Corrugated heat pipe roof - using plastic tubes and foil under roof to collect heat for space or water heating

摘要

Heat which is present directly underneath a corrugated asbestos cement roofing of buildings is utilised for space heating and for hot water preparation by fixing a meandering line of plastic pipes into the hollows of each corrugation. If necessary, this can be combined with a heat pump and/or with solar heat collectors outside the roof. This is a much cheaper installation than known systems. It can readily be added to existing houses to feed a hot water tank.