Technical Data All-glass evacuated solar collector tubes
Material Borosilicate Glass 3.3
Absorptance of SELECTIVE COATING ≥0.90 (AM1.5)
Emission of SELECTIVE COATING ≤0.08 (80℃±5℃)
Vacuum <5 ×10-3 Pa
Stagnation Temperature >200M2*℃/kw
Solar radiance exposure ≤3.0...