[Stoves] Sun Buckets: off topic news, introduction
David Stein
ambwat at gmail.com
Wed Jan 4 16:53:51 CST 2017
Thanks Roger!
I thoroughly enjoyed the video! Now I just need to figure out a way to
taste the noodles...
Your message reminds me of that old slogan "One solution comes up every
morning."
Cheers,
David
On Wed, Jan 4, 2017 at 12:15 PM, Roger Samson <rogerenroute at yahoo.ca> wrote:
>
> 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.
>
> 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.
> https://www.youtube.com/watch?v=c0XWyASyyko
>
>
> regards
>
> roger
>
>
>
>
>
> --------------------------------------------
> On Wed, 1/4/17, Paul Anderson <psanders at ilstu.edu> wrote:
>
> Subject: Re: [Stoves] Sun Buckets: off topic news, introduction
> To: "Discussion of biomass cooking stoves" <stoves at lists.bioenergylists.
> org>, ambwat at gmail.com
> Cc: "Salih Hamadto" <hamadtosa at hotmail.com>, "Patricia Roberts" <
> Patty at pacificmillimeter.com>, "Alfred Hislop" <Al at pacificmillimeter.com>,
> "Ken May" <mayekenneth74 at centurylink.net>, "Steve Stevens" <
> oldbike2 at comcast.net>
> Received: Wednesday, January 4, 2017, 12:14 PM
>
>
> Ron and all,
>
>
>
> I am studying the limited info about the Sun Bucket, and
> finding
> enough to agree that it could well be compatible with
> TLUD stoves
> (and to a lesser extent with other biomass
> stove-types.). So it is
> not "off-topic" if, as Ron says, it can relate
> to biomass stoves.
>
>
>
> I doubt that it is only $50 if including a 1.5 meter
> solar dish.
>
>
>
> I will report back after I have direct contact with the
> company.
>
>
>
> Paul
>
> Doc / Dr TLUD
> / Prof. Paul S. Anderson, PhD
> Email: psanders at ilstu.edu
> Skype: paultlud Phone: +1-309-452-7072
> Website: www.drtlud.com
> On 1/3/2017 7:30 PM,
> Ronal W. Larson
> wrote:
>
>
>
> David and list - and cc some solar
> cooking friends
>
>
>
> Congratulations
> on this modification of the usual solar cooker.
> And on the two
> awards that Sun Buckets has already won.
>
>
>
> It
> might seem you are on the wrong list - as we get
> little traffic
> re solar cookers - and our “biomass” address
> would suggest this
> is normally be the wrong place. But I see three
> connections
> (that I have mentioned recently to the ccs), that
> make this
> entirely appropriate for out stove list.
>
>
>
> a).
> There could be reasons to employ the same storage
> concept at a
> family (maybe neighborhood) level with any form of
> biomass
> stove. I think it would fit especially well with
> TLUD stoves -
> as they could be designed at a large (one full day
> of cooking)
> size - and one day’s cooking could be much less
> time consuming
> than at present. No solar involvement at all in
> approach a).
>
>
>
> b).
> There could be good reason for option a) (such
> as very high
> fuel costs) to also want to couple a fully biomass
> approach with
> (zero fuel cost ) solar.
>
>
>
> c).
> Every solar option needs a backup - and biomass
> is the usual
> choice (except in the USA).
> The
> backup need not make charcoal - but the solar
> cookers can never
> be carbon negative; TLUDs can make that happen.
> Which won’t
> happen normally with a liquid (LPG) etc.
>
>
>
> So
> I’d like to continue this dialog with anyone
> interested.
> Because of all the option a), b), c)
> possibilities, this
> dialog could remain on this list. I suggest we
> stay away from
> the solar-only topic you brought to us. And we can
> leave this
> list if a few think it is detracting from our
> biomass stove
> dialog.
>
>
>
> I
> was employed at what is now NREL in Golden Colorado
> and have
> several friends with extensive experience in high
> temperature
> thermal storage (even little myself). I’ve been a
> member of SCI
> on and off.
>
>
>
> My
> friend Dr. Salih Hamadto (in Khartoum Sudan) has
> sold many
> concentrators of the Scheffler variety - which I
> think might end
> up being a preferred approach - instead of
> paraboloids. All
> the ccs know about biochar - which I think has a
> much more
> natural fit with your nice idea than our rocket
> enthusiasts.
>
>
>
> Ron
>
>
>
>
>
>
>
>
>
>
>
>
>
> On Jan 3, 2017, at
> 12:51 PM, David Stein <ambwat at gmail.com>
> wrote:
>
>
>
>
> Dear All,
>
>
>
>
>
> I am a newcomer to the Stoves list
> but I’ve
> spent some
> time in the household energy sector in
> developing
> Vanuatu which is where I met
> Nikhil.
>
>
>
>
>
> I am
> fascinated by solar cooking these
> days.
> There are many
> potential socio-economic and
> environmental benefits of solar cooking
> and they are
> all very seductive. Just
> thinking about fuel-free and
> emission-free cooking is
> intoxicating.
>
>
>
>
>
> However, it
> seems that it is difficult to
> achieve the potential benefits of solar
> cooking
> (especially in the developing
> world) largely because those that dwell
> in hot
> climates (which is where much of
> the developing world seems to be
> located) have
> developed lifestyles that
> minimize exposure to the sun whereas
> most methods of
> solar cooking require the
> cook to be out in the sun, often at
> times of the day
> that aren’t typical
> cooking times. These facts
> make the
> difficult task of changing the cooking
> habits of
> cooks even more
> challenging.
>
>
>
>
>
> But it appears
> as though the Sun Bucket http://www.sunbuckets.com/ “cracks all of these
> nuts.” This amazing
> innovation is
> “charged” with the
> heat of sunshine and the heat is stored
> in a “sun
> bucket” (phase change
> “”battery”) where it can be used
> when (like in the
> evening or early morning)
> and where (like inside a kitchen) it is
> needed.
> It cooks as hot as cooking on
> fire and
> existing cooking pots and pans
> can be used so there is minimal need for
> changes in
> cooking behavior. It also
> seems very affordable. I
> guess it’s what they call
> transformational.
>
>
>
>
>
>
>
> It looks as
> though a Sun Bucket should be a
> part of every integrated coking scheme
> (solar
> cooking when it's sunny, using an
> Improved Cook Stove when it's not,
> and maybe using a
> retained heat cooker with
> both) everywhere the sun shines in the
> developing
> world.
> I can hardly wait for
> the Sun Bucket to be
> unleashed to the world-wide market of
> cooks that
> could really use them.
>
>
>
>
>
> Best wishes
> for the coming year.
>
>
> David
> Stein
>
>
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