BAOGUANG Solar collector tube,widely used on both compact solar water heater and pressured heating systems.
BAOGUANG Solar collector tube,widely used on both compact solar water heater and pressured heating systems.
Solar vacuum tube features:
1) Use material of borosilicate 3.3 glass.
2) Heat collector tube adopts magnetron sputtering coating technology
3) Sediment gradual change selectivity absorbing coat (Cu/Ss- AL-ALN) has very high absorptivity and very low emissivity for sun ray.
a) Sun absorptance: α≥0.93 (AM1.5)
b) Emission ratio: ε≤0.06 (80+5°C)
c) Temperature of open bask: ts≥220M2°C
d) Pressure of vacuum interlayer: p≤5 x 10-3Pa
e) Radiant exposure of close bask: H≤3.8MJ/sq.m
f) Average heat waste coefficient: UIt≤.90W/ (M2°C)
4) Can resist impact of hail 25mm and is suitable for cold area in winter
Heat pipe:
Item | Technical data |
Heat conduction coefficient | >99% |
Heat conduction speed | >200mm/s |
Axial temperature difference | 1-2/m |
Starting temperature | 20 |
Starting speed | 2min |
Working temperature range | 30~300 |
Life time | More than 10years |
wall thickness | 0.7mm |
