Complaint
1.Vacuum tube feature:
The kind of vacuum tube assimilate the advanced 12 layers of spattering deposition of trivalent element technology, high quality borosilicate glass 3.3, gradual change of CU-SS-ALN/ALN selective absorption coating and make vacuum tubes have high performance of absorptance and low reflection ratio. Through interlayer, vacuum has a unique effect of thermal, with its temperature up to 380 degree of idle sunning, performing a strong ability.
2. Vacuum tube specification:
47-1500MM, 58-1800MM (Standard specification)
47-1800MM, 58-2000MM (optional specification)
3. Vacuum tube Loading quantity in container:
47-1500MM, 4700 PCS/20ft, 9600 PCS/40ft.
58-1800MM, 2860 PCS/20ft, 6600 PCS/40ft
Specification: | ||
Structure | All-glass double-tube co-axial structure | |
Glass material | High borosilicate 3.3 glass | |
External pipe diameter and thickness | dia.=47±0.7mm &=1.6mm dia.=58±0.7mm &=1.6mm | |
dia.=70mm &=2.0mm | ||
Internal pipe diameter and thickness | dia.=37mm &=1.6mm dia.=47mm &=1.6mm | |
dia.=58mm &=1.6mm | ||
Pipe length | 1500mm 1600mm 1700mm 1800mm1900mm 2000mm | |
Absorptive coating property | Structure | AL/AL-ALN(H)/AL-ALN(L)/ALN |
Sediment method | Single target magnetron sputtering plating | |
Specific absorption | as=0.88~0.91(AM1.5) | |
Emission ratio | 0.05~0.075(80°C±5°C) | |
Vacuum tightness | P≤5.0×10-³Pa | |
Idle sunning property parameters | Y= 220 ~ 260m²°C/KW | |
Solar irradiation for obtaining a preset water temperature | H≤4.7 MJ/ m² | H=4.1~4.4 MJ/ m² |
H≤3.7 MJ/ m² | H=3.1~3.4 MJ/ m² | |
Average heat loss coefficient | Ult=0.6~0.7W/( m².°C) | |
