- Contact Person : Ms. wen wendy
- Company Name : Changzhou Sunfield Solar Technology Co., Ltd.
- Tel : 86-519-82526028
- Fax : 86-519-82525310
- Address : Jiangsu,changzhou,NO.5 changjin road,jintan economic zone,changzhou city, Jiangsu Province,China
- Country/Region : China
- Zip : 213212
vacuum tube header pipe Heat pipe
Customized Solar Water Heater Accessories Vacuum Tube, Evacuated Glass Tubes
Solar Water Heater Accessory Vacuum tube (evacuated tube)
1.Specifications:
Structure | All-glass concentric dual tube geometer | |
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) | |
Absorbingcoatingproperties | Configulation | 1200(±5mm) 1500(±5mm)1700-1800(±5mm)2000( ±5mm) |
Method to deposition | Graded A1-N/A1 solar selective absorbing coating | |
absorptance | as 0.88-0.93 | |
Emittance | Σn:-.08-0.04 | |
Vacuum | p ≤ 2 × 10-3pa | |
Stagnation parameter | >250M2C/KW | |
Solar radiation exposure for obtaining a preset water temperature | <2.8MJ/M2 | |
Average heat loss coefficient | <0.8W(M2C) | |
Lifetime | 15years | |
2.Applications:
Vacuum tubes are used for solar water heaters and solar collectors.
vacuum tube header pipe Heat pipe
