<div dir="ltr"><div><div><div><div>Thanks Roger!<br><br></div>I thoroughly enjoyed the video! Now I just need to figure out a way to taste the noodles...<br><br></div>Your message reminds me of that old slogan "One solution comes up every morning." <br><br></div>Cheers,<br></div>David<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jan 4, 2017 at 12:15 PM, Roger Samson <span dir="ltr"><<a href="mailto:rogerenroute@yahoo.ca" target="_blank">rogerenroute@yahoo.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
The Chinese have low cost solar cookers made from cast concrete with small mirrors glued on to them. There were about 300,000 of them installed in western China ( Gansu province) when I was working on rural development programs there about 12 years ago. At the time they were about $40. . The Chinese government was supporting the parabolic solar systems as well as $150 biogas cooking systems. The solar parabolics if I remember provided about 18% of household energy needs and mainly were used for boiling potatoes and pre-heating hot water for wheat/lentil noodles their freshly made main daily staple. The woks ran on biomass or biogas. The noodles were so delicious.<br>
<br>
See the 11 minute mark of this video to see how hot they got concentrated solar hitting the pot to make it glow.It was pretty impressive how well they worked. So its really only the sunbucket needed.<br>
<a href="https://www.youtube.com/watch?v=c0XWyASyyko" rel="noreferrer" target="_blank">https://www.youtube.com/watch?<wbr>v=c0XWyASyyko</a><br>
<br>
<br>
regards<br>
<br>
roger<br>
<br>
<br>
<br>
<br>
<br>
------------------------------<wbr>--------------<br>
<span class="">On Wed, 1/4/17, Paul Anderson <<a href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>> wrote:<br>
<br>
Subject: Re: [Stoves] Sun Buckets: off topic news, introduction<br>
</span> To: "Discussion of biomass cooking stoves" <<a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.<wbr>org</a>>, <a href="mailto:ambwat@gmail.com">ambwat@gmail.com</a><br>
Cc: "Salih Hamadto" <<a href="mailto:hamadtosa@hotmail.com">hamadtosa@hotmail.com</a>>, "Patricia Roberts" <<a href="mailto:Patty@pacificmillimeter.com">Patty@pacificmillimeter.com</a>>, "Alfred Hislop" <<a href="mailto:Al@pacificmillimeter.com">Al@pacificmillimeter.com</a>>, "Ken May" <<a href="mailto:mayekenneth74@centurylink.net">mayekenneth74@centurylink.net</a><wbr>>, "Steve Stevens" <<a href="mailto:oldbike2@comcast.net">oldbike2@comcast.net</a>><br>
Received: Wednesday, January 4, 2017, 12:14 PM<br>
<span class=""><br>
<br>
Ron and all,<br>
<br>
<br>
<br>
I am studying the limited info about the Sun Bucket, and<br>
finding<br>
enough to agree that it could well be compatible with<br>
TLUD stoves<br>
(and to a lesser extent with other biomass<br>
stove-types.). So it is<br>
not "off-topic" if, as Ron says, it can relate<br>
to biomass stoves.<br>
<br>
<br>
<br>
I doubt that it is only $50 if including a 1.5 meter<br>
solar dish.<br>
<br>
<br>
<br>
I will report back after I have direct contact with the<br>
company.<br>
<br>
<br>
<br>
Paul<br>
<br>
Doc / Dr TLUD<br>
/ Prof. Paul S. Anderson, PhD<br>
Email: <a href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a><br>
Skype: paultlud Phone: <a href="tel:%2B1-309-452-7072" value="+13094527072">+1-309-452-7072</a><br>
Website: <a href="http://www.drtlud.com" rel="noreferrer" target="_blank">www.drtlud.com</a><br>
</span> On 1/3/2017 7:30 PM,<br>
Ronal W. Larson<br>
<div><div class="h5"> wrote:<br>
<br>
<br>
<br>
David and list - and cc some solar<br>
cooking friends<br>
<br>
<br>
<br>
Congratulations<br>
on this modification of the usual solar cooker.<br>
And on the two<br>
awards that Sun Buckets has already won.<br>
<br>
<br>
<br>
It<br>
might seem you are on the wrong list - as we get<br>
little traffic<br>
re solar cookers - and our “biomass” address<br>
would suggest this<br>
is normally be the wrong place. But I see three<br>
connections<br>
(that I have mentioned recently to the ccs), that<br>
make this<br>
entirely appropriate for out stove list.<br>
<br>
<br>
<br>
a).<br>
There could be reasons to employ the same storage<br>
concept at a<br>
family (maybe neighborhood) level with any form of<br>
biomass<br>
stove. I think it would fit especially well with<br>
TLUD stoves -<br>
as they could be designed at a large (one full day<br>
of cooking)<br>
size - and one day’s cooking could be much less<br>
time consuming<br>
than at present. No solar involvement at all in<br>
approach a).<br>
<br>
<br>
<br>
b).<br>
There could be good reason for option a) (such<br>
as very high<br>
fuel costs) to also want to couple a fully biomass<br>
approach with<br>
(zero fuel cost ) solar. <br>
<br>
<br>
<br>
c).<br>
Every solar option needs a backup - and biomass<br>
is the usual<br>
choice (except in the USA).<br>
The<br>
backup need not make charcoal - but the solar<br>
cookers can never<br>
be carbon negative; TLUDs can make that happen.<br>
Which won’t<br>
happen normally with a liquid (LPG) etc.<br>
<br>
<br>
<br>
So<br>
I’d like to continue this dialog with anyone<br>
interested.<br>
Because of all the option a), b), c)<br>
possibilities, this<br>
dialog could remain on this list. I suggest we<br>
stay away from<br>
the solar-only topic you brought to us. And we can<br>
leave this<br>
list if a few think it is detracting from our<br>
biomass stove<br>
dialog.<br>
<br>
<br>
<br>
I<br>
was employed at what is now NREL in Golden Colorado<br>
and have<br>
several friends with extensive experience in high<br>
temperature<br>
thermal storage (even little myself). I’ve been a<br>
member of SCI<br>
on and off.<br>
<br>
<br>
<br>
My<br>
friend Dr. Salih Hamadto (in Khartoum Sudan) has<br>
sold many<br>
concentrators of the Scheffler variety - which I<br>
think might end<br>
up being a preferred approach - instead of<br>
paraboloids. All<br>
the ccs know about biochar - which I think has a<br>
much more<br>
natural fit with your nice idea than our rocket<br>
enthusiasts.<br>
<br>
<br>
<br>
Ron<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
On Jan 3, 2017, at<br>
12:51 PM, David Stein <<a href="mailto:ambwat@gmail.com">ambwat@gmail.com</a>><br>
wrote:<br>
<br>
<br>
<br>
<br>
Dear All,<br>
<br>
<br>
<br>
<br>
<br>
I am a newcomer to the Stoves list<br>
but I’ve<br>
spent some<br>
time in the household energy sector in<br>
developing<br>
Vanuatu which is where I met<br>
Nikhil.<br>
<br>
<br>
<br>
<br>
<br>
I am<br>
fascinated by solar cooking these<br>
days. <br>
There are many<br>
potential socio-economic and<br>
environmental benefits of solar cooking<br>
and they are<br>
all very seductive. Just<br>
thinking about fuel-free and<br>
emission-free cooking is<br>
intoxicating.<br>
<br>
<br>
<br>
<br>
<br>
However, it<br>
seems that it is difficult to<br>
achieve the potential benefits of solar<br>
cooking<br>
(especially in the developing<br>
world) largely because those that dwell<br>
in hot<br>
climates (which is where much of<br>
the developing world seems to be<br>
located) have<br>
developed lifestyles that<br>
minimize exposure to the sun whereas<br>
most methods of<br>
solar cooking require the<br>
cook to be out in the sun, often at<br>
times of the day<br>
that aren’t typical<br>
cooking times. These facts<br>
make the<br>
difficult task of changing the cooking<br>
habits of<br>
cooks even more<br>
challenging.<br>
<br>
<br>
<br>
<br>
<br>
But it appears<br>
as though the Sun Bucket <a href="http://www.sunbuckets.com/" rel="noreferrer" target="_blank">http://www.sunbuckets.com/</a> “cracks all of these<br>
nuts.” This amazing<br>
innovation is<br>
“charged” with the<br>
heat of sunshine and the heat is stored<br>
in a “sun<br>
bucket” (phase change<br>
“”battery”) where it can be used<br>
when (like in the<br>
evening or early morning)<br>
and where (like inside a kitchen) it is<br>
needed. <br>
It cooks as hot as cooking on<br>
fire and<br>
existing cooking pots and pans<br>
can be used so there is minimal need for<br>
changes in<br>
cooking behavior. It also<br>
seems very affordable. I<br>
guess it’s what they call<br>
transformational.<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
It looks as<br>
though a Sun Bucket should be a<br>
part of every integrated coking scheme<br>
(solar<br>
cooking when it's sunny, using an<br>
Improved Cook Stove when it's not,<br>
and maybe using a<br>
retained heat cooker with<br>
both) everywhere the sun shines in the<br>
developing<br>
world. <br>
I can hardly wait for<br>
the Sun Bucket to be<br>
unleashed to the world-wide market of<br>
cooks that<br>
could really use them.<br>
<br>
<br>
<br>
<br>
<br>
Best wishes<br>
for the coming year.<br>
<br>
<br>
David<br>
Stein<br>
<br>
<br>
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