Energy efficient residential refer amp draw

Texas Two Steppers wrote:
Does anyone have information from a reliable source on the amp draw (@ 12v) of an energy efficient residential refers over a 24 hour period under normal operating conditions? (By normal operating conditions I mean full of food, opening and closing 20-30 times a day with an outdoor temp of 85ish.)

I have a 10cu ft Haier home fridge I put into my TT.. I measured it at 90W running (.75A) with a name plate rating of 1.1A.

As you can see my fridge is drawing slightly less than the name plate rating.

I measured the run time as about 20-25 minutes per hr averaging about 22 minutes per hr. Heat doesn't seem to bother it much from what I have been able to tell. We often overnight while traveling during the summer and the temps at night are often 80F..

Now opening and closing 20-30 times a day and that time will be thrown out the door.. I would expect you will have run times closer to 30-40 minutes per hr when accessing it that often.

Something to consider in your calculations is pretty much all home fridges are "frost free". That means that they will operate a defrost cycle which turns on a heater element in the freezer to melt the frost off the coils.. On my fridge that is about a 250W heating element.

My defrost cycle is ONCE every ten hrs of compressor run time.. For traveling I rigged my defrost timer with a switch to disable the defrost cycle.. I reenable the defrost once I get to my destination with shore power..

Depending on the humidity I can go as long as 6 or 7 days before the fridge starts not work as good as it should without defrosting it.