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Author Topic: Solar Ovens  (Read 14180 times)

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Offline Bill Quick

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Solar Ovens
« on: October 11, 2010, 07:16:33 PM »
This was originally posted at Daily Pundit

Daily Pundit » Sun Cooking, Solar Panels, Connections, and Crazy Wacko Survivalist Bullshit

Solar power seems to offer an answer here, as well. My Solar Oven arrived yesterday, so I set it up today on the patio to see how it does with a baked Chicken and Rice dish.



I figured that the principle must be about the same as that for a low temp slow cooker, so I just tossed rice, water, chicken, garlic infused olive oil, and a handful of spices into the pot, put it in the oven, closed the lid, and aimed it at the sun. I’ll let you know how it turns out in four or five more hours. At the moment, the temp inside the oven is right at 176 degrees farenheit. “Low” for a crockpot is around 170F, and “high” is 190-200F. The docs say the oven can easily reach the 190  level. If so, just about any crockpot recipe should be workable for the solar oven, provided you get enough sunlight to maintain the temps. UPDATE: The Solar Oven temp is now reading 205F. I suspect it will be good for boiling water, and more than sufficient for Pasteurizing it. UPDATE: Here is the finished product:



Looks pretty good, doesn’t it? Tastes that way, too. I discovered that with the included reflectors attached, I could get the temperature inside the oven up to 300F, and this was after the hottest sun was gone. You could pretty much do standard baking and roasting with this thing. I think I’ll see how it does with a couple of cast iron dutch ovens or a cast iron skillet….
« Last Edit: October 11, 2010, 07:21:28 PM by Bill Quick »
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Offline DJ Niner

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Re: Solar Ovens
« Reply #1 on: October 14, 2010, 05:03:01 AM »
Bill, can you say where you purchased your oven?  I've been looking for something like that, with poor results.
 
 
So far, the extent of my solar cooking has been warming Compleats for lunch at work by wrapping them in a black cotton rag and putting them on the dash of my car for 2-3 hours.  Works fine in warm weather; I'm already eating while half the lunchroom is still in line for the microwave(s).  Gotta walk before I learn to run...  ;D
 
Thanks in advance for any info you can provide, and results of any further use of your oven!


Offline Bill Quick

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Re: Solar Ovens
« Reply #2 on: October 14, 2010, 07:45:57 PM »
Yeah, it's called a "Sport Solar Oven," and as such things go, it's pretty cheap at 135 bucks.  But spring for the extra $23 and get the reflectors.  They make a lot of difference in interior heat and cook time.

http://www.solarovens.org/


Basically, I treat it as a regular oven capable of hitting 300 degrees for two or three hours in bright sunlight.  The ambient temp doesn't seem to matter much.

It's best with casseroles, soups, stews, and the like, but I've baked pans of cornbread in it, and one of these days I'll get ambitious and try a loaf of whole wheat bread, just to see.

I've also used it just to boil water.  You can disinfect water in one, and also bring water to a rolling boil.  I have a large french press coffee maker, a hand coffee mill, and a bunch of coffee beans stored in air-tight, oxy-free conditions.  The world may end, but I still gotta have my coffee!   :D
"You can get a lot farther with a kind word and a gun than a kind word alone."  --   Al Capone

smackdaddies

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Re: Solar Ovens
« Reply #3 on: October 14, 2010, 09:41:53 PM »


I've also used it just to boil water.  You can disinfect water in one, and also bring water to a rolling boil.  I have a large french press coffee maker, a hand coffee mill, and a bunch of coffee beans stored in air-tight, oxy-free conditions.  The world may end, but I still gotta have my coffee!   :D

I am so buying one

gregm

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Re: Solar Ovens
« Reply #4 on: October 15, 2010, 10:59:26 AM »
Thanks for the link Bill. I do have plenty of propane to fire up many different cooking devices, but I have been interested in a solar oven as a just in case backup.

Also the wife and I can't imagine a morning without coffee, so I too have pounds of beans.  :D


Offline oldguy52

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Re: Solar Ovens
« Reply #5 on: November 11, 2010, 12:13:02 AM »
I was thinking about solar ovens the other night and the possibility of making my sour dough artisan bread in one. After reading Bill's post above I'm not sure I'd get the same results as I do in the electric oven. I bake my loaves at 425 for thirty five minutes and it doesn't sound likely these will get that hot. I've got a cast Iron dutch oven that I've been meaning try try over charcoal too, but haven't gotten around to it yet.

Found these

http://www.stockstorage.com/solar_sun_oven.html

Don't know anymore than what's on the website though.

Rik
O.G.

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When one finds himself living in interesting times, it is prudent to become as uninteresting as possible.... Me, 2011

Offline Bandit5

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Re: Solar Ovens
« Reply #6 on: November 11, 2010, 03:02:57 AM »
There's also:

 http://solarovens.net/

which has a number of different models.  Shipping is pretty atrocious, however.

I've also been looking at some linear fresnel lenses on EBay.  They're a bit cheaper, but don't come with any actual oven.  I keep thinking there might be a useful peanut butter/chocolate moment in there, somewhere...

Offline flunky

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Re: Solar Ovens
« Reply #7 on: November 11, 2010, 08:53:17 AM »
Bill, for more uses for that temperature range you could look up recipes for a "slack oven", which was a Colonial term for a low-temperature oven. I've seen a couple of them although the recipes themselves have never been collected in one book. Here's one

Offline Bill Quick

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Re: Solar Ovens
« Reply #8 on: November 11, 2010, 09:49:29 AM »
Thanks, Flunk!  Old Guy, that one you linked looks almost identical to mine, so I assume the performance would be similar.  Bandit, I bought one of those eBay fresnel lenses - 48"x50", I think - with the intention of trying to build some sort of cooking contraption with it, but so far I've never gotten around to building the frame.  I should probably make that a weekend project and report back, with pics.  Maybe soon.
"You can get a lot farther with a kind word and a gun than a kind word alone."  --   Al Capone

Offline Bandit5

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Re: Solar Ovens
« Reply #9 on: November 11, 2010, 12:22:22 PM »
I'd be highly interested in the results.  You'd wind up with something considerably less compact (when fully assembled), I think, due to the large lens size and long focal length, but capable of reaching very high temps very fast on less-than-perfect days, for perhaps even less money than the commercial solar ovens, even if you buy the lens at retail.

Offline Bill Quick

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Re: Solar Ovens
« Reply #10 on: November 11, 2010, 12:28:52 PM »
It's been a while, but I seem to recall the lens was something like a hundred bucks.  I have to make a run to the new Lowes here in town to buy that shed today and arrange for delivery (and get the ply and 2x4s to build a foundation for it), so I'll take a look at getting the stuff to build a frame for the lens while I'm at it.
"You can get a lot farther with a kind word and a gun than a kind word alone."  --   Al Capone

Offline Bandit5

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Re: Solar Ovens
« Reply #11 on: November 11, 2010, 01:49:12 PM »
That's about what the EBay guys are retailing them for.

http://www.greenpowerscience.com/SHOPFRESNELHOME.html

Offline Bill Quick

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Re: Solar Ovens
« Reply #12 on: November 11, 2010, 09:26:16 PM »
That's about what the EBay guys are retailing them for.

Uh huh.  I bought mine from the Green Power web site.
"You can get a lot farther with a kind word and a gun than a kind word alone."  --   Al Capone

Offline Cajun Napalm

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Re: Solar Ovens
« Reply #13 on: August 04, 2011, 12:05:16 PM »
If you're interested in building your own, this link has some pretty good plans and they are relatively cheap to construct.

http://solarcooking.org/plans/

prepperjim

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Re: Solar Ovens
« Reply #14 on: August 15, 2011, 08:11:48 PM »
Bill -

Do you still like your solar oven? I have been wanting to buy one for quite some time and try it out. I wonder how many times I can make my wife's eyes roll when I tell here about this one!


Offline Bill Quick

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Re: Solar Ovens
« Reply #15 on: August 15, 2011, 10:09:17 PM »
Yes, PJ, I like it a lot.  It's sturdy, simple to use, and bakes things very well.  And all it needs is sunlight.
"You can get a lot farther with a kind word and a gun than a kind word alone."  --   Al Capone

prepperjim

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Re: Solar Ovens
« Reply #16 on: September 03, 2011, 08:54:40 AM »
Yes, PJ, I like it a lot.  It's sturdy, simple to use, and bakes things very well.  And all it needs is sunlight.

I finally got off the "pot" and ordered one of these. I looked at my finances for last month and I did not spend a single dollar on preps last month. I feel *ashamed*! Time to make up for it this month.


 

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