| Customization: | Available |
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| After-sales Service: | Yes |
| Warranty: | Yes |
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1.Vacuum tube feature:
The kind of vacuum tube assimilate the advanced 12 layers of spattering deposition of trivalent element technology, high quality borosilicate glass 3.3, gradual change of CU-SS-ALN/ALN selective absorption coating and make vacuum tubes have high performance of absorptance and low reflection ratio. Through interlayer, vacuum has a unique effect of thermal, with its temperature up to 380 degree of idle sunning, performing a strong ability.
2. Vacuum tube specification:
47-1500MM, 58-1800MM (Standard specification)
47-1800MM, 58-2000MM (optional specification)
3. Vacuum tube Loading quantity in container:
47-1500MM, 4700 PCS/20ft, 9600 PCS/40ft.
58-1800MM, 2860 PCS/20ft, 6600 PCS/40ft
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Specification: |
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Structure |
All-glass double-tube co-axial structure |
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Glass material |
High borosilicate 3.3 glass |
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External pipe diameter and thickness |
dia.=47±0.7mm &=1.6mm dia.=58±0.7mm &=1.6mm |
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dia.=70mm &=2.0mm |
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Internal pipe diameter and thickness |
dia.=37mm &=1.6mm dia.=47mm &=1.6mm |
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dia.=58mm &=1.6mm |
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Pipe length |
1500mm 1600mm 1700mm 1800mm1900mm 2000mm |
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Absorptive coating property |
Structure |
AL/AL-ALN(H)/AL-ALN(L)/ALN |
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Sediment method |
Single target magnetron sputtering plating |
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Specific absorption |
as=0.88~0.91(AM1.5) |
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Emission ratio |
0.05~0.075(80°C±5°C) |
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Vacuum tightness |
P≤5.0×10-³Pa |
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Idle sunning property parameters |
Y= 220 ~ 260m²°C/KW |
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Solar irradiation for obtaining a preset water temperature |
H≤4.7 MJ/ m² |
H=4.1~4.4 MJ/ m² |
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H≤3.7 MJ/ m² |
H=3.1~3.4 MJ/ m² |
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Average heat loss coefficient |
Ult=0.6~0.7W/( m².°C) |
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