Solar water heater evacuated glass tube

Heat pipe solar water heater tube, or for solar collector, high pressure, anti-freezen., higher heat efficiency
Packaging & Delivery
Packaging Detail:
Carton
Delivery Detail
5-7days
Features:
1 High Absorption (>0.96)
2 Low Emittance (<0.04)
3 High Thermal Efficiency
4 Heating up quickly
5 Keeping warm long
6 Easy install
7 Anti-freezen
All-glass Evacuated Solar Collector Tubes with heat pipe, more efficiency and reliable.


Length
1500mm
1800mm
Outer tube diameter
47mm
58mm
Inner tube diameter
37mm
47mm
Weight
1.3kg
2.2kg
Glass thickness
1.8mm/2.0mm/2.2mm
1.8mm/2.0mm/2.2mm
Material
Borosilicate Glass 3.3
Borosilicate Glass 3.3
Absorptive coating
Graded A1/N/A1
Graded A1/N/A1
Vacuum degree
P<5*10 -3 Pa
P<5*10 -3 Pa
Thermal expansion
3.3*10 -6 /°C
3.3*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 strength
0.8Mpa
0.8Mpa
Resist cold
-35 °C
-35 °C
Resist hailstone
Ø 25mm
Ø 25mm
Resist wind
30m/s
30m/s
Start-up temperature
<=25°C
<=25°C