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| Specification | ||
| 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, 1800mm, 2100mm | |
| Absorptive Coating Property | Structure | Cu/SS-ALN(H)/SS-ALN(L)/ALN |
| Sediment Method | Three Layer Magnetron Sputtering Plating | |
| Specific Absorption | as=0.92~0.96(AM1.5) | |
| Emission Ratio | 0.01~0.03(80°C±5°C) | |
| Vacuum | P≤2.0×10-3Pa | |
| Idle Sunning Property | Y= 260 ~ 300m²°C/KW | |
| Solar Irradiation for Obtaining a Preset Water Temperature | H≤4.7 MJ/ m²(dia.58) | H=3.7~4.2 MJ/ m² |
| H≤3.7 MJ/ m²(dia.47) | H=2.9~3.2 MJ/ m² | |
| Average Heat Loss Coefficient | Ult=0.4~0.6W/( m².°C) | |
| Pressure-Endure Ability | 0.6Mpa | |
| Hail-Endure Ability | 30mm | |
| Lifetime | 15years | |
Three Target Solar Vacuum Tube