12 / 24 volt air conditioner
Ok....so with so many boondockers going the mini split route to run air conditioning off batteries but on those not nights when you pull off the road or into a rest area and you don't want to run the ...
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physics is the limitation, Even if the efficiency is double a conventional rooftop which puts it in the ballpart of high efficiency home units, your still looking at near a 50A draw from 12V, 24V would be around 25A, more tolerable.
If the efficiency is near that of todays RV AC units, double those numbers
Typical RV AC unit at 12A draw is about 1500W=4500BTU AC output is 13K BTU so your running about 3:1, or an Engergy efficient ratio of about 10. (BTU out/wattsin) which actually is a meaningless number, the units don't match. It should be BTU out/bTU in, but then the number is 3x less.
That aside the top AC units approach 20 for a EER, and that still puts you in the 50A range from 12V.
A quick look at the amazon units claim decent efficiency, 750W for 13Kbtu vs the 1400W for a rooftop RV, but still that's around 25A at 24V and it requires 50+A for startup.
If the efficiency is near that of todays RV AC units, double those numbers
Typical RV AC unit at 12A draw is about 1500W=4500BTU AC output is 13K BTU so your running about 3:1, or an Engergy efficient ratio of about 10. (BTU out/wattsin) which actually is a meaningless number, the units don't match. It should be BTU out/bTU in, but then the number is 3x less.
That aside the top AC units approach 20 for a EER, and that still puts you in the 50A range from 12V.
A quick look at the amazon units claim decent efficiency, 750W for 13Kbtu vs the 1400W for a rooftop RV, but still that's around 25A at 24V and it requires 50+A for startup.
