GTC M SERIES GLASS TUBE

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GTC M SERIES GLASS TUBE
Posting date : Mar 05, 2008
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Free Member Scince Feb 18, 2008
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01-
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Detailed Description
Structure All-glass concentric dual tube geometer Glass material Borosilicate glass Outer lube diameter and thickness Ø47±0.7mm &=1.5mm Ø58±0.7mm &= 2.0 mm Ø=70±0.7mm &= 2.0 mm Inner lube diameter and thickness Ø37±0.7mm &=1.5mm Ø47±0.7mm &=1.6mm Tube Length 1200(±5mm) 1500(±5mm) 1700( ±5mm) 2000( ±5mm) Absorbing coating properties Construction Graded Al-N/Al solar selective absorbing coating Method to deposition DC reactive sputtering Absorbance >91% Emittance <8%(80°C) Vacuum P<5X10 -3 Pa Stagnation parameter = 230M 2 °C/KW Solar radiance exposure for obtaining a preset water temperature = 2.8MJ/M 2 Average heat loss coefficient = 0.8W/(M 2 °C) Lifetime 15 Yeas

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