Flat vacuum solar collector for utilizing thermal solar energy, has hollow space provided among front glass, medium-prominent layer and rear side sheet metal, where hollow space is evacuated

摘要

The flat vacuum solar collector has a hollow space (50) provided among front glass, medium-prominent layer (20) and rear side sheet metal (30), where the hollow space is evacuated. The medium-prominent layer is fixed with tubes by an absorbing sheet metal. The medium-prominent layer is provided by a sequence glass, expanded metal and sheet metal.