How much does a solar vacuum tube cost?
How much does a solar vacuum tube cost?
- Ten Solar Vacuum Tubes. $149.00. Excellent for solar water heating systems and DIY projects. Boil water using only sunlight! 1 tube can raise 1 liter of water from 60'F (15'C) to 212'F (100'C) in one hour of direct sunlight.
Why choose sunrain solar vacuum tubes?
- The SunRain solar vacuum tubes Northern Lights supplies use a patented 3-Layer process that results in a coating that can absorb more of the sun's energy while being able to withstand temperatures in excess of 300 degrees (575 F) without deteriorating.
What determines the life expectancy of the solar vacuum tube?
- The method and material of this coating will also define the life expectancy of the solar vacuum tube. Most vacuum tubes use a hi-tech reactive sputtering process to coat the inner tube. Most commonly this coating is made from an aluminum and aluminum-nitrogen coating (Al-N/Al) which is the primary absorbing coating.
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