Evacuated heatpipe collector for solar water heater

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Evacuated heatpipe collector for solar water heater
Posting date : Jan 29, 2007
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85-
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Detailed Description
1.glass tube material: borosilicate glass 3.3 ,use LINO vacuum tube. 2.absorptive coating: graded AL-N-AL selective absorption. 3.vacuum degree: P<5* 10-3 PA 4.thermal expansion: 3.3*10-6/0C 5.insolation temperature: >2000C 6.absorptance: >93% 7.emissivity: <8% 8.resist cold: -350C 9.resist hailstone: diameter 25mm 10.resist wind: 30m/s 11.start-up temperature: <250C 12.life time: 15 years 13.unit tube weight: 1.3 kg for 47*1500 , 2.2 kg for 58*1800 . 14.copper pipe thickness: 0.7mm 15.glass thickness: 1.6mm 16.Package:carton 17.Head tube: copper. 18.Material of connect box: SUS304-2B stainless steel. 19.Heat Preservation Layer: Rock wool with 30mm thickness. 20.Material of supporter: stainless steal profile bar ,with 1.2mm thickness.

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