Solar collector using air as heat transfer medium - passes air through heat-absorbing porous layer, e.g. metal fibre or filament mat

摘要

The collector uses a gas (air) as heat transfer medium. This air passes through a heat absorber formed by a layer (7) with a porous structure. This layer may consist of fibrous material or a mat formed of filaments and the fibres or filaments may be in metal. The porous layer may, alternatively, be a material with open cellular structure. The collector may comprise a thermally insulated (2) enclosure (1) with an air inlet duct (5) and an outlet duct (6) at its respective ends which ducts communicate with the absorber (7) covered by at least one transparent panel (11,12).FL.