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