Detailed Product Description

BAOGUANG heat collector vacuum tube technical data:

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