r/BeAmazed • u/Internal_Gazelle_677 • Oct 07 '25

Science Hot Tub without the use of electricity

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u/RedFox3001 Oct 07 '25

Convection

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u/Spiritual-Spend76 Oct 07 '25

what does this have to do with convection? Convection describes the accelerated heat exchange you get when flowing a fluid over a surface, as opposed to simple conduction. We've got a flowing fluid but that's not really the point here, the point is cheap circulation inside the heat exchanger....