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<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">Dear Nikhil</div>
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<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">At the moment I am not convinced that the technology is right. These TEGs work but the operating temperatures have to come up two or three hundred degrees. </div>
<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%"><br>
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<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">I met a guy from Pakistan at the CAU conference in October who is working on harvesting low temperature waste heat and making enough electricity to run an air conditioner. He is talking
about heat below 150 C and ambient of maybe 40. </div>
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<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">It is an absorption cycle. New materials are important. </div>
<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%"><br>
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<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">The Stirling engine is cool but fantastically expensive But at least it can run with a 700 C input temperature. </div>
<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%"><br>
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<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">As for commercial applications I see the first decent output ones, above 1 kW, a being installed in water heating systems because the heat sink is so large and cool. They can safely
be run to double their design temperature on the input surface. </div>
<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%"><br>
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<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">At present, at $ a Watt, are you willing to spend $2k on a 1 kW generator that runs 24/7 for only 5 to 9 months a year? It looks like options are needed. Perhaps LPG in summer. Makes
sense. </div>
<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%"><br>
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<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">As for future technologies I expect thermoacoustics will rule the roost once they are mass produced. The efficiencies run to 40% I hear. Perhaps Steve Garrett can comment. His main
mechanic at Los Alamos concluded that using existing technologies it was best to use rotating Stirling engines, not resonant devices, if the power is low. </div>
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<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">We need new inventions on that front. If each Ger stove working in Ulaanbaatar had a 1 kW generator it would produce more power their big station number 4. </div>
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<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">Regards </div>
<div name="BB10" id="BB10_response_div_BBPPID" dir="auto" style="width:100%">Crispin </div>
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<div id="from"><b>From:</b> pienergy2008@gmail.com</div>
<div id="sent"><b>Sent:</b> January 3, 2019 8:23 PM</div>
<div id="to"><b>To:</b> crispinpigott@outlook.com</div>
<div id="reply_to"><b>Reply to:</b> ndesai@alum.mit.edu</div>
<div id="cc"><b>Cc:</b> stoves@lists.bioenergylists.org</div>
<div id="subject"><b>Subject:</b> Re: [Stoves] From the 4th Woodstove design challenge</div>
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<div dir="ltr">Crispin:<br>
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Y..a..w..n. <br>
<br>
I do not plan to enjoy a premature death, but my tentative date guess for the economics of mass market delivery and service for such products to household users without significant space and water heating demands is that 2034 is the earliest. <br>
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Nothing better to do? <br>
<br>
Nikhil<br>
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<div dir="ltr">On Thu, Jan 3, 2019 at 10:29 AM Crispin Pemberton-Pigott <<a href="mailto:crispinpigott@outlook.com">crispinpigott@outlook.com</a>> wrote:<br>
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<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex; border-left:1px solid rgb(204,204,204); padding-left:1ex">
NY and Canadian companies win technology challenge to automate the wood stove<<a href="https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fr20.rs6.net%2Ftn.jsp%3Ff%3D001Yqy8TxF8iiwWFw3TFYxjhKa9eZs8eReeaqJD4CSJCe_ZaVJNhWfCL1t05r1BY_4G4WpO7JWBHerKDI-OU9-gH1eBGm0-1dj5XbjMK66UOlNbbf4OupJkF76Fp97EDO8LAGpX3cSv4DbSAE_ElTDOTGKnMufjTyxmXVAfyO7BtyILVHdsYl1aBv8qSxb89LAenjiEL_XLfEokCPCmMpi9BFZvGn5-Jobb%26c%3DZb1jHPv7ywEJrDdjhEsaJbygaeUffV4FUt3-ZQCcE0EaV6ZJ2A_JwQ%3D%3D%26ch%3DCtpoGXRbkxExKO77uT8rUUD12uBw56I_RuMe9V2lFHrXS2G_TynEvw%3D%3D&data=02%7C01%7C%7C72da048f84444e914ff608d671e34cb3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636821618382680867&sdata=BlGZCsLol5KBDWlgl5LaAaET6Ds3jvgWqosoM2SMVcI%3D&reserved=0" originalsrc="http://r20.rs6.net/tn.jsp?f=001Yqy8TxF8iiwWFw3TFYxjhKa9eZs8eReeaqJD4CSJCe_ZaVJNhWfCL1t05r1BY_4G4WpO7JWBHerKDI-OU9-gH1eBGm0-1dj5XbjMK66UOlNbbf4OupJkF76Fp97EDO8LAGpX3cSv4DbSAE_ElTDOTGKnMufjTyxmXVAfyO7BtyILVHdsYl1aBv8qSxb89LAenjiEL_XLfEokCPCmMpi9BFZvGn5-Jobb&c=Zb1jHPv7ywEJrDdjhEsaJbygaeUffV4FUt3-ZQCcE0EaV6ZJ2A_JwQ==&ch=CtpoGXRbkxExKO77uT8rUUD12uBw56I_RuMe9V2lFHrXS2G_TynEvw==" shash="yDPM9LljMAa1U1zUYKRvRXVbJmHYPONxK1Hnwq/JqM1NnXJsaW2pONUR+fp8rQV68pR6/eOwPnKjI1cYWpdkSinE5/0aDSPKXM6zAhNMz/QNicLVBDwHqto8ZAd6KlGJjRlEodLDh8n+dDayZlrlI6/xu4N1gZC+0RJxePc2MKk=" rel="noreferrer" target="_blank">https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fr20.rs6.net%2Ftn.jsp%3Ff%3D001Yqy8TxF8iiwWFw3TFYxjhKa9eZs8eReeaqJD4CSJCe_ZaVJNhWfCL1t05r1BY_4G4WpO7JWBHerKDI-OU9-gH1eBGm0-1dj5XbjMK66UOlNbbf4OupJkF76Fp97EDO8LAGpX3cSv4DbSAE_ElTDOTGKnMufjTyxmXVAfyO7BtyILVHdsYl1aBv8qSxb89LAenjiEL_XLfEokCPCmMpi9BFZvGn5-Jobb%26c%3DZb1jHPv7ywEJrDdjhEsaJbygaeUffV4FUt3-ZQCcE0EaV6ZJ2A_JwQ%3D%3D%26ch%3DCtpoGXRbkxExKO77uT8rUUD12uBw56I_RuMe9V2lFHrXS2G_TynEvw%3D%3D&data=02%7C01%7C%7Cdb189a3a06a74a8c832f08d671896e4c%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636821232404499483&sdata=QS7z5%2F8cszL2F35Cxwmpaov5dQPwIaXFYgBycig9U8c%3D&reserved=0</a>><br>
Manually operated wood stoves are extremely common throughout the northern US, Canada and Europe but no one has yet popularized a solution to prevent them from emitting excessive smoke in the hands of operators.<br>
<br>
The final tally: how much electricity can a wood stove make?<<a href="https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fr20.rs6.net%2Ftn.jsp%3Ff%3D001Yqy8TxF8iiwWFw3TFYxjhKa9eZs8eReeaqJD4CSJCe_ZaVJNhWfCL1t05r1BY_4GD_gmhDEtlK-Euuu-xG2sR8-9yU39Gt2swbbJXSqCRXWRdTJauGsmA55vcQFG8l4o56KDIrX1S-_WPhnI35gSl5vzB9qtzAXG-pAke_MoPD_GStrrMKjXfWIQYJ9N4TVJM6L6ltONf9Hv3-6vqgbaoA5pywyNutpLS8IaX5-Zyes%3D%26c%3DZb1jHPv7ywEJrDdjhEsaJbygaeUffV4FUt3-ZQCcE0EaV6ZJ2A_JwQ%3D%3D%26ch%3DCtpoGXRbkxExKO77uT8rUUD12uBw56I_RuMe9V2lFHrXS2G_TynEvw%3D%3D&data=02%7C01%7C%7C72da048f84444e914ff608d671e34cb3%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636821618382680867&sdata=eiQEO4224VkTNsMRkRZzsN6Rrx7z%2BQsBnvafxtol0i4%3D&reserved=0" originalsrc="http://r20.rs6.net/tn.jsp?f=001Yqy8TxF8iiwWFw3TFYxjhKa9eZs8eReeaqJD4CSJCe_ZaVJNhWfCL1t05r1BY_4GD_gmhDEtlK-Euuu-xG2sR8-9yU39Gt2swbbJXSqCRXWRdTJauGsmA55vcQFG8l4o56KDIrX1S-_WPhnI35gSl5vzB9qtzAXG-pAke_MoPD_GStrrMKjXfWIQYJ9N4TVJM6L6ltONf9Hv3-6vqgbaoA5pywyNutpLS8IaX5-Zyes=&c=Zb1jHPv7ywEJrDdjhEsaJbygaeUffV4FUt3-ZQCcE0EaV6ZJ2A_JwQ==&ch=CtpoGXRbkxExKO77uT8rUUD12uBw56I_RuMe9V2lFHrXS2G_TynEvw==" shash="YhKiv+k4ruSPpL8qzGQNoGi3p5KaE5VXE0dM5r/PeAErvqDG4jYaulFFZoIdmycyQGqq+G2OcKElQFtTbJgG1tFByP/ySnivB86kXdz7u1CBY4Wb2NqsCK6RE7U6MnGH9P9Sgulzae3eBP/Z7BpU2d5ZOUG8B2GttKSmfhsSSec=" rel="noreferrer" target="_blank">https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fr20.rs6.net%2Ftn.jsp%3Ff%3D001Yqy8TxF8iiwWFw3TFYxjhKa9eZs8eReeaqJD4CSJCe_ZaVJNhWfCL1t05r1BY_4GD_gmhDEtlK-Euuu-xG2sR8-9yU39Gt2swbbJXSqCRXWRdTJauGsmA55vcQFG8l4o56KDIrX1S-_WPhnI35gSl5vzB9qtzAXG-pAke_MoPD_GStrrMKjXfWIQYJ9N4TVJM6L6ltONf9Hv3-6vqgbaoA5pywyNutpLS8IaX5-Zyes%3D%26c%3DZb1jHPv7ywEJrDdjhEsaJbygaeUffV4FUt3-ZQCcE0EaV6ZJ2A_JwQ%3D%3D%26ch%3DCtpoGXRbkxExKO77uT8rUUD12uBw56I_RuMe9V2lFHrXS2G_TynEvw%3D%3D&data=02%7C01%7C%7Cdb189a3a06a74a8c832f08d671896e4c%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636821232404499483&sdata=esQDmqX0mKCNCWeNJkDtFHcfrD66Fsy2iNbHOBE%2B13Q%3D&reserved=0</a>><br>
The highest electric output was 268 watts, by a German designed stove that could be combined with solar panels. Others produced less than 100, enough to power what they are designed for - lights bulbs and cell phone chargers. Output should increase each year.
And then there is also Okofen's Stirling engine, that helped charge a Tesla.<br>
<br>
These are posted in the Alliance for Green Heat's Newsletter<br>
<br>
Regards<br>
Crispin<br>
<br>
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