Wanted to share a few pics of a project we worked on 2012.
Andrew, a friend of the Co-op, participated in the YMCA-YWCA Self-Employment Program. His business start-up project was called RadiantWave Solar.
The air in the boxes is heated by the sun. When the temperature inside the box reaches a certain level, a fan kicks in and sucks the heated air through insulated flexible ducting into the area you want heated.
This was a custom built system using recycled materials. In this particular application, the additional heat from the solar collector helped to reduce energy costs and provided radiant heat to warm the concrete foundation in the basement where we did our bedding plant starts.