Solar Heating Vacuum Tube, DY-026

• Product:
  Solar Heating Vacuum Tube
  
  
• Model Number:
  DY-026
  
  
• Description:
  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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