<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Andrew and list:</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>1. I forgot to say that the fuel cell approach to generating electricity in a TLUD looks promising because a) it can be highly efficient (>50%), b) normally works with H2, but supposed to work with CO as well - and the TLUD pyrolysis gases have mostly these active constituents (already at the required high temperatures). We need a tinkerer with combined TLUD and electrical skills.</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>2. Re PV’s advantages you mention below - I agree. And the declining cost of cells, battery storage and LEDs will make it ever harder for TEGs to compete, it would seem. But two other options (besides the one above) come to mind as having a possible TLUD-electrical future:</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>a. Dean Still and Aprovecho developed a TLUD with the main flame chamber being glass so that wide area illumination was possible. Apparently didn’t receive good consumer approval (was small and probably didn’t meet cooling needs) and so was not continued. But for community outdoor lighting, it could be a cheap approach, since the salable char could make the cost go to/below zero.</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>(Aside: We haven’t mentioned that Dean and Sam Bentson’s fine presentation in the EPA-Winrock webinar on 18 May. Well worth listening to when it becomes available for repeat. See <a href="http://cleancookstoves.org/events/264.html" class="">http://cleancookstoves.org/events/264.html</a> and (soon?) <a href="http://cleancookstoves.org/resources/" class="">http://cleancookstoves.org/resources/</a>)</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>b. There is a (mostly forgotten) branch of PV called TPV (Thermal PV), in which cells are placed very close to an active flame. The usual max solar radiation near a kW/sqm can be exceeded - and of course one can solve the solar intermittency problem. See <a href="https://en.wikipedia.org/wiki/Thermophotovoltaic" class="">https://en.wikipedia.org/wiki/Thermophotovoltaic</a> for a rationale. Many others cites via google. Might make more sense with TLUDs than most because the char value could drop the operating cost to zero or less.</div><div class=""><br class=""></div><div class="">Ron</div><div class=""><br class=""></div><div class=""><br class=""></div><br class=""><div><blockquote type="cite" class=""><div class="">On May 22, 2016, at 3:50 AM, Andrew Heggie <<a href="mailto:aj.heggie@gmail.com" class="">aj.heggie@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">On 21 May 2016 at 23:47, Ronal W. Larson <<a href="mailto:rongretlarson@comcast.net" class="">rongretlarson@comcast.net</a>> wrote:<br class=""><blockquote type="cite" class="">Crispin and ccs<br class=""><br class="">I just sent a set of questions to Jock. Same requests for you.<br class=""><br class="">Is there a site to go see the Alex English design?<br class=""></blockquote><br class="">Yes I too love to see Alex' designs<br class=""><br class=""><br class=""><blockquote type="cite" class=""><br class="">One other way to generate electricity with TLUDs would seem to be using fuel<br class="">cells. The Oxygen sensors in all cars can possibly work - and some are<br class="">under $20.<br class=""></blockquote><br class="">The thing that strikes me about semiconductor pico electricity<br class="">generation is the photo voltaics give best bang for buck, TEGs seem to<br class="">be an order of magnitude more costly. Their advantage with a stove is<br class="">that they generate when the power is needed without requirement for<br class="">storage.<br class=""><br class="">AJH<br class=""><br class="">_______________________________________________<br class="">Stoves mailing list<br class=""><br class="">to Send a Message to the list, use the email address<br class=""><a href="mailto:stoves@lists.bioenergylists.org" class="">stoves@lists.bioenergylists.org</a><br class=""><br class="">to UNSUBSCRIBE or Change your List Settings use the web page<br class="">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org<br class=""><br class="">for more Biomass Cooking Stoves, News and Information see our web site:<br class="">http://stoves.bioenergylists.org/<br class=""><br class=""></div></div></blockquote></div><br class=""></body></html>