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solar evacuated tube collector parameter
Configuration | Gold purple solar collector tube | |
Glass thermal expansion coefficient | 3.3×10-6/°C | |
Diameter of outer tube | 58mm | |
Length of outer tube | 1600mm | 1800mm |
Diameter of inner tube | 47mm | 47mm |
Length of inner tube | 1565mm | 1765mm |
Thickness | 1.6mm | |
Transmittance of cover tube | 0.91 | |
Solar selective absorbing coating | Golden purple tube | |
Solar absorptance(AM1.5) | 0.9 | |
Emittance(80°C) | 0.05 | |
Stagnation Temperature | ≥200°C | |
Heat loss coefficient | ≤0.65 | |
Impact resistance | Withstand hailstone of 25 mm in diameter | |
Strength(pressure tested) | 1MPa | |
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Free samples will be sent on request.