Construction Guide

Solar hot air panel made of space-age mud and wattle. Membrane is 4-6 mm utility muslin, cement and acrylic. Frame is hemp, egg carton fiber, cement and acrylic. Stand is for testing purposes only. Retail material cost is equivalent to roofing material ().

hot air out

ambient air in

Efficiency baffles on the underside and a black color applied to the heat absrbing sun side will be tested and posted for comparison.

To be continued, with larger, faster and less expensive no-mold technique plus short description of the molds that were used to this point.