water wheel power

[diesel]

Hi all. I am exploring the idea of building a 6kw water wheel gererator on our farm. I am looking for a 6kw permanent magnet generator that uses a low rpm. I have searched the net but can't find anything suitable. If anyone could recommend a company that supplies these motors, or with any suggestions in building a water wheel, I would really appreciate it.

Best reagrds

[Bizzy]

Hi all. I am exploring the idea of building a 6kw water wheel gererator on our farm. I am looking for a 6kw permanent magnet generator that uses a low rpm. I have searched the net but can't find anything suitable. If anyone could recommend a company that supplies these motors, or with any suggestions in building a water wheel, I would really appreciate it.

Best reagrds

Hi diesel

I never worked with a water wheel only windmills and alternators but the principle is the same. in the end you are turning a rotor of magnets over a set of coils. Only instead of wind you are using water as a method of moving the rotor...
if you google "hugh piggot windmills" you will find some great sources on homemade windmill alternators. He had a s site and I was going to provide a link but it seems to be down.
However there are still alot of diagrams out there.In addition if you can find his book I highly recommend it! The book is well worth the moeny if you are serious about building a windmill or alternator.
In my experience in building homemade alternators I am certain you could adapt it to you application. Feel free to post any more questions you have on the subject.
Good luck
Bizzy

[nueview]

Wind Turbine PMG PMA,PM Generator Alternator,Grid Tie Connected Inverter,Ginlong Technologies,PV Solar

these are the best generators i could find for my windmill project they are low rpm and little to no cogging and have good power levels at low rpm.
we are getting 300watts at 10 mph and almost full power at 22 mph. with 1500 watt generator.

as for water wheels there are different ways to go but there was a vortex spin generator made in england that i would look into i do not have a link for it but it is low head pressure.
if there is enough flow flume wheels work well also as the diameter and width can give large low rpm high torque.
Martin

[diesel]

Thanks for your replies. I was thinking again about it and I am going to build a dam and water wheel first and do my calulations then to what generator I can power.

[nueview]

if you do a flume wheel you might want to check with your local power company as they have some great metal spools for underground shielding and they make great water wheels for a flume setup.
just adjust the width and add paddle boards and add an axle and you are ready to go.
martin

[diesel]

You don't have to build a dam and a waterwheel. You can pipe water from the source to another location and set up a turbine then return the water to its source. It will save you many hours of work and will let you build a turbine at any location. A turbine is easier to build from commonly avaailble materials. You can use any modern aluminum truck wheel and make sections from aluminum plates. Surround this with an aluminum cover and you are ready. You can mount a wheel on any kind of shaft and bearing system. Also, using a turbine this way, you can put a shutoff in the pipe that feeds the turbine to do maintenance on it. And, you won't have to stand in the creek to work on it. If you need any more information, just let me know. Good Luck. stealth

Hi Stealth, thank you for your reply. I would really appreciate it if you could send me more information anything to make like easier.

[willy96]

hello

i have invented to my knowalage one of the best water turbines built ..
dont get me wrong IM NOT BOASTING ....

i just have played with many toys ..

use my turbine and hpg's

i have a compleate design this was designed when i did it to produce 10 000 amps at 12vdc .. to drive invertors ..

here is my turbine

Filsinger Turbine - YouTube

william

[jibbguy]

I like micro hydro very much, for those who have moving water on their property. Its great to see new inventions like the above turbine.

For those without the mechanical ability, maybe its time to check this one out again: A village in Thailand who used a standard induction motor and shallow well pump "run backwards" as a turbine and generator to make up to 3 kW of usable power (with a three inch pipe and 10 feet/ 3.2 M of fall).

http://www.palangthai.org/docs/HKTmi...dro19Feb06.pdf

[nueview]

this is a discussion that could go on with no good end in view.
if you have a stream that can give you 10,000 psi pressure build the water turbine.
or if your creak has 50 meters of head water height and 1.5 liter per second of flow go for it but if it is the standard creak stick with the flume wheel.
there is a reason Louis the 14th has been claimed a great engineer for pumping 1 million gallons of water a day into paris from the seign river.

without this engineering feet large cities would never have industrialized.
nor the east coast of the US.

if you raise the water flow by restricting it by 4 inches you increase3 its velocity several times and velocity and weight equals power.
a ginlong generator will give 1.5kw power out at 600 rpm a four foot radius flume wheel will have quit a bit of torque. depending on creak size and flow rate.

if you have some head height look at a vortex pond for power generation these produce the best power output for the size and volume of water.
remember power is developed by mass velocity.
Martin

[willy96]

use a ram pump in the river large volume to a small diamiter nozzel .. and watch my turbine spinn...

W

do some math 30 lbs at as showen 25 000 rpm .. how many hp ?

1800 watt pressure washer .. generators have 0 back torque i worked on this design 4 years ..

just thought i would show yas l8r

[Roland]

I like micro hydro very much, for those who have moving water on their property. Its great to see new inventions like the above turbine.

For those without the mechanical ability, maybe its time to check this one out again: A village in Thailand who used a standard induction motor and shallow well pump "run backwards" as a turbine and generator to make up to 3 kW of usable power (with a three inch pipe and 10 feet/ 3.2 M of fall).

http://www.palangthai.org/docs/HKTmi...dro19Feb06.pdf

I may be not understanding this correctly.
Are you saying he only needs 10 feet of head pressure? The link says they had over 50 meters of head pressure. 27" = 1 psi so i don't see how a pump would run backwards at enough speed unless the pressure was as high or higher than the rated PSI (that pump looked to be about a 30-50 psi pump). it would have to have at least 70 feet of head water pressure (fall).

[soundiceuk]

Here is a company using neo magnets in there permanant magnet generators.

ALXION Automatique&Productique

[jibbguy]

Roland now that you mention it, it doesn't actually say what the fall is, only mentions distance runs.

"The final choice did require considerable civil works: a 5-meter deep trench through about 30 meters of hillside, and an extended pipe elevation section for 50 meters that also crossed over the stream"

I remember another installation with that kind of fall from a YouTube, in West Virginia... that's probably where i got the 10 feet. Total flow would be equally important.. since it is possible to increase pressure by funneling down the pipe diameter.

[Roland]

..since it is possible to increase pressure by funneling down the pipe diameter.

This part is not correct. Pressure can not increase (above the the head pressure) by changing pipe diameters. The depth dictates the maximum pressure period. The pressure can only decrease from the max pressure. It does so when the water is moving thought pipes, etc.

So if the pump needs 30 psi to spin the correct rpm, the head pressure HAS to be a minimum of 70 feet.
(like you say the flow rate has to be adequate also, but if the flow was not adequate, the pressure would not be 30 psi ether)

I'll add that velocity on the other hand, does increase when pipe size is decreased, and when velocity increases, pressure has to decrease...

[willy96]

take a jet sky throw it in the river and pump some water ... ram it out a nozzel .... run the damm thing on hho ... lol


or

i have designed floating dock water wheels that are capable of turning a car alt!


they use the current of the river .. and there can be magnets on the wheel and a coil or 2 to power the alt....

so many ways ... i quit playing with it ...

W