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Science Forum Index » Energy - Hydrogen Forum » river power
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| Mark Chrismer |
 Posted: Wed Apr 23, 2008 5:23 pm |
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Guest
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hey just a thought. why dont we take a barge. made with row after row of
padel wheels conected to generators, chain it down in one location on
the river,and see what kind of power mother nature can give us for free!
or is this just too easy to see, hell you could do the same thing in a
small scale in a small babbling brook.
because it is a paddle wheel it would only float on the surface and
still allow water and fish and what ever to travel through. have another
idea about hydrogen if you think this is good but I want it to be given
to the world not held by enegery companys. my name is mark c who will
join me to save the world. |
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| Eeyore |
| Posted: Wed Apr 23, 2008 6:33 pm |
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Mark Chrismer wrote:
Quote: hey just a thought. why dont we take a barge. made with row after row of
padel wheels conected to generators, chain it down in one location on
the river,and see what kind of power mother nature can give us for free!
or is this just too easy to see, hell you could do the same thing in a
small scale in a small babbling brook.
because it is a paddle wheel it would only float on the surface and
still allow water and fish and what ever to travel through. have another
idea about hydrogen if you think this is good but I want it to be given
to the world not held by enegery companys. my name is mark c who will
join me to save the world.
Ah ! WebTV.
Explains a lot. Good to see they never let you down ! ;~)
Graham |
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| Don Lancaster |
| Posted: Wed Apr 23, 2008 8:58 pm |
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Mark Chrismer wrote:
Quote: hey just a thought. why dont we take a barge. made with row after row of
padel wheels conected to generators, chain it down in one location on
the river,and see what kind of power mother nature can give us for free!
or is this just too easy to see, hell you could do the same thing in a
small scale in a small babbling brook.
because it is a paddle wheel it would only float on the surface and
still allow water and fish and what ever to travel through. have another
idea about hydrogen if you think this is good but I want it to be given
to the world not held by enegery companys. my name is mark c who will
join me to save the world.
Have you ever calculated the slope per mile of a typical river?
--
Many thanks,
Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: don@tinaja.com
Please visit my GURU's LAIR web site at http://www.tinaja.com |
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| nospamplease |
| Posted: Fri Apr 25, 2008 4:29 pm |
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Guest
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Mark Chrismer wrote:
Quote: hey just a thought. why dont we take a barge. made with row after row of
padel wheels conected to generators, chain it down in one location on
the river,and see what kind of power mother nature can give us for free!
or is this just too easy to see, hell you could do the same thing in a
small scale in a small babbling brook.
because it is a paddle wheel it would only float on the surface and
still allow water and fish and what ever to travel through. have another
idea about hydrogen if you think this is good but I want it to be given
to the world not held by enegery companys. my name is mark c who will
join me to save the world.
I think once you do the math, you'll find that the
value of the generated energy will never match the
carrying costs of the barge and generator etc. (ie
infinite payback period). It only works
financially if the water starts off 1000+ft above
the "wheel" (eg: "run of river" hydro-electric).
This is the reason you no longer see industrial
mills using water wheels to run the works.
However, many viable run-of-river projects are
underway in north america. |
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| Mark Chrismer |
| Posted: Sat Apr 26, 2008 8:43 pm |
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Thank you for the input.
I was thinking more of a paddle boat wheel not the type for a mill.
would think you only would need force and volume of water not any
gravity drop, |
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| Eeyore |
| Posted: Sun Apr 27, 2008 11:54 am |
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Mark Chrismer wrote:
Quote: Thank you for the input.
I was thinking more of a paddle boat wheel not the type for a mill.
would think you only would need force and volume of water not any
gravity drop,
Where do you think the force comes from ? Hint, it's gravity. Reduce the
'head' of water and you reduce the pressure / flow / power.
Graham |
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| Don Lancaster |
| Posted: Mon Apr 28, 2008 10:39 am |
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Guest
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Mark Chrismer wrote:
Quote: Thank you for the input.
I was thinking more of a paddle boat wheel not the type for a mill.
would think you only would need force and volume of water not any
gravity drop,
Have you ever measured the slope of a typical river in feet per mile?
30 is extreme whitewater.
--
Many thanks,
Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: don@tinaja.com
Please visit my GURU's LAIR web site at http://www.tinaja.com |
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| nospamplease |
| Posted: Mon Apr 28, 2008 1:07 pm |
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Guest
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Mark Chrismer wrote:
Quote: Thank you for the input.
I was thinking more of a paddle boat wheel not the type for a mill.
would think you only would need force and volume of water not any
gravity drop,
You are correct about force and volume. But force
is related to gravity. Gravity the only reason
water flows in rivers. The metric system is our
friend: one watt for every litre per second per
meter elevation change. Easy to see why a rising
penstock greatly increase energy output. If not,
think of it this way: you get 15psi of pressure
for 34 feet of rise in a penstock (one atmosphere
per 34ft of water). So a penstock with an
elevation change of 1000 ft will have 450psi at
the bottom. Because the elevation change across
your wheel is a fraction of an inch, your water
wheel will see a fraction of one psi of force. So
it will have to be huge to capture any measurable
energy.
The "type for a mill" usually involves a water
drop of 10 feet or so. So it would be hundreds or
thousands of times better than a "paddle wheel
boat" type. Your paddle wheel will produce a few
cents a day in electricity. You'll never be able
to pay for your equipment. So sell that land on
the river and buy a waterfall, and get some pipe
and a turbine.
http://en.wikipedia.org/wiki/Penstock |
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