24 volt system help, newbie

[Naptown]

Hello to all and thanks in advance!
I'm designing a solar system for an earthship I am about to build. Here are the components I was thinking of:

~950 watts worth of solar panels and a 500 watt wind turbine.
An MPPT 60 amp charge controller
24 volt battery bank (four 12 volt, 220 amp batteries)
Pure sine 2,500 watt inverter.

My questions:
What am I missing/what goes between these components?
What is the recommended choice for charge controller/inverter?
Any problems/suggestions?

Thanks again!

Right, no matter what I would not discharge the batteries more than 50%. If that means I have to shut stuff off that's fine but I doubt I'll not have sun for that long, being in the desert.
With 10,000 watts I should be able to run my essentials for 2 days without discharging more than 50% with no power production.

With 950W of solar which you will at best case get 70% of x say 3.5 hours a day of insolation during the winter that only accounts for 2150 watt hours a day. The rest would need to be made up by the turbine. At 500 Watts of Turbine assuming you have the wind 24/7 to produce much(very unlikelymore like about 1/4 that amount) that will contribute another 3000 watt hours a day.
If you are using 7000WH a day add it up and you will see you are in a deficit position. Be wary of what a wind turbine will produce.
At rated power the wind needs to be at about 25 MPH if less than the output will be the inverse of the square of the rated output

[Sunking]

What??? That's not at all what I wrote or asked.

It is exactly what you said and asked. I quote you directly:

With 10,000 watts I should be able....

[Anton]

10,000 watts was battery storage not input, input is little less than 1 kw with 500 watt turbine, 60 amp mppt charge controller, 2500 watt pure sine inverter.
Question is what charge controller/inverter do y'all suggest?

[Naptown]

10,000 watts was battery storage not input, input is little less than 1 kw with 500 watt turbine, 60 amp mppt charge controller, 2500 watt pure sine inverter.
Question is what charge controller/inverter do y'all suggest?

If you have a battery bank capacity of 10000 watts and you have a load of 9000 watts as stated in your other posts. See a problem here with state of discharge?
( Hint it's 90% at your figures)
Now look at the cycle charts of the major battery manufacturers and look at the cycles vs depth of discharge. (remember you are discharging your batteries 90% daily)

To add to this at this level why are you even considering 24V. At minimum you should be looking at 48V

[Sunking]

10,000 watts was battery storage not input, input is little less than 1 kw with 500 watt turbine, 60 amp mppt charge controller, 2500 watt pure sine inverter.
Question is what charge controller/inverter do y'all suggest?

10,000 watts is a measurement of instantaneous power, not electrical energy. Battery stores electrical energy measured in Watt Hours. It is a very complicated formula that take 16 years of formal education to master, or 5th graders outside the USA

Watt Hours = Watts x Hours

Example a 100 watt light bulb uses how much energy in 10 hours? Answer 100 watts x 10 hours = 1000 watt hour = 1 Kwh

[inetdog]

At rated power the wind needs to be at about 25 MPH if less than the output will be the inverse of the square of the rated output

Let me take a crack at that. If the wind speed is 25/X then the power is (rated power)/X^3.

So in a 12.5 MPH wind you would get 1/8th of rated power and in an 8.3 MPH wind you would get 1/27th of the rated power.

[Naptown]

Let me take a crack at that. If the wind speed is 25/X then the power is (rated power)/X^3.

So in a 12.5 MPH wind you would get 1/8th of rated power and in an 8.3 MPH wind you would get 1/27th of the rated power.

something like that (show off)

[russ]

All of which says that in less than hurricane conditions the usual 500 watt turbine puts out zip.

[inetdog]

All of which says that in less than hurricane conditions the usual 500 watt turbine puts out zip.

And in hurricane conditions it either rips your roof off or falls off the tower onto your house.

[Sunking]

And in hurricane conditions it either rips your roof off or falls off the tower onto your house.

Solar panels will go with the wind too.

[russ]

Overlooking the 25 to 30 mph wind speeds required to meet the 500 watt specification turbines are considered to have a capacity factor of between 10 and 35% - that is the portion of the time the put anything out

Not to mention the data mentioned is only if the turbine is on a tall tower.

[Anton]

Chest freezer 1.5kwh/day
Chest freezer converted to fridge .4kwh/day
Water distiller 3kwh/day
Induction cooktop 2kw/day
Misc 1.5kwh/day

MAX usage/day 8.4kwh/day

On cloudy days I don't run the distiller, I put ice in chest fridge so it stays at temp and I cut out the misc.

MIN usage/day 3.5kwh/day

~950 watts pv, 500 watt turbine
60 amp mppt charge controller
2500 watt pure sine inverter
Start with 4 220 amp 12 volt batteries wired to 24 volt, when finances allow ill add 4-6 more batteries.

I will be in the Texas desert near big bend.

What's wrong with this set up?

[SunEagle]

And in hurricane conditions it either rips your roof off or falls off the tower onto your house.

So how many hurricanes does West Texas get? That is where Anton plans to build. For that matter how much wind will he get?

Check out those Earthship homes he is talking about. Pretty cool architecture.

[Sunking]

Chest freezer 1.5kwh/day
Chest freezer converted to fridge .4kwh/day
Water distiller 3kwh/day
Induction cooktop 2kw/day
Misc 1.5kwh/day

MAX usage/day 8.4kwh/day

On cloudy days I don't run the distiller, I put ice in chest fridge so it stays at temp and I cut out the misc.

MIN usage/day 3.5kwh/day

~950 watts pv, 500 watt turbine
60 amp mppt charge controller
2500 watt pure sine inverter
Start with 4 220 amp 12 volt batteries wired to 24 volt, when finances allow ill add 4-6 more batteries.

I will be in the Texas desert near big bend.

What's wrong with this set up?

Real simple, your system is not capable of generating 8.4 Kwh/day. Your peak Summer Sun Hours is April at 6.9 Hours and low is December 4.8. Assuming you use a MPPT Type Controller at best in April you can only generate 950 watts x 6.9 hours x .66 efficiency = 4.43 Kwh/day, and in December 950 watts x 4.8 hours x .66 efficiency = 3.01 Kwh/day.

If you need 8.4 Kwh/day will require a 2600 watts of solar panels, 65 amp MPPT controller, operating @ 48 volts battery into a 875 AH battery.

[Anton]

Real simple, your system is not capable of generating 8.4 Kwh/day. Your peak Summer Sun Hours is April at 6.9 Hours and low is December 4.8. Assuming you use a MPPT Type Controller at best in April you can only generate 950 watts x 6.9 hours x .66 efficiency = 4.43 Kwh/day, and in December 950 watts x 4.8 hours x .66 efficiency = 3.01 Kwh/day.

If you need 8.4 Kwh/day will require a 2600 watts of solar panels, 65 amp MPPT controller, operating @ 48 volts battery into a 875 AH battery.

Ok, thanks!
I was missing that .66 efficiency calculation.
So my "system" would be good for half my needs, or very close to my needs minus the distiller...thanks sunking!