solar collector tube, vacuum tube

详情

Three-high all-glass vacuum heat collection tube property and specification: 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 Absorptive coating property: Structure: Cu/SS-ALN(H)/SS-ALN(L)/ALN Deposition Method: 3 high magnetron sputtering plating Absorption than: As=0.*3~0.*6(AM1.5) Emission ratio: 0.*4~0.*6(*0℃±5℃) Vacuum tightness: P≤*0x***3 帕(Pa) Idle sunning property parameters: Y=**0~**0m2 . ℃/KW Solar irradiation for obtaining a preset water temperature: H≤4.7MJ/m2 (Φ*8) H=3.7~4.2 MJ/m2 H≤3.7MJ/m2 (Φ*7) H=2.9~3.2 MJ/m2 Average heat loss coefficient:ULT=0.4~0.6W/( m2 . ℃)