SOLAR COLLECTOR SYSTEM
A line-focus type solar collector unit (10, 110) comprising one or more trough-like concentrator or reflector (12, 112, 142, 144) and a longitudinal radiation receiver (14, 114, 146, 148) fixed at the focus of each of the one or more concentrator or reflector. The solar collector unit is received within a casing (16, 116, 140) having a transparent sealing panel (18, 118, 150) provided over the aperture of the concentrator or reflector.