The Self powered Free Cooling System (SAF Cooling) consists of an improved wind system, which has been coupled with an electric current generator (dynamo, alternator, etc.) making it a thermodynamic machine for producing electric energy and hot. The movement of the windmill-extractor is produced taking advantage of the temperature difference between the inside and outside of an enclosure; Placed the windmill in the evacuation conduit, the hot gases will accelerate the rotary movement, which, in turn, will move the associated current generator. It consists of the following parts:
- Electric current generator.
- Vertical axis mill with wing effect.