Meiguang solar vacuum tube

The internal structure of the vacuum tube

Construction of solar vacuum tube

All-glass vacuum tube from the inside of the structure, solar selective absorbing coating, vacuum laminated, cover glass, bearing parts, getter,and other components.

1.Within the glass tube used as the flow of water pipes

2.Copper oxide, black nickel, black chrome, black zinc, copper and other solar selective absorbing black paint, by vacuum deposition, sputtering, electrochemical treatment process, including the glass evenly coated the outer surface to absorb solar radiation

3.Will be coated with selective coating enclosed within a glass cover glass, and then pumped into a vacuum between the inside and outside the glass tube to form a vacuum of 0.05Pa vacuum laminated to reduce the air caused by convection and conduction heat losses, this is similar in principle with thermos

4.All-glass vacuum tube single-ended openings, through one end of the inner and outer tubes fused ring sealed, the other end of the inner tube is closed hemispherical head, the spring clamp is used to support the round-house in the cover glass side, making the absorption of solar radiation within the glass temperature, the glass round the free end of the formation of thermal expansion, which cause buffer the water heater vacuum tube open at the end of the thermal stress

5.Vacuum tubes in the heat, the original was adsorbed on the wall of the trace gases (mainly water vapor) will be released, the impact of vacuum, suction getter and is used to absorb these films to be released

Classification of solar vacuum tube

1.Use of domestic solar water heater vacuum tube solar diameter divided by 37,47,58,70 mm.According to length into 1.2,1.5,1.6,1.8,2.1,2.3 m.

2.According to the production process is divided into: Solar ordinary clarinet, ordinary blue tube; three high blue tube, three-high purple tube

Solar ordinary tube and three executives of different

1.Fundamental difference: the film structure is different, leading to absorb the sun's rays is not the same principle

2.Features: three executives to improve the absorption of more than 12%, launched more than 30% -40% lower, super absorption, less heat loss, heat up fast

3.Technology: High temperature effects pipes, cold pipes, tubes were efficient three-target, dual-target, single-target magnetron sputtering process; ordinary tubes are generally single-target magnetron sputtering

4.Inner tube colors: with the naked eye, heat, cold tube inner tube color is dark red (due to the underlying layer of copper); and efficient management and general management for the white (due to the underlying aluminum layer)