liyang-2 Zijin three high vacuum tube

liyang solar vacuum
1,Made from Pyrex glass 3.3
2,Performance in line with ISO3585: 1991 requirements
3,High thermal effic
liyang-2 zijin three high solar vacuum tube:

Process characteristics:
1. use of advanced production technology, professional production of various types of rough tube, vacuum glass tube
2. selective absorbing coating
3. high vacuum, high-performance collector
4. Low thermal loss coefficient
5. shock resistance, low temperature

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.


material
borosilicate glass 3.3
length
1800mm
inner tube diameter
37mm
outer tube diameter
47mm
membrane
gradient AL-N-C/AL selective absorbing coating
solar absorptance
> 0.09 (AM = 1.5)(international requirements as:>0.86)
hemisphere emission ratio
> 0.086 (80 °C) (international provisions: ≤ 0.09)
air drying performance parameters
≥186square meters.°C/kw(international requirements as:≥175)
The amount of sun radiation exposure stuffy
≤ 2.86MJ / m
2
(international provisions: ≤ 3.8)
Average heat loss coefficient
≤ 0.75W / m (International provisions: ≤ 0.90)
inside and outside the tube laminated tube
≤ 5 × 10-3pa (international provisions: ≤ 5 × 10-2pa)
heat shock
Below 25°C 90°C repeated alternating hot and cold water more than three times without damaging the impact of
pressure
withstand the pressure of 0.6Mpa
anti-hail
size of not more than 25mm can withstand without damage hail attack