Hybrid Car – More Fun with Less Gas

Way remote power part 2

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Posted by gomango on October 19, 2008, 2:43 pm
Ok guys,

I posted a new one to bring it up in the pages a bit.  Im looking for
some math help at this point.  I did a lot of reading and digging and
still have no answer, so I hope someone out there has a close answer
for me.  I have a 4" smooth pipe, and its 230 feet long.  The head in
this pipe is 16 feet from the inlet to the discharge.  The creek is
still dry, so I cant calculate flow.  Using basic formulas (that I
cant find) is it possible to calculate volume and pressure off of the
unknown?  What I want to know is how much volume and the velocity if
this pipe was running full.  There are three 45 degree bends in the
pipe to snake it arround the creek, but other than that it is straight
and all down hill.

Posted by z on October 19, 2008, 5:52 pm

Here is a win32 application someone wrote that I use.  I assume its


you can plug some numbers in there and get an idea maybe

good luck!

Posted by news on October 19, 2008, 7:19 pm

You now have to register to download, so just use the
http://www.energyalternatives.ca  link and click downloads


Posted by gomango on October 20, 2008, 1:08 pm
 Boy, that takes all the brain work out of it.

Hmmmm, Now this is telling me that I have 276.78 watts available.  I
think this program will also tell me enough to build the banki turbine
as well.  Great link guys. Thanks.

Im a bit discouraged about what I found.  I think that there would
have been a lot more energy from a 4" pipe than that.  I think that a
6" pipe will suck the creek dry, so thats out of the question.  I was
hoping for at lease 1 HP.

Posted by news on October 20, 2008, 2:01 pm
 On Mon, 20 Oct 2008 06:08:32 -0700 (PDT), gomango

Since the creek appears to run continuously during the wet season, you
can multiply 276 by 24 to get 6624 watt hours per day - if you have
sufficient battery storage you should be able to power necessities at
a small cabin (small, high efficiency fridge; a few CFLs (better yet,
LED bulbs), etc.


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