Can you consider the nozzle as the restrictor for the "2 inch pipe worth of water"? Run a 4 or 6" pipe and use the restriction of the nozzles, possably up to 4 of them to get a good output and stay under the flow level of a 2" pipe?
If you can talk the ditch owner into it, it should get you a better output and stay within the restriction.
 
Just a thought,
Bob Ellison
-----Original Message-----
From: Ron Macleod [mailto:microhydro@dplus.net]
Sent: Friday, September 08, 2000 1:31 PM
To: RE-wrenches@topica.com
Subject: Re: help with hydro site calcs [RE-wrenches]

Hi Todd - one excellent source of basic info and formulas to evaluate a micro site can be found at Joe Cole's web site - he has worked hard at research and his info is good.

http://www.geocities.com/flying_hissy/Micro-Hydroelectric_Power_Plants_Menu.html

Best Ron

Todd Cory, Bald Mt. Solar wrote:

Hi List,

I am needing some information on sizing a hydro installation. Generally one
knows the available flow in GPM, but this situation is a bit different. The
customer has water rights off a ditch to "take up to a 2" pipe's worth of
water". Running 675' of 2" PVC, he will have 60' of head.

I need to know what kind of maximum flow will run through a 2" pipe. I can't
seem to find any charts listing this. Once I know that, I can figure friction
loss and estimate the net pressure available at the generator site.

Also is there an easy to figure estimated output in watts knowing net head and
flow? I need to size the Harris and delivery wire.

Thanks in advance.

Todd

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