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Tianshi Tech |
Description


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Strucure
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All-glass concetric dual tube geometr
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Glass material
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Borosilicate glass
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Outer lube biameter and length
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D =47 +/-0.7mm, L =1.5m
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D =58 +/-0.7mm, L =1.8m
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D =70 +/-0.7mm, L =2m
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D =37 +/-0.7mm, L =1.5m
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Lnner lube diameter and length
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D =47 +/-0.7mm, L =1.8m
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D =58 +/-0.7mm, L =2m
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Gtaded Al-N/Al solar selectuve absorbing coating
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Construction
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Absorbing
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Mothod to deposition
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DC reactive sputtering
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Coating
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Absorptance
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96%
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Properties
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Emittance
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< 8% (80 Celsius degree )
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Vacuum
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P < 5×10 -3pa
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Stagnation parameter
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>= 230m*m Celsius degree/KW
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Solar radiance exposure for obtaining a preset water temperature
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=< 2.8MJ/m*m
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Average heat loss coefficient
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=< 0.8W/(m*m*m Celsius degree )
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Lifetime
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15 years
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