Solar vacuum tubes are very similar to a well build thermos. The air in between two glass layers is sucked out during the manufacturing to form a vacuum.
|Flow type||Heat pipe|
|Heat pipe material||T2 copper|
|Heat pipe size||Top condenser: Ø14* 1mm;|
|Body: Ø8* 0.7mm|
|Tube diameter||φ47/1500mm or φ58/1800mm|
|Solar vaccum glass tube||High boron-silicon|
|Coating of absorber on glass tube||Al-N-Al,Copper,Stainless steel|
|fins around heat pipe||long Aluminum(1.68m)|
|Thickness of vacuum tube(mm)||1.6|
|Heat transfer liquid||Water, Anti-freeze Fluid (Water-Glycol)|
|Max working temp||300C|
|Thermal Expansion||3.3×106° C|
|Emittance||< 8% (80° C)|
|Heat Loss||< 0.8W / (m² ° C)|
The riwatt temperature-controlled solar heat pipe adopts a different heat transfer mode from the traditional copper-water heat pipe，The heat transfer capacity of a single heat pipe is not limited, which can meet the large heat transfer requirements of CPC solar collectors.
The internal pressure of riwatt temperature-controlled solar heat pipe is positive pressure (that is, higher than atmospheric pressure), there is no life problem caused by reduced vacuum, the effective life of the product is greater than 15 years.
The traditional gravity solar heat pipe does not have a temperature control mechanism and cannot solve the overheating problem of the system at the engineering application level.
Therefore, in actual engineering applications, when the heat is excessive, the pressure can only be relieved through the pressure relief valve, or the heat collection area is artificially reduced by covering.
The riwatt temperature control solar heat pipe has an intelligent temperature control function. The maximum temperature of hot water in the solar system water tank can be controlled at 80 ℃.
The Riwatt temperature control heat pipe solar collector has no restrictions on the installation angle. The heat pipe angle is between 0 ° -180 ° and can be conducted without barriers. The solar collector can be installed in various ways such as vertical and horizontal, can replace U-type tube solar collector and horizontal heat pipe solar collector.
1.the material tube is heavier
2.the coating time is longer
3.we have equipment imported from Germany to guarantee the quality
Material: high borosilicate 3.3 glass.
Structure: all-glass double-tube co-axial structure.
Color: blue or purple golden.
Size: 47mm×1500mm, 47mm×1800mm; 58mm×1500mm, 58mm×1800mm, 58mm×2000mm; 70mm×2000mm, 70mm×2100mm.
Warranty: 15 years.
High absorptance: 93%~96%(AM1.5).
Low emittance: 0.04~0.06(80°C±5°C).
|Three Target & Single Target Vacuum Tube Comparison|
|Model||Three-target vacuum tube||Single-targert vacuum tube|
|Glass tructure||All-glass doube-tube co-axial structure|
|Glass material||High borocilicate 3.3 glass|
|Diameter * length||47*1500mm,1.6mm thickness, inner tube diameter:37mm|
|58*1800mm,1.6mm thickness, inner tube diameter:47mm|
|70*2000mm,2.0mm thickness, inner tube diameter:58mm|
|Sediment method||Three target magnetron sputtering plating||single target magnetron sputtering plating|
|Idle suning property parameters||26D-3002.C/KW|
|Model Specification||Packing count(pieces)||Package Size(CM)||Packing||40HQ’ pcs|
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