<div dir="ltr"><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><font face="arial narrow, sans-serif">Thanks Nikhil, </font></div><div><font face="arial narrow, sans-serif"><br></font></div><div><font face="arial narrow, sans-serif">How do you mean by this <i>''</i></font><i>There is always a trade-off between growing the charcoal feedstock versus burning charcoal with higher efficiency''</i> can both not be realistically achieved on scale? We know of a few restaurants/BBQ joints here who do both. </div><div><b><br></b></div><div><b>Best, </b></div><div><b>Teddy </b></div><div><div style="font-size:small"><br></div></div><div><br></div><div><br></div><div><br><br><br></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Mar 8, 2019 at 5:20 AM Nikhil Desai <<a href="mailto:pienergy2008@gmail.com">pienergy2008@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Teddy: <br><br>Do you know carbon sequestration profiles of different tree species and crops? <br><br>How does one address the issue of PAHs as an interim product to CO2, which is good, versus direct emissions of PAHs, for which there is no GHG computation? <br><br>I suppose efficiencies are in some way linked to the shares of PAH and CO, CO2 in the combustion process, so that a higher-efficiency stove would produce fewer PAHs but greater CO2. If one were to address GHG-neutrality only in terms of CO2, this would seem to frustrate the desirable goal of more complete combustion. <br><br>There is always a trade-off between growing the charcoal feedstock versus burning charcoal with higher efficiency. And if a stove were selected on the basis of higher efficiency rating as well as lower CO2 emission rates, it is by no means certain that it would succeed in real circumstances. <br><br>Nikhil<br clear="all"><div><div dir="ltr" class="gmail-m_-152035673248080513gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><font face="georgia, serif">------------------------------------------------------------------------<br>Nikhil Desai</font></div><div><span style="font-family:georgia,serif;font-size:small">(US +1) 202 568 5831</span><font face="georgia, serif"><br><i>Skype: nikhildesai888</i><br></font><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Feb 7, 2019 at 12:48 AM Cookswell Jikos <<a href="mailto:cookswelljikos@gmail.com" target="_blank">cookswelljikos@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>Good morning all, </div><div><br></div><div>Being a big proponent of growing more of these types of indigenous trees for charcoal in Kenya (we include free seeds with each stove purchase) I am happy to see this report on the different emission levels from various types of charcoal. </div><div><br></div><div>How different emissions from charcoal would affect the taste of food is anyone's guess, but it does lend credence to stories I have heard of why chefs in the Middle East etc. insist on importing tons of illegal acacia charcoal from Somalia. </div><div><br></div><div>More tests on the dozens of other species of local trees that are preferred for firewood/charcoal would be most interesting to read if anyone has any that they could share. </div><div><br></div><div><i>''All the charcoal from the three tree species under study emitted similar types of PAHs but at significantly different concentrations. A. xanthophloea charcoal prepared by efficient pyrolysis emitted the least concentration of PAHs. Thus, according to this study, using charcoal produced from A. xanthophloea by efficient pyrolysis presents a better opportunity to reducing exposure from PAHs emit-ted from biomass fuels.''</i></div><div><br></div><div><a href="https://link.springer.com/epdf/10.1007/s13762-019-02220-x?author_access_token=XDpVhLZRgWpLPgeDkoTvCfe4RwlQNchNByi7wbcMAY4TAzk706nlQbkDAKP1sFLIg30j6XGmh3a8qNepBVgX9Ho3rnVR3Bwh6UKPAk0PXABQcXH3pMGCxPXZphBhoV3PlFv8BcLjbyaIt4xOVZKisw%3D%3D" target="_blank">https://link.springer.com/epdf/10.1007/s13762-019-02220-x?author_access_token=XDpVhLZRgWpLPgeDkoTvCfe4RwlQNchNByi7wbcMAY4TAzk706nlQbkDAKP1sFLIg30j6XGmh3a8qNepBVgX9Ho3rnVR3Bwh6UKPAk0PXABQcXH3pMGCxPXZphBhoV3PlFv8BcLjbyaIt4xOVZKisw%3D%3D</a><br></div><br clear="all"><div><div dir="ltr" class="gmail-m_-152035673248080513gmail-m_-309074688382069583gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><font face="arial narrow, sans-serif">Teddy Kinyanjui</font></div><div><font face="arial narrow, sans-serif">Sustainability Director</font></div><div><font face="arial narrow, sans-serif"><br></font></div><div><img src="https://lh3.googleusercontent.com/-3YUMG1TTODQ/Wh6o8gWfRmI/AAAAAAAAAyw/1bp5qqpvmwQwg5JXqL7hz-OLGSx5nSEXgCK8BGAs/s512/TK%2BEmail%2BLogo.jpg" width="200" height="100"><font face="arial narrow, sans-serif"><br></font><font face="arial narrow, sans-serif"><br></font></div><div><font face="arial narrow, sans-serif"> <a href="https://www.facebook.com/CookswellJikos" target="_blank"><img src="https://images2.imgbox.com/97/28/BgG0H6ZN_o.png"></a> <a href="https://www.instagram.com/cookswelljikos" target="_blank"><img src="https://images2.imgbox.com/54/7e/owicmXIG_o.png"></a> <a href="https://twitter.com/cookswelljikos?lang=en" target="_blank"><img src="https://images2.imgbox.com/64/b1/oh4tfzkH_o.png"></a><br></font></div><div><b><br></b></div><div><div style="font-size:small"><br></div></div><div><br></div><div><br></div><div><br><br><br></div></div></div></div></div></div></div></div></div></div></div>
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