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All glass three targets solar vacuum tube Manufacturer
- 30000 Piece / Pieces per Month
- Qingdao
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Product Details
Place of Origin: | Shandong, China | Brand Name: | Guangpu | Model Number: | 47mm-1500mm/1600mm/1800mm 58-1500mm/1600mm/1800mm/2000mm/2100mm |
Type: | Vacuum Solar Collector | Application: | Water Heater | Pipe Material: | Glass |
Product Description
Specifications
1.high pressure withstanding ability2.certificate:CE ISO9001:2008
3.high absorption efficiency
4.testing machine:UV 3600
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 in an environment of entire nitrogen. The selective coating is more stable when stainless steel is added, and the absorptance is higher. Since copper is more effective than aluminum in reducing radioactive heat loss, so heat loss is greatly cut down when copper is coated as the infrared-reflection layer.
The vacuum 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 in tough weather. That’s why it is suitable to be used in areas and regions where is very cold or always cloudy.
Technical Specification
1.Structure: Two concentric borosilicate glass
2.Material: Borosilicate glass 3.3
3.Glass thickness: 1.6mm
4.Thermal expansion: 3.3 × 10-6°C
5.Outer/Inner tube diameter: 47mm/37mm
58mm/47mm
6.Outer tube diameter× Length: 47mm×1500m/1600mm/1800mm
58mm×1500mm/1600mm/1800mm/2000mm/2100mm
7.Selective coating: SS-AlN/Cu
8.Absorptance: 0.90-0.95(AM1.5)
9.Emittance: 0.04~0.06(80°C±5°C)
10.Vacuum degree: P≤5.0×10-3 (Pa)
11.Stagnation temperature: 260~300°C
12.Heat loss: ULT= 0.4~0.6w/(m2.°C)
13.Resistance: Hail diameter≤ 25mm
14.Solar irradiation for obtaining a preset water temperature rise in an all-glass evacuated solar collector tube under stagnation: H=3.7~4.2 MJ/m2(58mm); H=2.9~3.2MJ/m2(47mm)
Contact Us
- Shandong Guangpu Solar Energy Project Co., Ltd.
- Contact namexinjiang chi
- Phone86-632-5665199
- AddressNo. 156, Shanguo South Road, Tengzhou
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