vacuum tube

vacuum tube:Adopt international advanced interferometer coating technique. Absorbing layer is coated with 3 layers.

Solar vacuum tube

Adopt international advanced interferometer coating technique. Absorbing layer is coated with Stainless Steel and Nitrided Aluminum. That effectively solved the problem such as performance attenuation of normal vacuum tube under high temperature for a long time.

Reflection metal layer with super-pure copper mirror has high heat efficiency, low reflectivity, resist low temperature and perform stably. The tube has better quality at the same price than normal tube , is especially used for separate pressurized hot water system and project. It can be applied for industrial and technical field such as generating electricity , refrigerating , desalting of seawater.

Select 3.3 high borosilicon glass tube in according with GB/T2436-99(ISO4803-1978) standard. It has good performance of cold and heat resistance , high sunlight permeation, and strong optics stability.

Produce and inspect according to enterprise standard higher than GB/17049-1997 national standard.

Common specification: 47×1500mm ; 58×1800mm ; 70×2000mm

 

Item 47×1500mm 58×1800mm 70×2000mm Performance parameter of shining emptily ≥175 m2*/kW ≥175 m2*/kW ≥175 m2*/kW Complement shining amount ≤3.8MJ/ m2 ≤4.7MJ/ m2 --------- Average heat loss coeffecient ≤0.90w/ (m2*) ≤0.90w/ (m2*) ≤0.90w/ (m2*) Vacuum degree ≤5×10-2pa ≤5×10-2pa ≤5×10-2pa Pressure resistance 0.6MPa 0.6MPa 0.6MPa Heat impact resistance bear three pounds with 0 water Assaulting resistance endure impact that 30mm steel ball fall down from 450mms Shining temperature emptily >250 >250 >250 absorptivity >92% >92% >92% reflectivity ≤8% ≤8% ≤8% Freeze resistance >-40 >-40 >-40 weightkg ≥1.3 ≥2.0 ≥3.1 capacityL 1.3 2.7 4.6 The total length public errandmm ±7.5 ±9 ±10 Outer tube diametermm 47±0.7 58±0.7 70±0.7 Outer tube thicknessmm 1.6±0.15 1.6±0.15 2.0±0.15 Inner tube diametermm 37±0.7 47±0.7 58±0.7 Inner tube thicknessmm 1.6±0.15 1.6±0.15 1.6±0.15

vacuum tube