All-glass Evacuated Tubes

All Glass evacuated solar collector tubes are the key component of the Solar Collectors. Each evacuated tube consists of two glass tubes. The outer tube is made of extremely strong transparent borosilicate glass that is able to resist impact from hail up to 25mm in diameter. The inner tube is also made of borosilicate glass, but coated with a special selective coating, which features excellent solar heat absorption and minimal heat reflection properties. The air is evacuated from the space between the two glass tubes to form a vacuum, which eliminates conductive and convective heat loss. Unlike other types of solar collectors, evacuated tube solar collectors still provide excellent results on cloudy days. This is because the tubes are able to absorb the energy from infrared rays, which can pass through clouds. Wind and low temperatures also have less of an effect on the function of evacuated tubes when compared to flat plate solar collectors due to the insulating properties of the vacuum
Dimensions:
Inner/Outer Diameter Length Carton Box Type
37/47mm 1500mm 18pcs/box 15pcs/box 24pcs/box
37/47mm 1600mm 18pcs/box
37/47mm 1800mm 18pcs/box
37/47mm 1900mm 18pcs/box
47/58mm 1800mm 10pcs/box
47/58mm 1900mm 10pcs/box
47/58mm 2010mm 10pcs/box
For other special types, please contact with us.
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