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Old 10-12-2016, 09:30 PM   #11
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Something to think about, not being able to reinstall a traditional RV refrigerator. If one wants to do some boon docking off the grid, where electricity is at a premium...
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Old 10-12-2016, 10:05 PM   #12
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Solar panels for boondocking could help.


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Old 10-13-2016, 09:06 AM   #13
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Solar panels would be the answer. We try to avoid putting any holes in roofs and sidewalls that aren't absolutely necessary. Plus, depending on fridge mfg...the vent spacing is different per mfg and size of fridge and then you have to figure out how to seal them up for a residential fridge.
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Old 10-13-2016, 10:22 AM   #14
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I'm trying to figure out how much PV solar array a residential self defrosting fridge by itself would require.

Not sure the duty cycle to use since there are so many variables, but if the typical fridge is 615 watts, that is probably drawing 52 amps of 12 volt DC real-time. If it ran 25% duty cycle for 24 hours a day... that is 312 Ah/day. You would need 624 Ah of battery just for the fridge, so not to discharge past 50% ... to be kind to the batteries and have enough array to put that 312 Amps back every day. If you had 7 hours of "peak" sun you would have to have 45 amps - real-time; based only on my 450W making 22 Amps on a very sunny day; possibly 154 Ah/day (could be better if tilted). So, 312 Ah/day would take close to 912 watts of array; just for the fridge; not considering the inherent loss in the inverter and anything else you are running off those batteries. Many / most RVs don't have enough roof surface for 9 or 10 100W panels or 6+ 150 watters. What about days of autonomy? My head hurts!
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Old 10-13-2016, 11:02 AM   #15
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If I was going to take any super C out boon docking/dry camping for more than a day or two at most I would:

1) upgrade the quality and number of batteries.
2) add high quality/high capacity solar
3) focus on using more propane and less electricity: for example, change out the residential refrig for a traditional rv refrig, and pay Dynamax to put in the traditional breathing panels on the exterior.

I would probably want to pull a 3/4 ton truck as well for the additional storage and capabilities.



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Old 10-13-2016, 11:22 AM   #16
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We're looking at an RV fridge for the 5 as an option...but it would probably only be 9 or 10 cu ft. The 12 won't fit.
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