Description

Structure All-glass double-tube co-axial structure Glass material High borosilicate 3.3 glass External pipe diameter and thickness Φ=*7±0.7mm &=1.6mm Φ=*8±0.7mm &=1.6mm Φ=*0±0.7mm &=2.0mm Internal pipe diameter and thickness Φ=*7±0.7mm &=1.6mm Φ=*7±0.7mm &=1.6mm Φ=*8±0.7mm &=2.0mm Pipe length **0mm ***0mm ***0mm ***0mm ***0mm ***0mm ***0mm ***0mm Absorbing coating property Structure Sediment method Specific absorption Emission ratio Cu/SS-ALN(H)/SS-ALN(L)/ALN 3 target magnertron sputtering plation as=0.*3~0.*6(AM1.5) εh=0.*4~0.*6(*0±5) Vacuum tightness P�5.0X***3Pa Idle sunning property parameters Y=**0~**0m2./KW Solar irradiation for obtaining a preset water temperature H�4.7MJ/m2(Φ*8) H�3.7MJ/m2(Φ*7) H=3.7~4.2MJ/m2 H=2.9~3.2MJ/m2 Average heat loss coefficient ULT=0.4~0.6W/(m2