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All glass evacuated tubes are key components of solar water heater. It consists of two high borosilicate glass tubes which come with high chemical and thermal shock resistance. Outer side surface of inner tube is coated with a sputtered solar selective surface with material of Al-N-Al. Inner tube and outer tube are sealed together. Jacket between outer tube and inner tube is evacuated to virtually eliminated heat loss by conduction and convention. High vacuum is maintained by Barium gas getter which absorbs any residual gals.

 

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Taian Dazheng Hengyuan Solar Technology Co., Ltd.
Furong Road, Nanguan, Shandong, China P.C: 271000
Ph: +86 538 8219910
Fax: +86 538 8219972
E-mail: info@solarisland.net