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The Evacuated (Vacuum) Tube:

Each evacuated tube is composed of two concentric glass tubes; the inner one is coated with highly selective layer and it converts solar radiation into thermal energy. As for the outer one, it is used as a cover to keep the vacuum. Both tubes are fused together and the gap between them is evacuated to achieve excellent thermal vacuum insulation.

Why Vacuum Tubes?

Vacuum (evacuated) tubes works like a thermos flask, which uses vacuum to provide thermal insulation. Once the evacuated tube absorbs the radiation - the sun and converts it to heat - he vacuum helps maintain temperature. The vacuum insulation makes evacuated tube collectors outpace the traditional flat plate collectors in performance.

 

 

 

Evacuated tubes
Glass material borosilicate glass
Glass thickness 1.6mm
Coating graded AL-N/AL
Degree of vacuum >5x10-3 Pa
Hail proof 25mm
Absorption coefficient >0.92
Emittance <0.08
Average heat loss coefficient < 0.6 W(m2.C° )-1
Maximum temperature 200C
Service life 15-20 years
Size of single tube 58x1800 mm
Hot Water Tank
Structure Dual layered water cylinders
Inner tank material stainless steel 304 Food grade
Inner tank thickness 0.4mm
Outer tank material PVDF Coated galvanized steel
Outer tank thickness 0.4mm
Tank insulation 50mm  polyurethane
Silicon rubber UV stabilized high temperature
Cold Water Inlet ½”
Hot Water Outlet ½”
Packing Recycled Card Board (Export)
Manufacturer Warranty 5 years

 


Why vacuum tubes?

 Vacuum (evacuated) tube works like well-known, a thermos flask, which uses vacuum to provide thermal insulation; once the evacuated tube absorbs the radiation - the sun and converts it to heat; the vacuum helps keep the heat. The vacuum insulation makes evacuated tube collector excels the traditional flat plate collector in performance.