Byrnerc, I think you have a great idea!
Try it out.
I think itís all in the duty cycle. Thatis, how long itís allowed to run per whatever time unit.
Iím guessing a cooling
plate will get too cold when itís running since it wants to freeze. Iíd bolt a nice size heatsink to it with heat sink compound. Use a cheapo electronic thermostat to control the temp of the heatsink to maybe 60F.
Use a timer to run the fridge setup as above, and the fan that runs air over it for, start at 1 hour/ day and see what you get.
Open the drain on your icebox
to ensure the dripping water
gets into a sump pump
and pumped overboard
units take roughly 5A. At least mine does. It runs roughly 50% duty cycle. So, itís equivalent to 2.5A long term. So, thatís 2.5Ah/day load.
A 100 watt panel creates 8A. The general rule
is multiply by 5 hours for a day of insolation on average. So, thatís 40Ah/day supply.
The compartment is largely sealed, so no large continuous source of humidity. Temp cycling will bring in a little moisture every day.
Iím an engineer
and have studied this area.