DC compressor fridge power usage question
Hey guys - Looking for some help on a fridge topic. First post and have been reading as much as possible on this forum as well as others on the topic... has been very helpful. Quick summary of my ...
Forum Discussion
Denny & Jami wrote:
One thing to remember when looking for a fridge with a 12v compressor is the compressor is still 120v AC it just has a dedicated inverter built into the box mounted on the side of it. You can do the same thing with a standard compressor but mount a dedicated inverter close to your battery to eliminate running heavy 12v wiring to the fridge.
Denny
Uh, NO, that is not correct.. The compressor is not 120 volt.. Not sure what the voltage is (48 perhaps) but it is not 120 volts.
In either this or another thread a refrigeration engineer who is very vry familure with the Danfoss and it's competitors posted the facts, Alas, I am not him and did not properly remember the voltage but it was either 24 or 48 as best I can recall.
I have not seen a residential fridge that draws less than 100 watts running, that is, when translated to 12 volt with the aid of an inverter, roughly 10 amps.. The Danfoss/sling/(one more name I do not recall) compressor units usually draw less than FIVE amps. So you can NOT simulate one with an inverter and a residential fridge, Simply not possible. Residential fridges burn at least 2x the power (closer to 4x in most cases).
