Product Description

tank(mm)：OuterΦ **0 f tube：Φ*7****0/Φ*8****0 high effective tube frame：Cold-rolled steel sheet material ：inner tank : stainless steel SUB****2B food, 0.*1mm，outer tank: fluorine titanium 0.*1mm，insulation :*5mm polyurethane foam，al-refective banner Specification of vacuum tube structure all glass concentric dual tube geometry， Material borosllicate 3.3 glass Absorptive coating properties Con structure grade AL - Nx/AL solar selective absorptive coating Method of deposition dc reactive sputtering absorptance > *7 % emittance < 3 % Stagnation temperature **0 - **0 c Work life not less than *5 years Manual control water-feed Intelligent control, feed water automatically, water temperature and water level can be seen.