Structure All glass double-tube co-axial structure
Glass material High borosilicate 3.3 glass3.3
External pipe diameter and thickness
Φ =58± 0.7mm &=1.6mm
Φ =70± 0.7mm &=2.0mm
Internal pipe diameter and thickness
Φ =47± 0.7mm &=1.6mm
Φ =58± 0.7mm &=2.0mm
Pipe length 1800mm 1900mm 2000mm 2100mm
Absorption coating property
Structure Cu/SS-ALN(H)/SS-ALN(L)/ALN
Sediment method 3 target magnetron sputtering plating
Absorption ratio as=0.93~0.96(AM1.5)
Emission ratio eh=0.04~0.06(80° C± 5° C)
Vacuum tightness P≤ 5.0*10-³ PA
Idle sunning property parameters Y=260-300m2° C/kw
Solar irradiation for obtaining a preset water tempereture H≤ 4.7MJ/m2 Φ =58 H≤ 3.7-4.2ML/m2
H≤ 3.7MJ/m2 Φ =47 H≤ 2.9-3.2MJ/m2
Average heat loss coefficient ULT-0.4~0.6W/( m2° C)