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vacuum tubes solar water heater
Detailed profile

tank(mm)Outer Φ 460

f tubeΦ47*1500/Φ58*1800 high effective tube

frameCold-rolled steel sheet

material inner tank : stainless steel,SUB304-2B food,0.31mm

outer tank: fluorine titanium ,0.31mminsulation :55mm polyurethane foamal-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 > 97 %    emittance < 3 %

Stagnation temperature 250 - 270 c

Work life not less than 15 years

Intelligent control, feed water automatically, water temperature and water level can be seen

Constant temperature control to ensure the water temperature at a certain point



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