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All glass tubes with water in tube are very cheap, why use anything else?

April 26, 2017Cheap glass tube tubes water

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All glass tubes with water in tube are very cheap, why use anything else?

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No pressure is possible. Break one tube, the water all drains out. Any calcium or other minerals in the water will eventually coat the inside of the tubes. Efficiency is lower than heat pipes, since liquid moves slower than vapour and condensation transfers more heat than conduction.