yes sorry i am now thinking of going lower because weight it may be the following
2 x 400w panels and 2 x 180ah agm batteries and 2000w hybrid inverter
i will be running the following appliances :
1) 40" LED TV 4hrs am and 6hrs pm 4/5 days aweek
2) android tv box same as tv
3) wifi antenna and booster with tv and box
4) new 15 inch laptop will run for 4/5 hours in morning then charge in afternoon when i am out and nothing on apart from freezer and same at night time then put on charge during sleep.
5) 1 table top freezer for dogs raw food 24hs a day energy rating (F)
6) pump for water taps 15mins a day
7) caravan shower 2 times a week total 20 mins but double that if daughter comes for a few days
8) 4 led downlighters a couple of hours a day
thats about it roughly
what do you think thankyou
Ultimately anything is possible, given unlimited money.....
It seems you are looking to make some radical changes to the electrical system, which as a permanently sited caravan is possible.
You have indicated you want to run your DC system at 24Vdc, and I wonder why? I can understand the prevention of copper losses running 12V at high amperages, and how using 24V reduces them, but you then need to find 24V versions of all your DC powered appliances. I suspect the additional cost of swapping the appliances to 24 will greatly exceed the cost of getting big enough cables for the 12V currents.
You do need to consider making all the equipment as efficient as possible to eek out the usage on a limited battery supply.
In particular as Roger has pointed out the efficiency of an inverter can be surprising, and of the two types that are generally available the best (Pure sine wave - kindest to appliances) is typically only 65 to70%, whilst the more efficient ( Quasi or modified Sine wave) - can cause problems with some appliances) can hit as uo to about 95% under absolute ideal conditions.
You mention a table top freezer. I presume you're referring to a compressor driven unit. These are more efficient than absorption cycle fridges, but when the thermostat demands, they can produce quite a pulse of interference on the power line. If your using a mains unit running from the inverter, the pulse has been known to unsettle some inverters. The alternative is to find one that runs on DC supply. I know they exist for 12V dc, but I haven't looked for any 24V ones Running on the DC supply eliminates the efficiency and load on the inverter.
Thankyou for the list, but without their power consumption rates I can't really to the calculations, but it does seem from what you do tell us your power usage will be greater than a normal touring caravan. You need to include solar panels derating to cover for shorter winter days and of course for when the panel are obscured by dirt, snow, dead leaves and shadows etc.
Perhaps you have already looked into these things, in which case if your calculations are correct then yes it will work.
Good luck
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