Re: The things people build out of PVC nowadays...
- From: Jasper Janssen <jasper@xxxxxxxxxxxx>
- Date: Sat, 08 Oct 2005 22:15:07 GMT
On Tue, 20 Sep 2005 04:30:50 GMT, Logan Shaw <lshaw-usenet@xxxxxxxxxxxxx>
wrote:
>Well, the more I think about it, the more I think it should actually
>work. Isn't it very similar to a water tower? They are basically a
>giant bowl (not unlike a satellite dish) with a long relatively
>thin pipe coming out of the bottom. And the higher the water tower
>is, the more pressure you get at the tap.
>
>I freely admit there could be some significant difference between my
>satellite drain idea and how a water tower works, but if there is a
>difference, I don't know what it is.
The difference is what you want to do. A water tower has, inherently,
atmospheric pressure at the top and wants high pressure at the bottom, at
a relatively low flow rate. What you want for a drain hole is highest
possible flow rate. If you get enough water to actually fill the dish and
the pipe without a constriction at the end, then the bottom will be
spouting at that higher pressure but it'll have a relatively low flow
rate. Because if it had a high flow rate, the pipe wouldn't be backing up.
Jasper
.
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