[clausont]

Very interesting thread here. I have been considering retrofitting our top loading ( stock on our Cal 2-29) icebox with a refer of some description. I have considered either Peltier junction (cheap - simple) of Stirling cycle (cannibalized Coleman Stirling). I have learned a lot here such as the Peltier junction is quite innefficient and would not likely be a good candidate fo such a project on a boat with minimal energy sources (no wind gen or solar panels.)
What Witzgall talks about is just what I had in mind. The insulation around our box is 2" foam on all sides and I could add more to that fairly easily.
I will post results here if I ever actually do this experiment.
Has anyone here already done a project like this? I would love to hear how you did it and what the results were.