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Evacuated Tube
Three-target Evacuated Tube
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Products Description
Comments
Just like an automobile engine, the computer CPU, evacuated tube is the core component of the solar water heater. Its performance lies on the actual film coating technology. ZJTEX Company adopted a new graded coating technology of Qinghua University, and tube raise the heat.
| Structure | All-glass concentric dual tube geomer | |
| Glass material | Borosilicate glass | |
| Outer tube diameter and thickness | Φ=47±0.7mm & =1.5mm Φ=58±0.7mm & =2mm Φ=70±0.7mm & =2mm |
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| Inter tube diameter and thickness | Φ=37±0.7mm & =1.5mm Φ=47±0.7mm & =1.6mm Φ=58±0.7mm & =1.6mm |
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| Tube Length | 1200(±5mm)1500(±5mm) 1700-1800(±5mm) 2000(±5mm) |
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| Absorbing coating properties |
Configuration | 1200(±5mm) 1500(±5mm) 1700-1800(±5mm) 2000( ±5mm) |
| Mothod to deposition | AL-N/A1 selective absorptive coating | |
| absorptance | as 0.88-0.93 | |
| Remittance | Σn:-.08-0.04 | |
| Evacuated | p ≤ 2 × 10-3 PA | |
| Stagnation parameter | ＞250M2C/KW | |
| Sloar rediance exposure for obtaining a preset water temperature |
＜2.8MJ/M2 | |
| Average heat loss coefficient | ＜0.8W(M2C) | |
| Lifetime | 15years | |