all-glass evacuated solar collector tube

All-glass evacuated solar collector tube (Vacuum tube) is applied to greatly improve the absorption function, the heat collecting ability increase 18%, the water temperature is higher; the same sunshine makes different hot water efficiency. Adopt American technology and control strictly all the working procedure from cleaning to exhausting. So that the vacuum rate of interlayer in the tube can be 10^-3pa and radiation heat loss can be little. The unique carbonic coating is more reliable than the traditional AL-N/AL coating, and its ageing persistence is better, the coating property is longer.
Vacuum tube is made of 3.3 high boron silicon glass and has small thermal expansion rate and high intensity. It can resist the impact of hailstone under 25mm.
Advanced technology
Multi-layer magnetron sputtering gradation aluminum-nitrogen/ aluminum sun selective absorption coating improve the heat collecting efficiency of high vacuum tube.
Good material
Vacuum tube is made of 3.3 high boron silicon glass tube that satisfies QB/T2436-99idtISO4803-1978 standard, with high transmittance, well cold and thermal shock resistance and strong optics stability.
Quality Assurance
Strictly follows the national standards GB/T17049-1997 starting from raw material purchase to finished products, all the employees cooperate well and never allow any faulty products.

Performance parameter of the vacuum tube
High collecting efficiency: magnetron sputtering gradation aluminum-nitrogen/ aluminum sun selective absorption coating, solar absorptance0.93, heat emissivity6%, less heat loss and good heat preservation.
Good Thermal Efficiency
Hail Resistance:

Multi-layer magnetron sputtering gradation aluminum-nitrogen/ aluminum sun selective absorption coating improve the heat collect