High temperature vacuum tube collector
(Direct Current Heat Pip tube)
The tube has
1, vacuum and direct current,
2, selective coating
3, heat pipe in it,
the tube working temperature 200-550C
It just work for solar thermal power plants, Parabolic trough system, solar air-condition.
The dia. Has 100mm, 120mm, inner dia 70-100mm, and the length has 1500mm, 1800mm, 2000mm，4000mm