1.High heat absorbing, low heat loss. 2.corrosion resistance, long service life. 3.Comprehensive and efficient heat absorbing.

Characteristics

All glass vacuum  solar collector  tube is the key part of solar collector. It consists of two layers of high strength, impact resistance of the special hard borosilicate glass composition, the inner tube wall is a selective absorbing coating by magnetron sputtering. The coating is between the inner tube at one end and the other side of the sealing layer inside the outer tube. The outer tube and inner tube between the vacuum ring part is used to reduce heat dissipation.

We successfully apply solar selective absorbing coating technology in the thermal efficiency and thermal stability achieved good results. Solar selective absorbing coating have made use of most of solar energy, and reduce heat loss. One of the major changes is in the optical properties and thermal stability.Magnetron sputtering showed that the exact vacuum absorption rate: 0.94 - 0.96 even at 100 °C can be achievedEmissivity: 0.04 - 0.06Performance:Using two layers 3.3 high borosilicate glass: Laminated vacuum tube in the 5x10-3pa long-term maintenance of high vacuum;Magnetron sputtering AL / N / AL selective absorption layer;High-efficiency: Magnetron sputtering AL / N / AL selective absorbing coating.     Long life: service life of 15 years;Good weather resistance; annual thermal efficiency is good, and can resist the impact of hail diameter less than 25mm.

Common tube1. Not bombingSangli brand vacuum products have the high heat absorption rate power, the vacuum tubes and the tank can instantly form a larger temperature difference, the hot and cold water can be rapidly cycling, the inner side of the vacuum tube and the absorption side of direct sunlight reflected light also produced significant difference in temperature, forming a temperature cycling process, which further increases vacuum tube freezing resistance ability. in the cold winter of north china.2. High heat absorbing, low heat loss, corrosion resistance, long life service.Advanced technology, an overall improvement in the molecular structure of coating layer, the vacuum tube can be operating temperature up to 300 °C, avoid the vacuum tube film aging, color changing, performance degradation, which caused by the long-term exposure to, so as to make the longer life using.3. Comprehensive and efficient heat absorbing

Common Glass Solar Heater Tube