Box of 10 fully encased in styrofoam and cardboard packaging
93%-94% efficiency evacuated solar tubes
Will also suit most other third party solar hot water systems with a 58mm insert.
10 year warranty on North Solar vacuum tubes
Single Target All Glass Vacuum Tube
- Efficiency 93%-94%
- Vacuum tube size: 58*1800mm
- Vacuum tube composition: single target vacuum tube composed of super hard borax and silica glass, efficiency 93%-94%,58*1800mm
- Hail rating: 25mm (dia)
Structure | All-glass double-tube co-axial structure /Cu/SS-ALN(H)/SS-ALN(L)/ALN | |
Glass material | High borosilicate 3.3 glass | |
Outer tube diameter and thickness | Φ=58±0.7mm & =2mm | |
Inter tube diameter and thickness | Φ=58±0.7mm & =1.6mm | |
Tube Length | 1800(±5mm) | |
Absorbing | Idle sunning property parameters | Y=260~300㎡. ℃/KM |
Sediment method | Three target magnetron sputtering plating | |
Specific absorption | 0.93~0.96(AM1.5) | |
| Emission ratio | Σn: 0.04~0.06(80℃±5℃) | |
Vacuum tightness | P≤5.0×10-3(Pa) | |
Stagnation parameter | >250M2C/KW | |
Solar irradiation for obtaining a preset water temperature | H≤4.7MJ/㎡(￠58) H=3.7~4.2MJ/㎡ | |
Average heat loss coefficient | <0.4~0.6W/(㎡. ℃) | |
Lifetime | 15years | |
Heat pipe composition:
- Copper heat pipe
- Silicone gasket
- Aluminum fin
- Vacuum tube
Working principle
- Inside the heat pipe is a vacuum closed cavity of 1.3*(10-1~10-4)Pa, and filled with working liquid
- When one side is heated, the liquid evaporates in the core, the steam flows to the other side under low pressure and emits heat which condenses to liquid, and the liquid flows to evaporative side be capillarity along the porous material.
This endless cycle allows the heat to be transferred from one side to the other side.
Evacuated vacuum tube (pressurised) - Box of 10
- Brands North Solar
- Product Code:NS-VTP1800x10
- Availability:100
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675