231 solar tube with copper 58*1800mm/ three target coating heat pipe

solar tube with copper
1. good quality, good price
2,58*1800mm
3. certificate: ISO9001:2000
JIACHEN&SUNSHINE
------offer OEM service/ 15years' lifetime

Solar Heat Pipe with Copper
1.Structure: All-glass double-tube co-axial structure;
2.Glass material: High borosilicate 3.3 glass;
3.External pipe diameter : Φ=47 ;Φ=58;Φ=70
4.Internal pipe diameter and thickness: Φ=37;Φ=47;Φ=58
5.Pipe length: 1500mm;1600mm;1700mm,1800mm;1900mm;2000mm;2100mm
6.Absorptive coating property: Structure:
Al/Cu/SS
7.Absorption ratio: As=0.90~0.93(AM1.5)
8.Emission ratio: 0.04~0.06(80±5)
9.Vacuum tightness: P≤5x10-3 (Pa)
10.Idle sunning property parameters: Y=260~300m2 . /KW
11.Solar irradiation for obtaining a preset water temperature:
H≤4.7MJ/m2 (Φ58) H=3.7~4.2 MJ/m2
H≤3.7MJ/m2 (Φ47) H=2.9~3.2 MJ/m2
12.Average heat loss coefficient:ULT=0.4~0.6W/( m2 . )


Structure
All-glass double-tube co-axial structure
Glass material
High borosilicate 3.3 glass
External pipe diameter&thickness
dia.=47±0.7mm&1.6mm dia.=58±0.7mm&1.6mm dia.=70±0.7mm&2.0mm
Internal pipe diameter&thickness
dia.=37±0.7mm &=1.6mm dia.=47±0.7mm &=1.6mm dia.=58±0.7mm &=1.6mm
Pipe length
1500mm 1600mm 1700 1800mm 1900mm 2000mm 2100mm

Structure
Cu/SS-ALN(H)/SS-ALN(L)/ALN
Absorptive coating property
Sediment method
3 target magnetron sputtering plating

Specific absorption
as=0.90~0.93(AM1.5)

Emission ratio
0.05~0.075(80°C±5°C)
Vacuum tightness
P≤5.0×10-³Pa
Idle sunning property parameters
Y= 260 ~ 300m²°C/KW
Solar irradiation for obtaining
H≤4.7 MJ/ m²(dia.58)
H=3.7~4.2 MJ/ m²
apreset water temperature
H≤3.7 MJ/ m²(dia.47)
H=2.9~3.2 MJ/ m²
Average heat loss coefficient
Ult=0.4~0.6W/( m².°C)