Pretty close Dave :) last measurement was 35.96F in fridge, and 76.64F in van.
So that is about a 40F degree diff.

My fridge had the fins cleaned, and the (added) internal fan was not on. I do not think I had the mains water port aux fan on. That mod, in which you gut the city water port and add a fan so that it vents the body space behind the fridge, is a worthy mod. I would guess it would add few degrees to the temp difference. But I think it would be maxing out the potential of the system.

In the field, I found the big killer is the sun beating down on the fridge side of van. I have rigged up a space blanket (the fabric reinforced shiny mylar type) to shade that part of the van. Without the shade that part of the body is hot to the touch.

alistair

On 2013-06-10, at 8:16 PM, Dave Mcneely wrote:

> ---- Jeff Palmer <jpalmer@MYMTS.NET> wrote:
>> Impressive!  Am i reading that right?  After three hours, solely on propane, hardly any change in interior temperature, and you're almost at freezing?  Any tips?  Interior fan to circulate air or something?
>> 
>> I can get that kind of cooling with shore power but propane takes longer - or so I assume since i haven't kept track like you did :)  And I never use 12V.
> 
> Actually Jeff, he had an ambient temperature drop from low 80s F to mid 70s F, and achieved a refrigerator temperature of about 36 F.  mcneely