heat pipe solar vacuum tube

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Structure
All-glass couble-tube co-axial structure
Glass material
High borosilicate 3.3 glass
External pipe diameter and thickness
Φ=47±0.7mm&=1.6mm Φ=58±0.7mm&=1.6mm
Φ=70±0.7mm&=2.0mm
Internal pipe diameter and thickness
Φ=37±0.7mm&=1.6mm Φ=47±0.7mm&=1.6mm
Φ=58±0.7mm&=1.6mm
Pipe length
800mm 1200mm 1500mm 1600mm 1800mm 1900mm
2000mm 2100mm
Absorptive coating property
Structure Cu/SS-ALN(H)/SS-ALN(L)/ALN

Sediment method 3 targets magnetron sputtering plating

Specific absorption 0.93-0.96

Emission ratio 0.4-0.6
Vacuum tightness
5.0×10¯³ Pa
Idle sunning property parameters
260—300 m².C/KW
Solar irradiation for obtaining a preset water temperature
Φ=58 H≤4.7MJ/m² H=3.7-4.2MJ/m²


Φ=47 H≤3.7MJ/m² H=2.9-3.2MJ/m²
Thermal conductivity of HEAT PIPE
2×10
+4
—
1.6×10
+
w/(m)
The material of HEAT PIPE
Copper and phase change
Resistant Hail
≤25mm
Useful life
15 years



Baoguang heat collector vacuum tubes approved by CGC-SOLAR.

Heat pipe vacuum tube has advanced heat transferring,when the excellent vacuum tube selective absorption coating combination with copper heat pipe,it could be started quickly to turn solar energy into thermal energy even during cloudy days.

The tubes can resist impact from hail of diameter 25mm and are suitable for cold area in winter.

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