LiYang-5 Heat Pipe Solar Vacuum Tube

LiYang Solar Vacuum Tube:Natural, environmentally friendly, high quality, light, stylish
LiYang-5 Solar Vacuum Tube:


1. Advanced technology: The multi-layer magnetron sputtering gradation Al - N / aluminum coating solar selective absorption coating of new technology, the vacuum of not less than 1.33 × 10-3Pa, to further improve the efficiency of the vacuum tube collector.
2. with material about: tube material selection consistent with QB/T2436-99 (idt) ISO4803-1978 standard of 3.3 Marino blank borosilicate glass tube manufacturing, its high transparency and good resistance to thermal shock, high optical stability.
3. Quality assurance: in strict accordance with GB/T17049-1997 national standards, meticulous organization, strict management of raw materials purchased from the beginning until the final product out of library co-operation of all staff, strict product quality to the road to eliminate substandard products out of
4. Specifications: The current production of a Φ47, Φ58, Φ70 diameter, 1.2 m / 1.5 m / 1.6 m / 1.8 m /


material
borosilicate glass 3.3
length
1500mm
inner tube diameter
37mm
outer tube diameter
47mm
membrane
gradient AL-N-C/AL selective absorbing coating
solar absorptance
> 0.09 (AM = 1.5)(international requirements as:>0.86)
hemisphere emission ratio
> 0.086 (80 °C) (international provisions: ≤ 0.09)
air drying performance parameters
≥186square meters.°C/kw(international requirements as:≥175)
The amount of sun radiation exposure stuffy
≤ 2.86MJ / m
2
(international provisions: ≤ 3.8)
Average heat loss coefficient
≤ 0.75W / m (International provisions: ≤ 0.90)
inside and outside the tube laminated tube
≤ 5 × 10-3pa (international provisions: ≤ 5 × 10-2pa)
heat shock
Below 25°C 90°C repeated alternating hot and cold water more than three times without damaging the impact of
pressure
withstand the pressure of 0.6Mpa
anti-hail
size of not more than 25mm can withstand without damage hail attack