black dog
Free America
No tomatoes here is a bad word in Red Gold land...
Solar Fields in Place of Cornfields: A Win-Win if There Ever Was One
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No tomatoes here is a bad word in Red Gold land...
Chris0nllyn
Well-Known Member
Nice. How big of a battery bank?
black dog
Free America
What turbine and at what height did you all go with?
mAlice
professional daydreamer
We haven't bought it. I suspect it will go down in the very near future though. The male unit has decided on https://www.ebay.com/itm/Wind-turbi...321357?hash=item441a32ed8d:g:6cEAAOSwhcJWJlwT battery bank not included. Looks like he's going with Missouri for everything, subject to change, of course. Height, unknown.
Chris0nllyn
Well-Known Member
I think you have me on ignore, but know that you'd need a ton of these and panels along with a large (read: expensive) battery bank to run your pool pump and potentially house loads.
It's likely cheaper and way less maintenance to simply get a grid-tied PV system and do away with the battery bank.
black dog
Free America
. So many don't understand E over I = RThe generator world has the same problem..
If you're a prepper off grid is better.
black dog
Free America
Thanks.
Chris0nllyn
Well-Known Member
No doubt, I just think peopel severely underestimate renewable energy sources and don't understand the fact that the sun doesn't always shine and the wind doesn't always blow at 6+mph. To run a 2.5HP pool pump 8 hours a day, you'd need something like a 1600AH battery bank @ 24Vdc. Now add in house loads, losses, recharge time, 30% max discharge and that dinky 1.7kW, 24V wind turbine won't do much.
Certainly not trying to dissuade mAlice or anyone else from going off grid or even staying on grid, but saving on their electric bills, but I'd hate to see an improperly designing the system.
I just finished a design of a 75kW roof PV system. The entire roof (outside of code clearances) is 82' x 136' and is covered with panels. Based on yearly production calcs, it'll make up about 4% of this facility's annual energy usage. That's it. at the low, low cost of $186,000.
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Chris0nllyn
Well-Known Member
They are making progress, especially with higher wattage panels and highly efficient inverters, but panel efficiency is still hovering around 20%. Payback on the job above is expected to be a little over 17 years.
black dog
Free America
What's the field failure rate of panels and high end inverters manufactured today?
Hijinx
Well-Known Member
Good question.
depends on who you ask, the sales hype vs. the data to support it, I always chuckle when people say things about how much money they are saving on their electric bill. They always forget to mention how much that solar payment is.
https://www.solarpowerworldonline.com/2017/06/causes-solar-panel-degradation/
black dog
Free America
You can usually plow through the sales data and what data they give up will show what you really are buying. You will see something like it needs 50 mph of wind to meet it's full amperage of charging.. they forget to tell you it also will self destruct at that wind speed in short order.
I would find it hard to believe that for under 700 bucks you can get even a vintage 80 amp 12 volt delcotron, with a propeller attached and electronics that will long term handle a 100 percent duty cycle of that 80 amp delcotron. That will hold up to continued service.
black dog
Free America
I believe it depends on the quality of battery that was bought to begin with.
My sailboat bank was replaced every six years + - but I have a few gel 12 volts on the farm that came out of banks of battery's that had a short in some of them from when we installed the elevators at Dunes Manor Hotel in OC 20+ years ago that still hold a charge.
