[Stoves] Sun Buckets: off topic news, introduction

Tue Jan 3 23:48:50 CST 2017

Stephen, list and ccs

	1.  I remember reading quite recently on your showing pumped , micro-hydro storage was cheaper than batteries.  Nice work!

	2.  Agreed that cost of the phase change package may be a killer - but I can conceive of time savings being enough of a difference.  If time is important, then TLUDs will win out.

Ron

> On Jan 3, 2017, at 9:17 PM, Stephen Joseph <joey.stephen at gmail.com> wrote:
> 
> Dear Ron and David
> 
> Storage cokers are great.  We worked on a micro-hydro version in Nepal which was well accepted.  I like the idea of integration with TLUD.  I am wondering how much the phase change module is if mass produced as this will determine if people adopt it unless someone is prepared to subsidize.
> 
> Regards
> Stephen
> 
> On Wed, Jan 4, 2017 at 12:30 PM, Ronal W. Larson <rongretlarson at comcast.net <mailto:rongretlarson at comcast.net>> 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 <mailto: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/ <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
>> 
>> _______________________________________________
>> Stoves mailing list
>> 
>> to Send a Message to the list, use the email address
>> stoves at lists.bioenergylists.org <mailto:stoves at lists.bioenergylists.org>
>> 
>> to UNSUBSCRIBE or Change your List Settings use the web page
>> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org <http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org>
>> 
>> for more Biomass Cooking Stoves,  News and Information see our web site:
>> http://stoves.bioenergylists.org/ <http://stoves.bioenergylists.org/>
>> 
> 
> 
> _______________________________________________
> Stoves mailing list
> 
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org <mailto:stoves at lists.bioenergylists.org>
> 
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org <http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org>
> 
> for more Biomass Cooking Stoves,  News and Information see our web site:
> http://stoves.bioenergylists.org/ <http://stoves.bioenergylists.org/>
> 
> 
> 
> _______________________________________________
> Stoves mailing list
> 
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
> 
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> 
> for more Biomass Cooking Stoves,  News and Information see our web site:
> http://stoves.bioenergylists.org/
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20170103/c3826406/attachment.html>