Recusol™
The Recusol™ is a sustainable and cheap central air heating system, which consumes only energy for a small fan, which in most cases already is available in a building. The Recusol™ is a recuperator and a solar collector that recovers both energy from waste ventilation air and from (sun) light.

The Recusol™ consists of a transparent large area flat heat exchanger made of special polycarbonate multi wall sheets or channel plate, which has on the back side a (sun) light absorber. Due to the large surface the flow losses are small, so a small fan power is required and minor or no noise production is generated.
In a feasibility study sponsored by the Dutch Ministry of Economic Affairs, program EOS, executed by SenterNovem the technical and economic feasibility was established.
Read more about Recusol™ at GreenIdeaLive.org