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Excellent for winter heating systems and summer projects. Boil water using only sunlight! Use this tube for your own science or hobby projects, or for building your own powerful solar-powered home heating systems.
Finally you have a reliable U.S. source for high-grade solar vacuum tubes. Unlike many solar vacuum tube suppliers we offer a standard 100% shipping protection guarantee. Make sure other vacuum tube suppliers you are considering offer this type of no-questions guarantee for these fragile tubes. We offer excellent customer service for any assistance you many need, and stand firmly behind the quality of all our products.
These tubes soak up the energy in sunlight, absorbing it into the super-insulated inner tube of their incredible double-wall heating system. Once inside, the heat of the sunlight is trapped inside the inner wall of the inner glass tube. Highly-reflective layers of steel, aluminum, and copper trap the infra-red energy of the sunlight, and the nearly perfect vacuum between the inner wall and the outer transparent wall protect the inner tube from heat loss due to convection, just like a high-grade drink thermos. This thermos effect can quickly heat water to boiling temperatures in direct sunlight, and keep the water well over 100 degrees even over night!
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In stock and shipping immediately. We look forward to getting you up and running with solar heat today!
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