NARVA Vacuum Tube

NARVA Vacuum Tubes are available in 2.000 mm, 1.775 mm, 1.500 mm und 800 mm length in direct flow and heatpipe version. The tube diameter is 56 mm, the wall thickness of the cladding tube is 1,8 mm.

The absorber plates are available with
single sided (Standard) and double-sided (Power) coating.

Double-sided coating is used in collectors which are fitted with reflector systems. Depending on the design an increase in performance of up to 30% can therefore be achieved for each pipe. Also reflecting roofs help to increase the performance.