Evacuated Vacuum Tube

Each Evacuated Vacuum Tube consist of two glass tubes made from extremely strong borosilicate glass The outer tube is transparent allowing light rays to pass through with minimal reflection, The inner tube is coated with a special selective coating (AL-N/AL) which features excellent solar radiation absorption and minimal reflection properties, The top of the two tubes are fused together and the air contained in the space between the two layer of glass is pumped out while exposing the tube to high temperatures, This "evacuation " of the gasses form a vacuum, which is an important factor in the performance of the evacuated tubes

Evacuated tube basic specifications :
Length(nominal) : 1500mm/1800mm
Outer tube diameter : 58mm
Inner tube diameter : 47mm
Glass thickness : 1.6mm
Thermal expansion : 3.3*10-6A C
Material Borosilicate : Glass3.3
Absorptive Coating : Graded Al-N/Al
Absorptance : >92%(AM1.5)
Emittance : <8%(80A C)
Vacuum : P<5*10-3Pa
Stagnation Temperature : >200A C
Heat Loss : <0.8W/(m2A C)
Maximum Strength : 0.8MPa

Established in 1991 , Changzhou Longquan Solar Energy Manufacture Co., Ltd. has made a name for itself in the list of top suppliers of Water Heater in China. The supplier company is located in Changzhou, Jiangsu and is one of the leading sellers of listed products.
Changzhou Longquan Solar Energy Manufacture Co., Ltd. is listed in Trade India's list of verified sellers offering supreme quality of Solar Geyser, Vacuum Tube Solar Heater, Compact Non-Pressurized Solar Water Heater etc. Buy Water Heater in bulk from us for the best quality products and service.

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