About: SunPortal

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An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

This first effort netted around 210 degrees F, not bad for a slapped-together project. I knew that I would probably need a reflector or two to goose up the temp. So I framed two cheap glass mirrors from Target,that hang from a hinge below the "window", about 22"x46". I put the frame on a folding table "leg" so that it would lay flat against the garage wall, and flap out at 90 degrees to send more sun into the cookbox. When installed, this boosted the temperature to a more respectable 260 degrees. The mirror is set to capture sun early in the day, without adjustment through the afternoon, since the 46" is parallel to the ground.

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rdfs:label	SunPortal
rdfs:comment	This first effort netted around 210 degrees F, not bad for a slapped-together project. I knew that I would probably need a reflector or two to goose up the temp. So I framed two cheap glass mirrors from Target,that hang from a hinge below the "window", about 22"x46". I put the frame on a folding table "leg" so that it would lay flat against the garage wall, and flap out at 90 degrees to send more sun into the cookbox. When installed, this boosted the temperature to a more respectable 260 degrees. The mirror is set to capture sun early in the day, without adjustment through the afternoon, since the 46" is parallel to the ground.
dcterms:subject	Solar cooker designs Solar wall oven designs Solar box cooker designs
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abstract	This first effort netted around 210 degrees F, not bad for a slapped-together project. I knew that I would probably need a reflector or two to goose up the temp. So I framed two cheap glass mirrors from Target,that hang from a hinge below the "window", about 22"x46". I put the frame on a folding table "leg" so that it would lay flat against the garage wall, and flap out at 90 degrees to send more sun into the cookbox. When installed, this boosted the temperature to a more respectable 260 degrees. The mirror is set to capture sun early in the day, without adjustment through the afternoon, since the 46" is parallel to the ground. The glass mirror seems to reflect much more light into the cookbox, but the aluminum reflector on top is much lighter. I then added a second reflector overhead, made from spectral aluminum sheets I'd acquired to experiment with other cooker designs. This is in a framed thin plywood flap about twice the size of the lower reflector. It's hinged at the top of the window frame, and put in place with a pulley, the rope set on a cleat when the optimum amount of sun reflects across the glass. This bumped up the temp another 60 degrees, peaking at 320 during the summer months. Voila! I have only cooked with it a few times, always successfully. I consider it a "proof-of-concept" design that could stand much revision, and welcome others in the solar cooking community to run with it. One thought would be for window manufacturers and green-builder contractors to adopt this as a selling point for off-the-grid and environmentally conscience homebuilders. I welcome thoughts and feedback!

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