Solar heat transfer apparatus

Heat transfer apparatus comprising, in combination:

• a) inner and outer bodies defining an axially extending annular space therebetween which extends at least part way about said axis, at least one of the bodies being heat conductive,
• b) a heat conductive woven mesh extending axially and annularly in said space at least part way about said axis, and in heat transfer relation with at least one of the bodies, the mesh also extending crosswise of said space to contact annular surfaces defined by said inner and outer bodies, along axial length of said mesh, said surfaces at locations facing and contacting the mesh along their lengths being free of indentations, the mesh confined between said annular surfaces and being separate from said bodies,
• c) and fluid in said space flowing axially and through the mesh between spaced apart mesh wires in heat transfer contact with said mesh, along the mesh length that extends about said axis,
• d) and solar cells carried by the outer body in heat transfer relation therewith,
• e) there also being heat dissipating means on the outer body and to which said heat is transferred for dissipation, and wherein said means includes fins on said outer body dissipating heat to gas adjacent or near the fins, said solar cells and fins axially spaced apart from one another on the outer body.