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All-glass Evacuated Solar Collector Tube with Heat Pipe (SOLAR WATER HEATER,ISO9001,SOLAR KEYMARK,CE,SRCC,EN12975)
All-glass Evacuated Solar Collector Tube with Heat Pipe (SOLAR WATER HEATER,ISO9001,SOLAR KEYMARK,CE,SRCC,EN12975)
Supplier Info
[China Supplier]
Contact Person : Ms. Zhang Lucia
Tel : 86-519-88056062
Fax : 86-519-88056063
Product Detail
The tube structure is between all-glass evacuated tube and metal-glass evacuated tube with heat pipes.

All-glass Evacuated Solar Collector Tube with Heat Pipe

 The principle behind heat pipe's operation is actually very simple. Freeze Protection:Even though the heat pipe is a vacuum and the boiling point has been reduced to only 25-30oC (86oF), the freezing point is still the same as water at sea level, 0oC (32oF). Because the heat pipe is located within the evacuated glass tube, brief overnight temperatures as low as -20oC (14oF) will not cause the heat pipe to freeze. Plain water heat pipes will be damaged by repeated freezing. The water used in Sunflower solar heat pipes still freezes in cold conditions, but it freezes in a controlled way that does not cause swelling of the copper pipe.

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Evacuated Solar Collector Tube:

Length1500mm1800mm
Outer tube diameter47mm58mm
Inner tube diameter37mm47mm
Weight1.3kg2.2kg
Glass thickness1.6mm1.6mm
MaterialBorosilicate Glass 3.3Borosilicate Glass 3.3
Absorptive coatingGraded A1/N/A1Graded A1/N/A1
Vacuum degreeP<5*10 -3 PaP<5*10 -3 Pa
Thermal expansion3.3*10 -6 /°C3.3*10 -6 /°C
Insolation Temperature>200°C>200°C
Absorptance>93%>93%
Emittance<8%<8%
Heat loss<0.8W/(m2°C)<0.8W/(m2°C)
Maximum strength0.8Mpa0.8Mpa
Resist cold-35 °C-35 °C
Resist hailstoneØ 25mmØ 25mm
Resist wind30m/s30m/s
Start-up temperature<=25°C<=25°C

  Heat Pipe:

Item No.47mm×1.5M58mm×1.8M
Copper MaterialTP2 Non-oxo Copper TP2
MediumInorganic Medium
Pipe diameter8mm
Dimension of heat exchange end14mm×64.5mm
Weight196g240g
Length1370mm1680mm
Pipe thickness0.75mm
Start-up temperature<25°C
Insolation Temperature>200°C
Power125W

  Absorber (Heat transfer) Fin: 

 
MaterialAluminum
Thickness0.15mm
Shape (Flat or Cylindrical)Cylindrical
Length350mm420mm
Quantity6 pcs / 3 pairs8 pcs / 4 pairs

Heat pipe Specification:

 
Item No.Specification
Diameter of solar tubeLength of solar tube
SFVB4715Ø47mm1.5M
SFVB5818Ø58mm1.8M
    

All-glass Evacuated Solar Collector Tube with Heat Pipe (SOLAR WATER HEATER,ISO9001,SOLAR KEYMARK,CE,SRCC,EN12975)

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