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uplift tubes and maximum height

GrahamC
in Technical

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Any hydraulic engineering types here? Just wondering what the formula might be to calculate the maximum height of an uplift tube. I read that the pressure exerted volume of water in the tube should not be greater than the pressure at the tube's entrance, so a deep tank is capable of providing more lift than a shallow one.

This is in relation to the windowfarm which uses uplift tubes to bring water up from a small container to the top of a window powered only by aquarium air pumps ...

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    its my understanding that higer lifts can be achieved by using smaller tubing (less weight of water to be lifted), have seen a header tank in a single story house filled by a constantly running AP-950 air pump (didn't get to see the workings of it but was assured that thats what he was doing)

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