Bob Fickle wrote:
For cooling, you'd want a well-insulated "flat plate" solar
collector. This would provide a large surface for radiating heat into
the sky at a wide range of angles. You wouldn't want a low-E surface
on the panel, because this prevents radiative cooling. My first
experiment would be a flat-black metal plate, foam insulation behind
and double-glazed glass in front.
Alex Caliostro wrote:
would this system also work at night based on mr beene's post
http://www.energylan.sandia.gov/sunlab/PDFs/solar_dish.pdf
-alex
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Think about a design that can be covered by mylar or foam by day with a
1/2 inch gap between the surface and the insulation and extend the
shading down a few inches below the edge of the plate so warm air does
not circulate up under the lower edge of the top insulation by day, It
should improve the effect. Think also about making it survive high winds.
