<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">List:</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space: pre;"> </span>1.. This is the start of a new thread involving Joshua Guinto. He was mentioned in a separate (just sent) response to Rok Oblak who worked with Joshua about 10-12 years ago on stoves using briquettes. </div><div class=""><span class="Apple-tab-span" style="white-space: pre;"> </span></div><div class=""><span class="Apple-tab-span" style="white-space: pre;"> </span>2. I said in that Rok email:</div><div class=""> "<i class="">There were nice tributes to Joshua Guinto and his work with and extensions of the Rocket toward char-making and biochar. Like you, I think Jed is the best artist in the whole stove world. I was especially impressed at his 2013 paper (new to me) which couples to your work. I include him to get an update on that very advanced 2013 paper found at: </i></div><div class=""><i class=""><span class="Apple-tab-span" style="white-space:pre"> </span> <a href="https://holeyroket.files.wordpress.com/2013/05/the-holey-roket-stove-and-biochar-project.pdf" class="">https://holeyroket.files.wordpress.com/2013/05/the-holey-roket-stove-and-biochar-project.pdf</a></i></div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space: pre;"> </span>3. Josh: Can you tell us what happened to that stove - and anything else happening with your company.</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>And stoves in the Philippines.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>4. Your above paper cites another stove design paper which greatly impressed you (and me and was new to me) - and I don’t believe has been seen much. It does not seem to have been in a peer-reviewed technical journal (but should have been ; this is a first rate stove analysis)</div><span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://www.build-a-gasifier.com/PDF/BiocharStovesInnovation2011.pdf" class="">http://www.build-a-gasifier.com/PDF/BiocharStovesInnovation2011.pdf</a>, First author Sarah Carter</div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>My next message will be about that paper (keeping separate to keep the confusion down. Please don’t use this thread to talk about the Carter paper)</div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>5. Appendix 2 from Joshua’s paper says this about the Carter paper: (Repeated to show both Joshua’s thinking (which are all the right things).and a small part of what the Carter paper discussies (in 72 pp).</div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><b class=""><i class="">ANNEX 2</i></b></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class="">The following are excerpts from the Biochar Stoves: an Innovation Studies
Perspective. Sarah Carter and Dr. Simon Shackley, UK Biochar Research Centre (UKBRC),
School of GeoSciences, University of Edinburgh. 8th April 2011.</i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""> More specific feedback about the stoves included the following points: </i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class="">• in some cases, the height of the stoves was inconvenient, e.g. for Indian women who
prefer to sit on the ground to cook (the Anila is the tallest of the test stoves);</i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""> • there was no easy way to add more wood into the stoves while the pot is on, since the
gap between the pot and the stove restricts the size of wood which it is possible to add in;</i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""> • this ‘batch’ approach compares unfavourably with the ‘continuous’ fuel feed of other
conventional and improved stoves since the user does not know precisely how much fuel
is required prior to the cooking process and can end up using toolittle or too much fuel,
the first introducing inconvenience and time delay and the second ending up waste fuel
(and increasing biomass extraction and wasting
time in collecting fuel);</i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class="">• gasification stoves require reasonably small and uniform pieces of biomass, hence limit
the use of certain feedstocks such as larger sticks, reducing overall fuel use flexibility;</i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""> • the ability to alter the intensity of the flame was limited, so reducing the flexibility
that cooks value; </i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class="">• it was difficult to remove the ash / charcoal from the stove without turning the stove
over, so a way of emptying the stove could be made (which is achieved in some stove
designs by having a trap-door arrangement, [11]);</i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""> • those with large families struggled to cook effectively with large pots on these particular
stoves; </i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class="">• the two lids of the Champion TLUD made it more difficult to handle, so these could be
joined together; </i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class="">• the EN stove needed a draft and a grate – alternatively, larger holes in the fuel chamber
would help to keep the stoves lit. </i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class="">For those that would buy the stoves, the price they suggested they would be willing to pay
for the stove ranged from 2.22 USD and 25 USD, with the averages given in Table 7. </i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class=""><br class=""></i></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><i class="">In summary, while the stoves tested do appear to meet some of the objectives of an
improved stove (reduced fuel consumption, reduced smoke production), the users also
noted some limitations in their functionality compared to their conventional primary
stove. Better flame modulation, fuel flexibility and ease of fuel addition can all make
women’s cooking </i>tasks much easier on a daily basis and the ‘improved’ gasification cookstoves turn out not to be as adequate as conventional stoves in these regards.</div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Ron</div></div></div></body></html>