Solar collector panel for heating ventilation air

F - Mech Eng,Light,Heat,Weapons – 24 – J

Patent

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Details

F24J 2/28 (2006.01) F24F 5/00 (2006.01) F24F 7/06 (2006.01) F24F 7/10 (2006.01) F24J 2/20 (2006.01)

Patent

CA 2467078

A solar collector panel is disclosed for heating of air, in which the conventional insulation material on the back panel facing away from the sun is replaced by a spacing between a permeable back panel and a permeable heat absorber means, so that a heat convection airflow through the back panel and into the interior of the solar energy panel against the temperature gradient prevents the convection heat loss in the opposite direction. The back panel also reduces the radiation heat loss from the heat absorber means. Furthermore, in case the flow of air through the solar energy panel is stopped, the convection-insulation will no longer be effective, and a photovoltaic cell panel placed within the solar energy panel and generating electricity from the solar radiation will not be subjected to the damaging high stagnation temperature of a traditionally insulated solar collector panel.

L'invention concerne un panneau solaire destiné au chauffage de l'air dans lequel le matériau isolant classique disposé sur l'arrière du panneau, à l'abri du soleil, est remplacé par un vide entre un panneau arrière perméable et des moyens d'absorption de la chaleur, de façon qu'un courant d'air de convection traversant le panneau arrière et passant à l'intérieur du panneau d'énergie solaire, en sens contraire du gradient de température, empêche la perte de chaleur de convection dans la direction opposée. Le panneau arrière permet aussi de réduire la perte de chaleur de convection des moyens d'absorption de chaleur. En outre, en cas d'arrêt de l'écoulement d'air dans le panneau d'énergie solaire, l'isolation-convection n'est plus efficace, et un panneau de cellules photovoltaïques disposé à l'intérieur du panneau d'énergie solaire et produisant de l'électricité à partir du rayonnement solaire n'est plus soumis à la température stagnante élevée et délétère qui règne dans les panneaux solaires isolés traditionnels.

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