24 volt freezer setup

[HotSavannahs]

I am looking to set up a 24 volt freezer from SunDanzer https://sundanzer.com/product/dcr225-dcf225/

Some of the specs are

Average Energy Use: DCF225 Freezer-

532 Watt-hrs/day at 32°C 44 Amp-hrs/day at 12V, 32°C

What size battery/solar array would be suggested for powering this while

 

[John Frum]

I am looking to set up a 24 volt freezer from SunDanzer https://sundanzer.com/product/dcr225-dcf225/

Some of the specs are

Average Energy Use: DCF225 Freezer-

532 Watt-hrs/day at 32°C 44 Amp-hrs/day at 12V, 32°C

What size battery/solar array would be suggested for powering this while

Is this the only load?
How many days do you want it to run without sun?
What is your ~ longitude and latitude so that we can get some idea of how much sun you can expect?

 

[HotSavannahs]

That was a snippet from the specification page and that's about all I know for the load. I had included the link also. Information about where I am is San Antonio are: 29°25'26.83"N, 98°29'37.07"W. We have plenty of sun here in Texas. I would expect a couple of days at the most where there would be nothing but battery powered.

 

[NickSpadaro]

That was a snippet from the specification page and that's about all I know for the load. I had included the link also. Information about where I am is San Antonio are: 29°25'26.83"N, 98°29'37.07"W. We have plenty of sun here in Texas. I would expect a couple of days at the most where there would be nothing but battery powered.

I think he means is there any other device you want to power with your solar set up? Besides just the freezer.

 

[HotSavannahs]

I think he means is there any other device you want to power with your solar set up? Besides just the freezer.

Ahhh yeah, duh.. At the moment I do not have any other items to power with this system. However, I would like the ability to be able to expand when and if necessary.

thanks for the clarification.

 

[John Frum]

Ok, for just the freezer and assuming the same efficiency at 24 volts of 532wh per day.
The freezer runs on both 12 and 24 volts.
Do you require a 24 volt system or will a 12 volt system suffice.
I going to assume you require a 24 volt system because you mentioned that the freezer is 24 volt capable.
A fully charged 50ah@24volt drop in lifepo4 battery will get you almost 2 days and cost about $1000.00USD.
25.6 nominal volts * 50 amp hours * 0.8 depth of discharge = 1024 usable watt hours.
1024 usable watt hours / 532 watt hours = 1.92481203 days.
To recharge your battery every day you need to harvest ~1024 watt hours in ~5 hours each day which is about 205 watts per hour.
If you get 2 days without sun your are out of luck, this is usually referred to as days of autonomy.
I think of it as days before generator.
I will leave the solar panel details to someone else because I don't know that part.

Does this make sense?

 

[HotSavannahs]

1. https://bigbattery.com/product/24v-lifepo4-power-wall/ref/8/?campaign=budgetvideosystem
2. https://www.ebay.com/itm/133029697807
3. https://www.amazon.com/HQST-Watt-Po...13f1db773dbbb7671627ed11729817&language=en_US

This does make sense, I am looking into the above link for 1. battery, 2. inverter / charger and 3. solar panels

I feel that this would be more than enough for my current project and also allow me to expand in the future

thanks for the input

 

[John Frum]

3000 watt hours of battery capacity / 0.8 max depth of discharge = 2400 watt hours
2400 watt hours / 532 watt_hours_per_day = ~4.5 days before generator

I'm sceptical of the provenance of that all in one unit.
MPP units are generally considered to be good for the price but noisy and they have a high idle consumption.
Now that you know its an MPP you can research it better.
Maybe you knew that already.

tl;dr
Check with MPP solar before you buy that all in one unit to make sure they are a licenced distributer/manufacturer - MPP solar
You would get ~4.5 days before generator with that battery and just that fridge.
Can you let us know what you find.