solar vacuum tube

详情

Structure: all-glass double tube co-axial structure Glass material: high borosilicate 3.3 glass External pipe diameter and thickness: =*7±0.7mm &=1.6mm =*8±0.7mm &=1.6mm Internal pipe diameter and thickness: =*7±0.7mm &=1.6mm =*7±0.7mm &=1.6mm Pipe length: ***0mm ***0mm ***0mm ***0mm ***0mm ***0mm Absorptive coating property structure: AL/AL-A LN(H)/SS-A LN(L)/A LN Deposition method: single target magnetron sputtering plating Absorption than: as=0.*0~0.*3(AM1.5) Vacuum tightness: P≤*0×***3Pa Idle sunning property parameters: Y=**0~**0 m2./KW Solar irradiation for obtaining a preset water temperature: H≤4.7MJ/ m2(*8) H=4.1~4.4MJ/ m2 H≤3.7MJ/ m2(*7) H=3.1~3.4MJ/ m2 Average heat loss coefficient: ULT=0.6~0.7W/( m2.)