solar energy vacuum tube(diameter:47/58/70mm length:1500/1800/2000/2100mm)
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Quality/Safety Certification: 0.00
1.manufacturer of solar vacuum tube
2.solar vacuum tube for solar water heater
3.diameter--47/58/70mm length--1.5/1.8/2/2.1m
Normal all glass vacuum tube
| Specification: | ||||||
| Structure | All-glass double-tube co-axial structure | |||||
| Glass material | High borosilicate 3.3 glass | |||||
| External pipe diameter and thickness | dia.=47±0.7mm &=1.6mm dia.=58±0.7mm &=1.6mm | |||||
| dia.=70±0.7mm &=2.0mm | ||||||
| Internal pipe diameter and thickness | dia.=37±0.7mm &=1.6mm dia.=47±0.7mm &=1.6mm | |||||
| dia.=58±0.7mm &=1.6mm | ||||||
| Pipe length | 1500mm 1600mm 1700mm 1800mm1900mm 2000mm | |||||
| Absorptive coating property | Structure | AL/AL-ALN(H)/AL-ALN(L)/ALN | ||||
| Sediment method | Single target magnetron sputtering plating | |||||
| Specific absorption | as=0.88~0.91(AM1.5) | |||||
| Emission ratio | 0.05~0.075(80°C±5°C) | |||||
| Vacuum tightness | P≤5.0×10-³Pa | |||||
| Idle sunning property parameters | Y= 220 ~ 260m²°C/KW | |||||
| Solar irradiation for obtaining a preset water temperature | H≤4.7 MJ/ m² | H=4.1~4.4 MJ/ m² | ||||
| H≤3.7 MJ/ m² | H=3.1~3.4 MJ/ m² | |||||
| Average heat loss coefficient | Ult=0.6~0.7W/( m².°C) | |||||
Solar water tube working principle:
Certificate:
High borosilicate 3.3 glass tube for solar vacuum tubes:
Technological process:
Workshop:
Products and packing :
Main Advantages of solar vacuum Tubes:
1.No scaling
2.No blasting
3.water-tight
4.Anti aging
5.low temperature-resistant
6.high temperature-resistant
7.Resistant to high temperature
8.fast heat transfer
9.high heat conductivity
10.bearing pressure
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