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'[TECH]:: Solar Cookers'
2010\05\11@235416 by Russell McMahon

face picon face
There are a zillion solar cooker designs in the world, ranging from
extremely cheap and so\imple to very high tech.
Here's some:

Some (but not most) would operate to some degree on an overcast rainy day.
I have observed (and burnt my hand on) steam coming out of an evacuated tube
solar heater system under such conditions and at least one design here uses
these.

Plans for 31 simple solar cookers

                http://solarcooking.org/plans/

More.
Some VERY real - see eg Helios Bread Oven !!!!!!!

           http://solarcooking.wikia.com/wiki/Category:Solar_cooker_plans

Index page by over type with links to other pages
37 designs listed here

  http://solarcooking.wikia.com/wiki/Compendium_of_solar_cooker_designs


130 designs
Vast range - from trivially simple to rather high tech,

       http://solarcooking.wikia.com/wiki/Category:Solar_cooker_designs

Novel. Cooksack.
7" foldup and 12 ounces  (200mm 340g)
Oven proper is 34g.
Read between the lines suggests it has issues which are being looked at.

   http://www.terra.org/cocinas/fichaen.php?id=88

What works - report

 http://solarcooking.org/research/Dormio-report.htm

Winebox cooker - transitioning to square foot paste up mirror cooker.
Credibly high performance claimed

       http://solarcooking.wikia.com/wiki/Winebox_Solar_Rice_Cooker

 Winebox version construction details and discussion
  Jar in jar adds substantially to performance (probably)


http://transitionreno.ning.com/group/simplesolarcooking/forum/topics/the-cheapo-winebox-cooker

80 designs from various sources

 http://www.terra.org/cocinas/searchen.php?tsearch=&fam=&prod=&pag=1


Fresnel
Some good prospects

            http://solarcooking.wikia.com/wiki/Fresnel_solar_reflectors

I like the DATS cooker - 2nd item down

             http://diyenergy.blogspot.com/2007_08_01_archive.html

__________________

Needless to say, if you can cook food you can pasteurise and even sterilise
water as well.



                      Russell

2010\05\12@001913 by John Gardner

picon face
The link is long gone, but I happened across a website for an
Alaskan greenhouse operation which operated on geothermal
power some ten years ago - They were growing vegetables for
market.

Gravity-well cooking, you might say.

Jack

2010\05\12@035655 by Russell McMahon

face picon face
> The link is long gone, but I happened across a website for an
> Alaskan greenhouse operation which operated on geothermal
> power some ten years ago - They were growing vegetables for
> market.
>
> Gravity-well cooking, you might say.

It all tends to be solar.
Or stellar.
Just longer delayed from source to sink in some cases :-).




          Russell

2010\05\12@043258 by Michael Watterson

face picon face
John Gardner wrote:
> The link is long gone, but I happened across a website for an
> Alaskan greenhouse operation which operated on geothermal
> power some ten years ago - They were growing vegetables for
> market.
>
> Gravity-well cooking, you might say.
>
> Jack
>  
Ireland one of the larger Banana exporters (we really are a Banana
Republic), but apart from Canaries which is geographically more Africa
than Europe, only Iceland in "Europe" grows Bananas.

2010\05\12@050626 by Russell McMahon
face picon face
> John Gardner wrote:
> > The link is long gone, but I happened across a website for an
> > Alaskan greenhouse operation which operated on geothermal
> > power some ten years ago - They were growing vegetables for
> > market.
> >
> > Gravity-well cooking, you might say.
> >
> > Jack
> >
> Ireland one of the larger Banana exporters (we really are a Banana
> Republic), but apart from Canaries which is geographically more Africa
> than Europe, only Iceland in "Europe" grows Bananas.

I thought of noting with my prior post that Iceland is the largest
grower of bananas in the EU ! :-).
Thermal springs work wonders

      R

2010\05\12@154309 by cdb

flavicon
face

>>Michael Watterson typed
::O nly Iceland in "Europe" grows Bananas.

>>Russell McMahon scrabbled

:: I thought of noting with my prior post that Iceland is the largest
:: grower of bananas in the EU ! :-).
:: Thermal springs work wonders

I've been to Hveragerdi (please insert correct devils tail rotated 360
deg character here in place of the 'd' ).  There was (1980) only a
couple of banana palms and some trees. They are grown in greenhouse
and the thermal springs play a part in maintaining the temperature.
The greenhouse (also a tourist attraction) is not a greenhouse in the
back garden glass framed affair, the walls are actually made of brick
and wood. The ceiling (from what I can remember ) does have some
glass, mainly to let light in.

Colin


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