Goldene Rose Drei Schicht Sonnen Vacuum Tube

Structure All-Glass Double-Tube Co-Axial Structure Glass Material High Borosilicate 3.3 Glass External Pipe Diameter & Thickness dia.=47±0.5mm &=1.6mm, dia.=58±0.5mm &=1.6mm, dia.=70±0.5mm &=2.0mm, Internal Pipe Diameter & Thickness dia.=37±0.5mm &=1.6mm, dia.=47±0.5mm &=1.6mm, dia.=58±0.5mm &=1.6mm, Pipe Length 1500mm, 1600mm, 1700mm, 1800mm, 1900mm, 2000mm Absorptive Coating Property Structure AL/AL-ALN(H)/AL-ALN(L)/ALN Sediment Method Single Layer Magnetron Sputtering Plating Specific Absorption as=0.88 0.91(AM1.5) Emission Ratio 0.05 0.075(80°C±5°C) Vacuum P≤2.0×10-3Pa Idle Sunning Property Parameters Y= 220 260m²°C/KW Solar Radiation for Obtaining a Preset Water Temperature H≤4.7 MJ/ m²(dia.58) H=4.1 4.4 MJ/ m² H≤3.7 MJ/ m²(dia.47) H=3.1 3.4 MJ/ m² Average Heat Loss Coefficient Ult=0.6 0.7W/( m².°C) Pressure-Endure Ability 0.6Mpa Absorptive Coating Property Structure Lifetime 15 Years