperature, and lower pollutant emissions</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>(p b 0.10) compared to those obtained through the International WBT. Statistically significant differences</span><o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:14.0pt'>between the two protocols indicate the need for further efforts in emission tests and methodology development</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:14.0pt'>before the release of a well-accepted international testing protocol</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:14.0pt'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:14.0pt'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:14.0pt'>---------------------------<br></span>Kirk R. Smith, MPH, PhD<br>Professor of Global Environmental Health<o:p></o:p></p><p class=MsoNormal>Chair, Graduate Group in Environmental Health Sciences<br>Director of the Global Health and Environment Program<br>School of Public Health<br>747 University Hall<br>University of California<br>Berkeley, California, 94720-7360<br>phone 1-510-643-0793; fax 642-5815<br><a href="mailto:krksmith@berkeley.edu">krksmith@berkeley.edu</a><br><a href="http://www.kirkrsmith.org/">http://www.kirkrsmith.org/</a><br><br><br><o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br><br><br><o:p></o:p></span></p><pre>To unsubscribe from this list go to:<o:p></o:p></pre><pre><a href="https://calmail.berkeley.edu/manage/list/reminder/stove@lists.berkeley.edu">https://calmail.berkeley.edu/manage/list/reminder/stove@lists.berkeley.edu</a><o:p></o:p></pre></blockquote><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p></div></body></html>