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wind power vs. my needs

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Posted by Agryppa on July 21, 2006, 9:20 am
 


Hi,
I've searched for wind turbines on the net and I have found numerous
resources on the topic. The plethora of information overwhelmes me. but I
do not give up.
I'd like to take some of the wind power and use it in my home. Some people
say go off-grid others say grid-tie your system. There are probably many
factors to take into account before a decision can be made.

What ratings other than wattage characterizes off-grid inverters? What
features should I be aware of if I happen to buy one of them?

How many batteries does one need if the peak power consumption at home is
8000 Watt? For how long can I drain the batteries before thay get empty?

thank you for any hints on  the subject.
Perhaps a link to an appropriate site on the subject is better than
answering directly, then please do not hesitate to give it to me.

Agryppa


Posted by Eric Sears on July 21, 2006, 9:52 am
 





This is the first crucial decision you will need to make.
And it makes a great deal of difference.
With grid-tie you basically size your interactive inverter to the
greatest amount you expect your generator (wind turbine) will produce.
Depending where you live, the more difficult part might be getting the
required consents to grid-tie.

Off-grid systems require you to consider the other questions you
asked.


Too true!


Voltage of system. Surge ratings. Stand-by current and modes.
There are others.
 


You shouldn't "happen to buy one" unless you know exactly what you
need. This means determining your system first


These two questions reveal that you need to find out a great deal
more.
Try Steve Spence's site, or otherwise any of the renewable energy
dealers that offer explantions of how renewable energy systems work.
You need to understand more than just peak energy use.
You could probably draw an 8kw load from a 20kwh battery - but only
for very short periods! 40kwh might be closer to minimum for that size
load - and even then you wouldn't want to draw 8kw for more than say
about an hour or so!
You really need to know more about your total power consumption (kwh
per day on average) before you can go much further.

Eric Sears


Posted by Derek Broughton on July 21, 2006, 12:28 pm
 

Eric Sears wrote:


http://www.green-trust.org  

What happened to Steve?  Google says he last posted here on March 23 and in
alt.energy.renewable on March 24.


And you really need to figure out why you have a peak consumption of 8kW.
The very first thing before considering going to wind generation is
reducing your consumption.  If you really _need_ that kind of power, you
probably aren't going to do it on a home wind turbine alone.
--
derek

Posted by wmbjk on July 21, 2006, 3:32 pm
 

On Fri, 21 Jul 2006 09:28:09 -0300, Derek Broughton


He posted yesterday on his own site. Seems he's been busy building a
large wind generator, installing solar water heating, and upgrading
his inverter/charger.

Wayne

Posted by Nick Hull on July 22, 2006, 12:06 pm
 



I agree.  You need to stay connecte to the grid for 99% of your power.  
Maybe you can put in a tiny wind/solar system and a car battery and see
if you can generate enough power for your night lights.

--
Free men own guns, slaves don't
www.geocities.com/CapitolHill/5357/

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