Solarkollektor

(A1) Die Erfindung betrifft einen Solarkollektor, umfassend mindestens ein von einem Waermetraegermedium durchstroemtes Absorberrohr (11) und einen aus Sonnstrahlrichtung betrachtet mindestens hinter dem Absorberrohr (11) angeordneten Spiegel (13), welcher das einfallende Sonnenlich in Richtung Absorberrohr (11) reflektiert, wobei aus Sonnenstrahlrichtung betrachtet vor dem Absorberrohr (11) ein fuer Sonnenlicht transparentes Substrat (14) angeordnet ist, welches zumindest in einem Oberflaechenbereich eine Beschichtung (15) aufweist, die Waermestrahlung in Richtung Absorberrohr (11) reflektiert.

EP 2093518 A1 UPAB: 20090907 NOVELTY - The collector has an absorber pipe (21) that flows through into a heat distribution medium. A mirror (23) is arranged behind the absorber pipe with respect to sun radiation direction. The mirror reflects the incoming sunlight toward the absorber pipe. A glass substrate (24) that is transparent to the sunlight is arranged before the absorber pipe with respect to the sun radiation direction, where the substrate is formed as a tube. The substrate exhibits a coating (25) in a surface area, where the coating reflects the heat radiation toward the absorber pipe. USE - Solar collector. ADVANTAGE - The glass substrate exhibits the coating in the surface area, where the coating reflects the heat radiation toward the absorber pipe, thus reflecting a part of the heat energy radiating outward from the absorber pipe back to the absorber pipe and discharging to the heat distribution medium, and hence increasing the efficiency of the solar collector during conversion of the sunlight energy into heat energy.