ท่อดูดฝุ่น -5

Three-cavity vacuum tube solar collector
Technology upgrades, better performance
Dual combination of a dual absorption coating (aluminum target, argon, nitrogen), coupled with the collector tube hollow tube, two-way heating, increase the thermal efficiency, the second generation SS-AL-N/Cu unique film, surrendered an average reached more than 0.96.

Technology upgrade, the performance of further
Combination of dual absorption coating technology, high deposition rate of materials and advanced design techniques, so that overall performance improved significantly: More high temperature (up to 500 ), more efficient (heat absorption ratio of 0.96), lower heat loss (as low as 0.04).

Design optimization of film
Optimize the film structure can absorb multi-band solar radiation, to improve integrated heat collector tube; Carefully designed to change the traditional infrared reflection layer physical structure, effectively reduce the radiant heat tube Sun; Film stronger adhesion, higher density, effective increased attenuation of the ability of anti-vacuum tube.

Structure
All-glass double-tube co-axial structure
Glass material
High borosilicate 3.3 glass
External pip diameter and thickness
Φ =47± 1.0mm§ =1.6mm± 0.2mm
Φ =58± 1.0mm§ =1.8mm± 0.2mm
Φ =70± 1.5mm§ =2.2mm± 0.3mm

Internal pip diameter and thickness
Φ =37± 0.8mm§ =1.4mm± 0.2mm
Φ =47± 1.0mm§ =1.6mm± 0.2mm
Φ =58± 1.0mm§ =1.8mm± 0.2mm

Pipe length
950mm 1500mm 1600mm 1700mm 1800mm 1900mm 2000mm 2100mm
Absorptive coating property
Structure
Cu/SS-ALN(H)/SS-ALN(L)/ALN
Sediment method
3 target magnetron sputtering plating
Specific absorption
As =0.93~0.96 (AM1.5)

Emission ratio
H =0.04~0.06 (80± 5)
Vacuum tightness
P≤ 5.0× 10-3Pa
Idle sunning property parameters
Y=260~300 m2. C/KW
Solar irradiation for obtaining a preset water temperature
H≤ 4.7MJ/m2(Φ 58)
H=3.7~4.2 MJ/m2
H≤ 3.7MJ/m2(Φ 47)
H=2.9~3.2 MJ/m2
Average heat loss coefficient
ULT=0.4~0.6W/(m2. )