[RE-wrenches] Well siphon?

[Darryl Thayer]

Yes, but if the rise is greater than about 30 feet (25 feet even) the water
head is greater than atmospheric and the water will draw a vacuum in the
pipe.  These numbers depend upon the location (elevation) and temperature
of the water.
for example at 15,000 feet the atmosphere is about 1/2 or sea level,
meaning the water column will break at 15 feet of head.  (from my high
school physics, this is the scale height) so that at 7500 feet the water
column is a maximum of 3/4 x 30 feet or 22 feet.  this is from memory and
mine is not so good.

On Thu, Jan 27, 2022 at 3:51 PM William Miller <william at millersolar.com>
wrote:

> Colleagues:
>
>
>
> All of our water pumping customers to date have been pumping water to
> tanks higher in elevation than the well-head.  Just now I am looking at a
> system pumping to a pond that is lower than the well-head and lower even
> than the bottom of the well.  The 300’ well has the head at 1200’ elevation
> and pumping to a pond at 800’ elevation.  The line goes over a 1500’
> ridge.  If there were nothing impeding the water flow, would it not siphon
> to the pond?
>
>
>
> Has anyone seen the basic physics available being used to advantage?
>
>
>
> Thanks in advance.
>
>
>
> William
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
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