We are the professional solar vacuum tube manufacturer,dayly output is 30,000 pieces.
| Structure | All-glass couble-tube co-axial structure |
| Glass material | High borosilicate 3.3 glass |
| External pipe diameter and thickness | Φ=47±0.7mm&=1.6mm Φ=58±0.7mm&=1.6mm Φ=70±0.7mm&=2.0mm |
| Internal pipe diameter and thickness | Φ=37±0.7mm&=1.6mm Φ=47±0.7mm&=1.6mm Φ=58±0.7mm&=1.6mm |
| Pipe length | 800mm 1200mm 1500mm 1600mm 1800mm 1900mm 2000mm 2100mm |
| Absorptive coating property | Structure Cu/SS-ALN(H)/SS-ALN(L)/ALN |
| Sediment method 3 targets magnetron sputtering plating | |
| Specific absorption 0.93-0.96 | |
| Emission ratio 0.4-0.6 | |
| Vacuum tightness | 5.0×10¯³ Pa |
| Idle sunning property parameters | 260—300 m².C/KW |
| Solar irradiation for obtaining a preset water temperature | Φ=58 H≤4.7MJ/m² H=3.7-4.2MJ/m² |
Φ=47 H≤3.7MJ/m² H=2.9-3.2MJ/m² | |
| Resistant Hail | ≤25mm |
| Useful life | 15 years |
Tri-target Solar Evacuated Tube
Baoguang heat collector evacuated tubes approuved by CGC-SOLAR
This kind of tube is made of two layers of borosilicate glass which is specially hard.Borosilicate glass 3.3 is an ideal material for solar evacuated glass tube because it has high transparency and can withstand high temperature as well as high pressure.
The absorber layer is coated with stainless steel,aluminum and copper shen stainless steel is added,and the absorptance is higher.Since copper is more cut down when copper is coated as the infrared-reflection layer.
The evacuated jacket which is of high vacuum degree is a kind of superior insulation.It reduces heat loss and protects the water in the tube from freezing.
Solar evacuated glass tube can produce hot water even tough water.That's why it is suitable to be used in areas and regions where is very cold or always cloudy.
The tubes can resist impact from hail of diameter 25mm and are suitable for cold area in winter.
If you wanna get more information about our products and company ,please visit CNBG.CN
or contact us.
