Good Sam Club Open Roads Forum: My DC Compressor Fridge conversion in progress
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 > My DC Compressor Fridge conversion in progress

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StirCrazy

Kamloops, BC, Canada

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Joined: 07/16/2003

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Posted: 09/09/19 08:02am Link  |  Quote  |  Print  |  Notify Moderator

c.traveler2 wrote:

StirCrazy wrote:

SidecarFlip wrote:

The one I'm looking at, max draw is 6.5 amps at 100% duty cycle but less than 1.2 amps cycling.



is there any stats on how many Ah one of these fridges would draw over a 24 hour period? would be nice to see something say at a 40 degree cabnet temp in 90 degree weather parked in the sun it used so many Ah.

Steve


I have this refrigerator Dometic CR1110, this link has some information that may answer some of your questions but on my unit.

Dometic CR1110


This refrigerator will stay below 40 degrees on days that are over a 100.


it half answers ut, they show comparison in percentage of running time, then they give you average amps, but they don't list the amps of it running full out. but it does give me and idea, thanks

Steve


2014 F350 6.7 Platinum
2016 Cougar 330RBK

toddb

az

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Joined: 07/21/2011

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Posted: 09/12/19 05:01pm Link  |  Quote  |  Print  |  Notify Moderator

Well I got this squared away and was able to test it. The problem with the temp stall was how notcold measures the temp. The fins get super cold with the compressor fast, since the thermistor is directly on the fin it was short cycling the compressor and the fridge wouldn't come down more. I pulled it off and let it hang just in front of the fins.

Fridge set on 2: Temps recorded by the wireless thermometer.
Started the night before and let run.
Time fridge freezer outside batt soc
8am 36.1 12.7 85.6 75.6
9am 35.1 6.6 85.6 72.6
I bumped the temp to 3 at 9am
9:50 34.7 5.4 90.7 66.4
11:40 34.9 3.7 98.6 57.7

I moved the camper out of the carport to see how well my solar panels would keep up. Not a great solar day, many low puffy clouds.
12:05 turned solar on battery at 57.3 soc fridge set to 1 to try and maintain 38-40*.
13:00 37.2 battery died 95.9 61.7
14:00 38.8 " 97.7 68.2
15:00 38.8 10.9 99.5 73.8
16:00 38.8 7.7 98.2 77.1
17:00 37.9 6.1 95.0 78.0

Compressor speed set with 270ohm resistor and I printed a fan shroud that helped with subcooling.

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