solar collector tube
1.First-class raw materials:High borosilicate glass
2.Technology class: Interference film
solar collector tube
product description
1)Lengt(normal): 1500mm /1800mm
2) Outer tube diameter :58mm
3) Inner tube diameter: 47mm
4) Glass thickness : 1.6mm
5) Thermal expansion: 3.3x10-6 oC
6) Material:Borosilicate Glass 3.3
7) Absorptive CoatingGraded: Al-N/Al
8) Absorptance>92% (AM1.5)
9) Emittance<8% (80oC)
10) VacuumP<5x10-3 Pa
11) Stagnation Temperature>200oC
12) Heat Loss<0.8W/ ( m2oC )
13) Maximum Strength0.8MPa
The picture of product
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