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Free Fuel, Forever |
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Freefuelforever.com |
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Double walled evacuated tubes, suitable for use with heat pipe or passive systems. A vacuum separates the absorber surface from the outside environment, eliminating conductive or convective heat transfer. |
Solar Water Heater Tubes |
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· 99 % heat conduction · Lifetime greater than 10 years · Vacuum ensures no heat loss · Withstands hailstones |
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Price: $9 how to pay |
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These high efficiency glass tubes may be used with 1.5 meter heat pipes and fin inserts as well as passive solar water heaters that circulate water directly in the evacuated tubes. Solar energy is trapped on the black absorber surface, which is deposited on the inner glass using thin-film technology.
A vacuum between the inner and outer glass tubes prevents heat energy from being conducted away to the outside environment, which means that outside air temperature is almost irrelevant to the degree to which the inside the tubes can be heated.
1.8 meter tubes of the same also available. |
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SKU/Item Number: SLU1500 |
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Factory Brochure, Solar Heater Tube Specifications |
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E-mail: info@freefuelforever.com
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