Detailed Product Description

Heat pipe vacuum tube has advanced heat transferring,when the excellent vacuum tube selective absorption coating combination with copper heat pipe, it could be started quickly to turn solar energy into thermal energy even during cloudy days.

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≤.0.4-0.6W/ (M2°C)
4) Can resist impact of hail 25mm and is suitable for cold area in winter