Solar Heating Vacuum Tube, DY-026, DY-026, Heat Pipe Vacuum Tube, Water Heater Accessory

Structure: All-glass concentric dual tube geomer
Glass material: Borosilicate 3.3 class
Absorbing coating properties: Graded A1-N/A1 solar selective absorbing coating.
Stagnation parameter: >250M2C/KW
Solar radiance exposure for obtaining a preset water temperature: > 2.8MJ/M2
Lifetime: Normal useful 15 years
Reflectance of the glass tube:7.2%
Absorption of the glass tube 1.6%
Cover glass tube, transmittance 0.90


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