20 Vacuum Tube Unpressurized Collector
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Super-high efficient heat collection through selective metal absorber coating having above 85% higher heat absorbing and sun energy transition rate
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Temperature resistance 28-626 F
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Holds temperature longer specially in low temperature environment
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Maximum radiation absorption and minimum thermal radiation losses
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SUS304-2B stainless inner manifold holding vacuum tubes, 0.02" thickness
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Manifold case material Galvanized Steel
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Insulation material Polyurethane 1.82+/-0.05 lbs/cubic foot
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Mounting frame material Galvanized steel with weather-proof coating 0.06" thickness
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Cost effective to compose of large solar energy collecting array
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Comprehensive limited warranty 12 years with expected life time > 20 years
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Water in the tubes and may result in water scaling and system maintenance works
- Work in an unpressurized system configuration
- Net/dry weight 106 pound
- Absorbent area 27 square foot
- Dimension 78 x 69 x 8