Geyser tube

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All glass solar vacuum tubes (solar evacuated tube collector and ETC) is the key component of solar water heater, which has great significance to the efficiency and lifespan of solar water heaters Consists of two different sizes glass tubes made of extremely strong 3.3 high borosilicate glass with high chemical and thermal shock-resistance Outer tube is transparent allowing light rays to pass through with minimal reflection Exterior of the inner tube is coated with a sputtered selective coating (AL/N-AL or AL/CU-SS) which features excellent solar radiation absorption and minimal reflection properties Outer tube and the inner tube are melted together, the part between the two tubes is evacuated to make it vacuum insulation


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