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- Contact Person : Mr. Cao James
- Company Name : Haining Babysun Solar Industry Co., Ltd.
- Tel : 86-573-87656382
- Fax : 86-573-87953656
- Address : Zhejiang,Haining,5 Huangshan Road, Jianshan Zone, Haining, Zhejaing,China
- Country/Region : China
- Zip : 314415
new unpressurized all-glass solar vacuum tube
Product Detailed
Related Categories:Solar Collectors
solar vacuum tube
1. having a long usage life
2. high absorptance
3. checking equipment imported from Germany
new unpressurized all-glass solar vacuum tube
CCC, CE, ISO9001 Certificate
Specification
Structure: Two concentric borosilicate glass tubes
Material: Borosilicate glass 3.3
Outer tube diamete: Φ70/Φ84
Inner tube diameter: Φ30/Φ37
Length: 70-2000mm;84-2000mm
Coating: triple-target, purple
Glass thickness: 1.6mm/1.8mm/2.0mm
Vacuum degree: P<5*10-3Pa
Thermal expansion: 3.3*10-6/°C
Insolation temperature: >200°C
Absorptance: >95%
Emittance: <4%
Heat loss: <0.8W(m2°C)
Maximum strength: 0.8Mpa
Resist cold: -35°C
Resist hail: 25mm/30mm/35mm
Resist wind: 30m/s
Start-up temperature: <=25°C
Lifetime: 15 years
new unpressurized all-glass solar vacuum tube