Quote:
Originally Posted by Karantanec
Fridges use evaporation tehnology and not simple water cooling 
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EH?
Thats on the inside, the grill you see at the back of the fridge is normal convention between pipes and ambient air.
Anyway, the solution you are proposing,assuming you would solder the pipe to the case, would work fine if you put some airflow.
Thats because copper is very fast transfering heat, so even if a small area of the tube is soldered to the case, the heat would easily transfer to it.
How well it works? Do it and tell us how it worked