Solar Vacuum Tube
$2.8
/piece
price excl.VAT
Negotiable
- Minimal order
- 100 pieces
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Product Specifications
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Product Description
Vaucuum tubes for solar water heater, it's with excellent efficient.
| Strucure | 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 | |
| Inter tube diameter and thickness | Φ =37±0.7mm & =1.5mm Φ =47±0.7mm & =1.6mm Φ =58±0.7mm & =1.6mm | |
| Tube Length | 1200(±5mm)1500(±5mm) 1700-1800(±5mm) 2000(±5mm) | |
| Absorbing coating properties | Configulation | 1200(±5mm) 1500(±5mm) 1700-1800(±5mm) 2000( ±5mm) |
| Mothod to deposition | AL-N/A1 selective absorptive coating | |
| absorptance | as 0.88-0.93 | |
| Emittance | Σn:-.08-0.04 | |
| Vacuum | p ≤ 2 × 10-3 PA | |
| Stagnation parameter | above 250M2C/KW | |
| Sloar rediance exposure for obtaining a preset water temperature | 2.8MJ/M 2 | |
| Average heat loss coefficient | 0.8W(M2C) | |
| Lifetime | 15years | |
Supply Ability
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