Re: (ET) Wind power and tractor batteries

[Christopher Zach <cz alembic crystel com>]

Wow, that's a *lot* of stuff to think about. Right off the bat get a 
subscription to home power magazine. I've thought about living off the 
grid, and a combination of wind and solar would probably be best.

The big question is how much power do you need, how quickly do you need 
it, how much power is available, and how long do you need to go without 
power coming in?

That determines the size of your array, the types and number of 
batteries you need, and the depth of the batteries.

One thought off the top is that PV solar and wind make a good combo *if* 
you have enough constant wind. Not everywhere has it. But I'm finding 
that my little 1.8kw array is putting 6+kw per day into the grid on 
Equinox, that's a starting point for calculations (but I have a lot of 
trees). And a 48v bank of T105's with an estimated ah capacity of 150ah 
is about 7,000 watts of power total.

You are probably going to want to start with something like L-16's for a 
house; T105's are probably too small, esp in 48 volt banks.

There are a lot of books and articles. Start with Home Power.

Chris


Matthew callahan wrote:
> Hi All,
>
> Just to pick your brains a little:
>
> I am looking at some land for a home with my wife and daughter.  
> However, one them is pretty far out in the boonies (Fansastic view!!) 
> and connecting to the grid would be cost prohibitive (up to 6-7,000 feet 
> away from the power lines means $40,000+ for hookup).  Living off the 
> grid would mean a wind-power system since this property is on a 
> mountain, with a diesel backup to run on biodiesel.
>
> Meanwhile I am also wondering if it will be both cost effective, and 
> wise, to run that through a battery pack made up of 6V Trojan deep cycle 
> batteries, so when they are due for replacement, I can just transfer 
> them over to my small fleet of ET's for a few more years of life out of 
> them?
>
> I would want a 4k Amphour pack at the very least, or 18 T-105's, to 
> sustain the house power without the generator on anytime overnight if 
> there is no wind to charge the batteries with.  This can then be put 
> into three of my tractors close to the end of the batteries' service 
> life.  However, this is not a multiple of 24 or 48v, so I would probably 
> need to put in (24) 6v batteries, at either 24 or 48 volts with 
> batteires wired in series, and sets wired together in parallel to 
> achieve the system voltage of the wind turbine and inverter.
>
> Any advice on this would be greatly appreciated, especially if there are 
> certain wind turbines recommended for charging DC battery packs.  Any 
> links to suppliers for controllers and inverters would also be fantastic.
>
> Cheers
>
> Matt
>
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