Quote:
Originally Posted by pieter
To take this even more seriously:
It is not (just) the lack of human suction that makes it impossible to pump (suck) up water more than 10m. It is a theoretical maximum, because the pressure above the water becomes so low that it starts to evaporise/boil (vapour presure) and the water column "breaks". No matter how good your pump you can't get more than 10m.
You would need to lower the pump into the water and make it "push up" the water to get it up from more than 10m.
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I thought that's what I said, sort of...
The vapor pressure of water is 0.18 bar at 37 C. approximately (blood boils at 45,000'), but it's much lower near freezing. Plus there's no such thing as a "negative vacuum pressure", you rely on the surrounding atmospheric pressure to push the column up. Unless you have a supercollider particle accelerator to create a "mini Big Bang", to "break the vacuum".
Charlie
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Unimog U500 w/Unicat
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