High temperature vacuum tube collector

FOR IMMEDIATE RELEASE
(Free-Press-Release.com) August 22, 2009 -- The tube has
1, vacuum and direct current,
2,selective coating
3,heat pipe in it,
the tube working temperature 200-550℃
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

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