Specification :

Metal-Glass Evacuated Solar Collector Tube with Heat Pipe
Technical Data

1. Structure:
All-glass Concentric Dual Tube Geometer

2. Glass Material:
Borosilicate Glass

3. Out Tube Diameter and Thickness:
Æ47 0.7mm & - 1.5mm
Æ58 0.7mm & - 2.0mm
Æ70 0.7mm & - 2.0mm

4. Inner Tube Diameter and Thickness:
Æ37 0.7mm & - 1.5mm
Æ47 0.7mm & - 1.6mm

5.Tube Length:
1200(±5mm)
1500(±5mm)
1700(±5mm)
2000(±5mm)

6. Absorbing Coating Properties:
6.1 Construction:
Graded Al-N/Al Solar Selective Absorbing Coating
6.2 Method to Deposition: DC Reactive Sputtering
6.3 Absorbance91%
6.4 Emittance8%(80)

7. Vacuum: P5×10-3Pa

8. Stagnation Parameter: -230M2/KW

9. Solar Radiance Exposure
for Obtaining a preset water temperature: -2.8MJ/ M2

10. Average Heat Loss Coefficient: -0.8W/ M2

11. Lifetime:15 Years