Powerful-6 Solar Vacuum Tube

Solar vacuum tubes
1.Tubing transmission less than 0.89
2. flexibility less than 0.12%
3.The sun absorption more than 96%
Solar vacuum tubes:
Selection of advantages:
1. Glass selection of composite ISO3585: 1991 requirements borosilicate 3.3 glass, the glass has: strong acid, solar projection ratio, impact resistance and other advantages.
2. collector process by magnetron sputtering
3. deposition gradient selective absorbing coating (A1-N/A1), the coating on the Sun has a very high absorption rate and low emissivity, solar absorption ratio ≥ 0.92 (AM1.5), hemisphere than launch? h ≤ 0.086 (80 °C ± 5 °C), air drying temperature of ts ≥ 220 m
2
°C, gas pressure within the vacuum laminated P ≤ 5 × 10-3pa, nausea amount of sun radiation exposure H ≤ 3.8MJ / m, the average heat loss coefficient ult < 0.09w / (m °C).
4.25mm can withstand the impact of hail, even in cold winter areas can also be used.

Tri-targets vacuum magnetron sputtering
Tube structure
dual tubes, coaxial
Tube material
Borosilicate glass 3.3
Outer tube Dia. and thickness
dia.58mm;thickness1.6mm
Inner tube Dia. and thickness
dia.47mm;thickness1.6mm
Tube length
1500-2100mm


Selective absorbing coating
CU/SS-ALN/ALN
Sediment method
Magnetron sputtering
Vacuum degree
5*10
-3
Outer tube transmittance
≥91%
Absorption rate
≥96%
Emittance rate
≤6%
heat loss efficient
≤0.6w/°C
Stagnation tempreture
260~300°C
thermal expansion coefficient
3.3*10
-6
Pressure endurance
1mpa
Impact endurance( dia.)
≤25mm hailstone
Service life
15year

Welcome old and new customers to negotiate!