Pumping Downhill is NOT so Easy!

From large force mains stretching for kilometers to small pipe networks in factories, pumping downhill can raise many challenges. Join Stefan Fediw, P.Eng. and Chris Chapman B.Eng. for this NO SALES SPIN technical webinar where practical ways to analyse such undulating systems are explained. July 9, 2020

[@gwc597]

Thank you very much. 43:41 onwards is not explained well in many textbooks (or outright ignored) when describing the method behind system curve calculation. I guess most books assume the pipe is pressurised and in steady state when explaining static head. Great video.

[@MrJGRalston]

Great Video Guys explained things very clearly and simply.
I have just set up some bookmarks for future reference.
17:46 HGL on line with High Point
20:23 Siphon about to be setup
25:00 Pressure below zero as HGL below pipe line
26:06 Pump Booster of HGL
26:33 The Monster Transients from Siphon
29:45 Pumping against Siphon
30:00 HGL example with negative pressure and pipe collapse
32:00 Air Break Valve Operation
34:32 Air Break Valve
41:51 Cannot relie on Siphon being their
43:00 Questions - Transition from pressure to gravity flow
47:53 commonly called "Flow Away"

[@donquique1]

This presentation was seriously great.

[@haroldwestrich3312]

QUESTION: when the tube or Pipe, is large enough to overcome capillary action; would the flow after the first peak simply drain through the bubble by gravity? Therefore allowing at least a minimum flow around the bubble?

[@larsaabergstenvik3740]

Thank you for a very interesting webinar! Would it be possible to direct me to some literature for further reading? Kind regards, Lars

[@harishg5038]

1. Are syphon's are used in network system to increase the pressure? 2. Does these vacuum pressure values can be used in sewer network?

[@JOHNBROOKSCOMPANYLIMITED]

Feel free to contact one of our technical specialists who can assist with your questions 1-877-624-5757