The dry ice will bring the box temp down and keep the food cold but I think there’s a balance there because I doubt the fridge is running much when the dry ice is keeping things cool. Then the dry ice sublimates and the fridge has to take over. I sensed a “bounce” when that happens. Stopped in a
Smallish town in Nebraska a couple years ago and got a few groceries. Asked if they had dry ice. They did and the lady bagged up a brick for us. At the checkout they did not charge us. When we pointed that out they said “Oh there’s no charge, we do that for the ranchers who have a long drive home and don't bring a cooler.” By night we were in the Colorado mountains and it cooled off and everything leveled out.
Iowa Dave
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Ain’t no trouble jacking a double Burma Shave
Dave
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