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China, Chinese Solar Evacuated Tubes with High Absorption Rate1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Solar Renewable EnergySolar Vacuum TubeSolar Vacuum TubesEvacuated Tubes for Solar Water Heaters
Shandong Longguang Tianxu Solar Energy Co., Ltd.
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Product Description Product DescriptionSOLAR WATER HEATER ACCESSORY: SOLAR VACUUM TUBE Solar vacuum tube is the core parts of solar water heater. It absorbs solar energy converting it into heat for hot water heating. Solar vacuum tubes have already been used more than 20 years in China. Each solar evacuated tube consists 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 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 layers of glass is pumped out while exposing the tube to high temperatures. This "evacuation" of the gasses forms a vacuum, which is an important factor in the performance of the evacuated tubes. Product ProcessProduct ParametersTube StructureAll-glass double deck co-axial structureGlass material Borosilicate 3.3 glassOuter tube diameter and glass thicknessΦ58+/-0.7mm; glass thickness 1.6+/-0.15mmInner tube diameter and glass thickness Φ47+/-0.7mm; glass thickness 1.6+/-0.15mmTube Length1800mmAbsorber coating Coating Material Cu/SS-AIN(H)/SS-AIN(L)Sediment methodThree targets magnetron sputtering platingAbsorptivity0.93~0.96Emittance≤6.0%(80oC+/-5oC)Vacuum degreeP ≤5.0X10-3(Pa)Transmittance of glass tube T ≥0.89(AM1.5 ISO9806-1:1994Stagnation parameterY: 240~250 m2oC/KWAverage heat loss ULT≤0.6 W/(m2*oC)Hail resistanceΦ25mmPressure endure0.6 MPARemarksCover glass tubeProtect the whole tube.The space between the cover glass tube and the inner glass tube is mechanically evacuated to create a vacuum environmentInner glass tubeFilled with heat transfer fluid (generally water) and directly plugged to the water storage tankSelective absorbing coatingAbsorbs solar radiation and transfers to the fluid in the inner tube.RetainerKeeps the inner tube fixed.GetterAbsorbs the residual air in the space between the cover glass tube and inner glass tube. Company ProfileSince its establishment in 2002, Shandong Longguang Tianxu Solar Energy Co., Ltd (hereinafter referred to as "Tianxu") has always engaged itself in the R&D, production, sales and service of high borosilicate glass tubes and new energy products including solar water heaters, solar vacuum tubes, solar heat collecting project, air source heat pump, photovoltaic products, etc. Tianxu has 10 sets of electric furnaces, 70 sets of solar vacuum tube production line and 3 sets of solar water heater production lines. The annual output has reached one million tons of high borosilicate glass, over 16 million solar vacuum tubes makes Tianxu the largest manufacturing base of high borosilicate glass tubes and solar vacuum tubes. In 2015, Tianxu established a joint venture company with Beijing Tsinghua Solar Co., Ltd- the solar vacuum tube technology initiator in the world. The newly established company has the world's most advanced solar vacuum tube production lines. Strategic PartnershipPackaging & ShippingOur products have been widely exported to many countries, like Vietnam, India, Mexico, Syria, Korea, Dubai, Etc. we are serving the top brands in solar water heaters for each country. Our yearly export quantity is 600 containers. Certifications
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