New ripple all glass solar vacuum tube
Product Detailed
New ripple all glass solar vacuum tube:
1.High absorption efficiency
2.workability in tough weather
3.Low heat loss
Tube Length | 1200(±5mm)1500(±5mm) | |
Absorbing | Configulation | 1200(±5mm) 1500(±5mm) |
Mothod to deposition | Graded A1-N/A1 solar selectuve absorbing coating | |
absorptance | as 0.88-0.93 | |
Emittance | Σn:-.08-0.04 | |
Vacuum | p ≤ 2 × 10-3 | |
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 |