I need to pump 40 cfs or 17953 gpm of water from a stream to a reservoir and I am not sure how to size the pipe, the only manual I have is a rainbird irrigation catalog and it does not come anywhere near covering the volume that I need, could someone please link me to a site or give me an equation. The only thing I could come up with online had to do with steam calcs
thank you
2007-11-07 12:50:33 · 5 answers · asked by ninja cat 4 in Science & Mathematics ➔ Engineering
about 12,000 feet and it has to go up hill about 8 feet, I would like to know the minimum pipe size needed for this, if at all possible, assuming sch 40 pipe
2007-11-07 13:15:19 · update #1
A 42" ID pipe would do the job.
The pressure drop would be about 0.194 feet per 100 feet of pipe at 18,000 gpm.
The pressure drop for 12,000 feet of pipe would be 24 psi+ the rise of 8 feet = 27.5 psi pump outlet pressure required.
The pump horsepower would be 18,000gpm*64feet of head/3960*.85eff. = 342 horsepower = 255 KW.
If you were real lucky it would only cost you $25 per hour to operate this pump.
That is one humongous pump.
2007-11-07 15:55:23 · answer #1 · answered by gatorbait 7 · 0⤊ 1⤋
There are a few variables that you don't give- height difference between the source and the reservoir, how long the pipe is, how it's configured, how you're pumping it, duty cycle, etc.
Consider playing around with this online site to help you find a reasonable size pipe.
http://www.engineeringtoolbox.com/darcy-weisbach-equation-d_646.html
It's a balance between the cost of the pipe and amount of power you can lose in transit. So a large pipe need less pump but the pipe cost is high. A small pipe needs more powerful pump and uses more energy to run.
2007-11-07 13:05:55 · answer #2 · answered by Mr Soul 4 · 2⤊ 1⤋
This sounds like a great civil engineering question from my water resources class. I'd love to design it for you but I cost money. But I can point you in the right direction! Go to any local library and look up a water resources. Or if you wish, you can easily find a used book about it with problems exactly like the one you've described!
Good luck!
2007-11-07 15:15:31 · answer #3 · answered by David T 3 · 0⤊ 1⤋
public works in New Orleans. could tell ya
2007-11-07 12:59:37 · answer #4 · answered by Bob d 5 · 0⤊ 0⤋
hard problem. check out over bing and yahoo. that can assist!
2015-03-17 16:52:37 · answer #5 · answered by matthew 2 · 0⤊ 0⤋