Vacuum Tube Collector With CPC Reflector

The vacuum tube collector with CPC (Compound Parabolic Concentrator) reflector has high energy yield due to special collector structure that contains vacuum tubes with highly selective absorber layer, U-shape copper pipes inside vacuum tubes for heat transport, aluminum heat transfer fin and highly reflecting CPC reflector. The CPC reflector ensures that direct and diffuse sunlight will fall onto the absorber inside of tubes, even at the back of tubes. The CPC reflector can improve collector efficiency by 15%