What Parts Of The Vacuum Tube Are Made Of?

- Mar 30, 2019-

Vacuum tube For the whole glass coaxial double-layer circular tube structure, it is mainly composed of three parts: outer glass tube (outer tube), vacuum clamping and inner glass tube (inner tube). The inner tube is used for water tolerance, and the black part of the outer wall of the inner tube is a selective absorption coating, that is, a membrane layer, which is a medium for photothermal conversion of the vacuum tube. The membrane gathers energy by absorbing visible and near-infrared light from the sun's rays, and converts light energy into heat to keep the water temperature in the tube rising. Between the outer tube and the inner tube is the vacuum interlayer, whose function is to reduce the heat loss and play the role of thermal insulation, thus greatly improving the thermal efficiency.