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RTWirtz pumps are really clever
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This spiral pump uses air lock to push water to great hights.
Here's Johnathan Deane's paper on the subject: https://openresearch.surrey.ac.....uk/esploro/outputs/
Here's my water solving mazes video: https://youtu.be/81ebWToAnvA
Additional filming by Geronimo James
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Very cool!
For the first time in at least 10 minutes, I learned something new....
I was totally wrong / had forgotten something, as to HOW they can pump way above the end point of the pump... Which I thought was their limit to their pumping height...
It's the cumulative pressure per stage or revolution - added up = the maxium head height, that the pump can pump up too.
Say that one of these spiral type pumps, was hooked up to a big paddle wheel - on pontoons in a running river..... turning at say 3 RPM...
It's not a spiral of say 3 meters, with the centre at 1.5 meters above the river height, that is the limit - I saw the maths and computations - they flickered into existence and faded out again.
So lets say the outer end of the spiral is 1.5 meters from the center, then the next spiral is 20 cm closer in (130cm in radius) and then 20cm closer in (110 cm in radius) etc. to say 90cm radius, then 70cm in radius and then 50cm in radius....
So the pressure of last dose of water going into the spiral, ADDS to the pressure, of the other doses in the spiral - and not being to to date on the water density / pressure / head height tables...
Graphically, it's 1.5 meters of head + 1.3 meters of head + 1.1 meters of head + 0.9 meters of head + 0.7 meters of head + 0.5 meters of head = 6 meters of head....
OR something like that, or close too it.
There is all sort of maths and physics behind these and the more turns in the spiral and the greater the diameter, and the better the seals are, the higher the pressure these can pump at.
I have seen them either on a video or in real life, in the Murray River, with one big spiral powered by a direct drive paddle wheel, on two rather long pontoons... which was tethered to a tree in a river bend... (the river rises and falls and floods - quite a lot... as in the floods can be huge... so you can't anchor it to the bottom of the river, because of the trees and shit coming down the river in the flood.)
https://en.wikipedia.org/wiki/Water_pumping
https://lurkertech.com/water/p....ump/tailer/coverpump