Patent ID: 6119683
Filing Date: 2000-09-19
Classification: F24S,Y02E,Y10S

Abstract:
A solar heat collecting apparatus comprising:a vacuum vessel;a heat-absorbing member for absorbing solar heat, arranged within the vacuum vessel so that it is separated from the walls of the vacuum vessel and so that its upper surface may be irradiated by solar radiation;a medium transport pipe, coupled to the heat-absorbing member, for transporting a medium to which the solar heat is transmitted from the heat-absorbing member;a lower surface layer, formed on the underside of the heat-absorbing member, for reflecting infrared radiation which would emerge from the heat-absorbing member; andat least one insulating film provided between the lower surface of said heat-absorbing member and the bottom surface of said vacuum vessel and in parallel with those surfaces, said at least one insulating film comprising a thin metal film.