Re: Potable water Piping

From: <Christopher>
Date: Tue Aug 30 2005 - 00:03:00 EDT

> If a present system is warking on 40 psi and
> fulfilling the requirement of 45 ton/day and if the requirement goes
> to 70 ton per day than what is the critaria of hydraulics of potable
> water netwark?

In general the pressure drop across a network goes as the square of the flow rate. If you jack up the flow rate by a factor of 70/45 = 1.6 the upstream pressure needed to get all that water through will increase by a factor of 2.6 if you make no mods to the system. The flow velocity (which affects associated response, like water hammer) goes up by the 1.6 factor. You can start checking the system part by part to see what changes you need to make to withstand the new pressure and handle the new velocity.
Christopher Wright P.E. |"They couldn't hit an elephant at <a href="/group/PipingDesign/post?postID=9wwOw6XJhH1GM_QJjbgxaeFMozVxJcqMusHna2YTakQCwCdL14McUSkrIH7U13hE41JBCL97RmvwXKfzaw">chrisw@skypoint.com</a> | this distance" (last words of Gen.

.......................................| John Sedgwick, Spotsylvania

1864)
<a href="http://www.skypoint.com/~chrisw/">http://www.skypoint.com/~chrisw/</a> Received on Tue Aug 30 00:03:00 2005