Solar Ovens

DCFusor

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This one looks real nice compared to what you saw a decade ago. Temp control would be nice, but I really like the leveling tray in there - great thinking.
 

pmbug

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* bump *

Sun Oven has improved their design apparently (received via email):
New Features:
  • New 20% larger than prior model SUN OVEN® - now you can cook a greater volume of food and use many of your favorite, standard size baking pans!
  • New E-Z Sun-track indicators - takes the guesswork out of aligning with the sun. Makes aiming toward the sun easy as 1, 2, 3!
  • New improved wind resistance. Larger, T-shaped foot, with included ground stakes, increases the number of delicious meals your family can enjoy, even on breezy days!
  • New sealing gasket assures better heat seal!
  • New thicker, low lead glass lets more solar energy reach your food. This special glass allows your oven to get 10 - 15% hotter, delivering delicious meals in record time!
  • New dual-purpose, wire leveling rack, with special air-flow design, swings freely to prevent spilling. It can also be set on the Sun Oven® floor, increasing the usable area inside!
  • New CD containing hundreds of recipes, Cook’n, the #1 recipe organizer software, Emergency Preparedness information, instructional videos and more!
More: http://www.sunoven.com/all-american-sun-oven
 

pmbug

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This looks interesting:




More: http://www.treehugger.com/sustainable-product-design/gosun-stove-reinvents-solar-cooking.html

Apparently, this is a new company that has reached it's investment capital goal on kickstarter. The company isn't selling commercially yet, but you can pre-order one by making a $179 donation on kickstarter:

http://www.kickstarter.com/projects/707808908/gosun-stove-portable-high-efficiency-solar-cooker

And here's the company website (for future reference):

http://www.gosunstove.com/
 

ancona

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Actually, a black tube in a glass bottle like that you have a superior insulation than any other method. Where I work, Liquid hydrogen, liquid nitrogen and UHP helium lines are around 3/8" but are jacketed in an 8" pipe that has been evacuated down to a hard vacuum. This way, they are affected a lot less by the brutal Florida sun. the jackets are coated with AR-7 which is an ultra high metal content aluminum coating. They take micro particles of aluminum and suspend them in a binder matrix. This is applied in 1/2 mil layers [it's really thin and hard to work with]. It flashes nearly instantly and cures in twenty minutes, so when applying twenty five coats, you don't have to wait so long between applications.

Anyhow, a vacuum is the greatest insulator.
 
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