Model: | - |
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Brand: | RUNSUN OEM |
Origin: | Made In China |
Category: | Metallurgy , Mining & Energy / New Energy / Solar Energy |
Label: | solar vacuum tube , vacuum tubes , solar water heater |
Price: |
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Min. Order: | 100 pc |
(Glass-Glass) tubes consists of two glass tubes which are fused together at one end. The inner tube is coated with a selective surface that absorbs solar energy well but inhibits radiative heat loss.
The air is withdrawn ("evacuated") from the space between the two glass tubes to form a vacuum, which eliminates conductive and convective heat loss. These tubes perform very well in overcast conditions as well as low temperatures. Because the tube is 100% glass, the problem with loss of vacuum due to a broken seal is greatly minimized. Glass-glass solar tubes may be used in a number of different ways, including direct flow or heat pipe configuration. Deosun uses a high efficiency heat pipe and heat transfer fin design to conduct the heat from within the evacuated tube up to the header.
Technical data table
Model tape |
TG47 |
TG58 |
Length |
1500mm |
1800 |
Outer tube diameter |
47mm |
58mm |
Inner tube diameter |
37mm |
47mm |
Glass thickness |
1.5mm |
1.5mm |
Thermal expansion |
3.3x10-6℃ |
3.3x10-6℃ |
Material |
Borosilicate Glass 3.3 |
Borosilicate Glass 3.3 |
Absorptive Coating |
AL/N/AL |
AL/N/AL |
Absorption coefficient |
>90% |
>90% |
Emission coefficient |
<10% |
<10% |
Vacuum |
P<5x10-2Pa |
P<5x10-2Pa |
Stagnation Temperature |
>200℃ |
>200℃ |
Net weight |
1.20kg |
2.23kg |
Changzhou Runsun Energy Technology Co., Ltd | |
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Country/Region: | Jiang Su - China |
Business Nature: | Manufacturer |
Phone: | 86-13915027733 |
Contact: | Athena (manager) |
Last Online: | 18 Jun, 2013 |