vaccum tube heat pipe solar collector

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vaccum tube heat pipe solar collector
Posting date : Aug 18, 2009
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70-
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1. Manifold (interior) material: Red copper 2. Manifold (exterior)material: Aluminum alloy 3. Tube dimensions: 58*1800mm/47*1500mm 4. Vacuum tube coating material: AL-N-AL or ALN-SS-Cu 5. Insulation layer: Polyuttethane foaming or rock wool 6. Test pressure: 6 bar 7. Heat preservation: 72hrs 8. Hail resistance: 25mm

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