Detailed descriptions of the construction of two aluminum downspout hot air solar collectors. The original was built by me, Scott Davis, and it works well,...
Lateat video of this product: www.eco-company.tv CoolEarthSolar.com has a patented idea for inflatable solar collectors that are much cheaper than polished mirrors to concentrate sunlight...
This video summarizes and rates several solar hot air collector absorber designs including the black box, backpass, vented soffit, double layer screen and aluminum downspout....