Free State Project Forum

New Hampshire -- The "Live Free or Die" State => Moving & Housing => Topic started by: TJames on June 21, 2012, 10:33:43 pm

Title: personal hydropower?
Post by: TJames on June 21, 2012, 10:33:43 pm
I hope this is the right forum.

What would I be up against if I were to build my own personal hydropower system in New Hampshire?
Title: Re: personal hydropower?
Post by: MaineShark on June 22, 2012, 06:04:03 am
Substantial technical challenges, if you had a property with a good-running stream and a major drop on it.

State and Federal regulations if you were talking about building a dam.
Title: Re: personal hydropower?
Post by: rank420 on June 22, 2012, 11:13:26 am
What's funny is I just found this exact thing you are wanting.

We think alike it seems, I see a real good friend in my future.

http://www.wired.com/wiredscience/2010/03/backpack-hydroelectric-plant/

This inventor has a ton of cool "ocean power" generation ideas as well on his main site.
Title: Re: personal hydropower?
Post by: MaineShark on June 22, 2012, 02:47:45 pm
http://www.wired.com/wiredscience/2010/03/backpack-hydroelectric-plant/

The article states that it requires a stream four feet deep, moving at 7.5fps.  That's not something you're likely to have on your property.
Title: Re: personal hydropower?
Post by: TJames on June 22, 2012, 03:18:21 pm
That is something I'd be looking for. If I could I'd collect land.
Title: Re: personal hydropower?
Post by: TJames on June 22, 2012, 03:42:44 pm
Also...

I have been wondering if it is doable to get power from the magnetic field, or any magnetic field. I don't think it would power the house but it might help. Any thoughts?

It looks like southern New Hampshire has a bit of geothermal activity. Is it practical to tap it?

A network of solar, wind, and maybe hydro and some blades on a woodstove should do it, but I wonder if I could tap into something more consistent.
Title: Re: personal hydropower?
Post by: rank420 on June 22, 2012, 04:32:27 pm
trial, error and testing.

all you need is land and neighbors who stay out of your business.

Title: Re: personal hydropower?
Post by: MaineShark on June 22, 2012, 05:28:34 pm
I have been wondering if it is doable to get power from the magnetic field, or any magnetic field. I don't think it would power the house but it might help. Any thoughts?

You need a moving magnetic field to induce a current in a wire.  The earth's magnetic field is akin to a magnet sitting next to a wire - nothing happens.  You need to move either the magnet or the wire, so the field cuts through the wire in order to generate power.  You can't generate meaningful power even if you start waving a wire around outside, because the flux density of the earth's field is minuscule.  It's enough to make a tiny, balanced compass needle move, but the magnets in a generator are many, many thousands of times stronger.

It looks like southern New Hampshire has a bit of geothermal activity. Is it practical to tap it?

Not without drilling a very deep well.

A network of solar, wind, and maybe hydro and some blades on a woodstove should do it, but I wonder if I could tap into something more consistent.

Wood is more practical.  Wood-fired generators are not inexpensive, but they are not ridiculous, either.  And wood is so common that it literally grows on trees :D - so the cost per kWh is pretty darn small.
Title: Re: personal hydropower?
Post by: TJames on June 22, 2012, 05:57:56 pm
"You need a moving magnetic field to induce a current in a wire.  The earth's magnetic field is akin to a magnet sitting next to a wire - nothing happens.  You need to move either the magnet or the wire, so the field cuts through the wire in order to generate power.  You can't generate meaningful power even if you start waving a wire around outside, because the flux density of the earth's field is minuscule.  It's enough to make a tiny, balanced compass needle move, but the magnets in a generator are many, many thousands of times stronger."

I'd eventually like to experiment with Telluric generators, but I should read up on them to make sure that isn't a dead end.