Solar Vacuum Tubes

1500

Length(mm)·ª500 ~ 2200f+5mm (special specification per contract)
Weight(kg)·ª1.73f+0.12kg
Outer tube Dia.(mm)·ª47(mm)f+0.6mm
Inner tube Dia. (mm)·ª37(mm)f+0.6mm
Outer tube thickness(mm)·ª1.6f+0.15mms
Inner tube thickness(mm)·ª1.6f+0.15mm

Length(mm)·ª500 ~ 2200f+5mm (special specification per contract)
Weight(kg)·ª2.29f+0.18kg
Outer tube Dia.(mm)·ª58 (mm)f+0.6mm
Inner tube Dia. (mm)·ª47(mm)f+0.6mm
Outer tube thickness(mm)·ª1.6f+0.15mm
Inner tube thickness(mm)·ª1.6f+0.15mm


Material·ªHigh boron-silicon (specially hard) glass 3.3
Film structure·ªGradual change AL-H/AL selective absorbing coated
Sun absorptance·ªlayersfª0.92(AM=1.5) (international standardfª0.86)
Hemisphere emmissivity·ªf_0.086 (80f¦) (international standf_0.09)
Empty solarization parameters·ªfª186¼Of¦/KW(international standardfª175)
Cover tightly solarization amount·ªf_3.6MJ/¼O(international standf_3.8)
Average heat loss coefficient·ªf_0.86W/¼O(international standf_0.90)
Interlayer vacuum·ªf_0.03 Pa (international standf_0.90)
Heat shock resistance·ªUnder the 25f¦ there is no damage after times by using above 90f¦ hot water.
Pressure resistance,can bear·ª0.6Mpa pressure
Hailstibe resustant performance·ªCold water by turns and no damage after strike by hailstone with its grain less than ¬ª25mm.



Package: Export standard Carton