Thread: Potable Water - The Third Way.
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Mark Borgerson Mark Borgerson is offline
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Default Potable Water - The Third Way.
In article ,
says...
Brian Whatcott wrote:
On Mon, 08 Oct 2007 10:13:17 -0700, Keith Hughes
wrote:

...I proposed filling the tubes
completely with water so that the initial head space would be zero.

No, it won't be zero. It can't be. If it is, then you have a solid
liquid stream, and it's just a siphon.
...
A solid liquid loop will not separate into two separate columns.
...
Keith Hughes

Perhaps it would be better for you to check what is the maximal rise
(head) of a syphon. Can you guess what it might be?

Uhmmm, maybe you should follow the thread. If you *pump* the water up
the columns, evacuating the headspace as you go, until the columns meet,
you can siphon pretty much any height you want. Until outgassing
creates a headspace. If the bases of the columns are at differing
heights, you have a siphon until that happens.

If you pump both the fresh and salt water to the top of the U-Tube,
then switch from the pumps to the reservoirs at the bottom,
you won't get a siphon. The boiling of water at the top will
break the siphon action.

Mark Borgerson
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