You two have different types of condenser heat exchangers. The OP has a low density, flat hx that uses natural convective forces to release heat. These condensers are hard to improve upon.
Ecomodded has a high density, "pipe sandwich" exchanger in his fridge. These use forced air (via a small, quiet fan) to move the heat away. This is the type of unit I use to make really efficient space heaters or dehumidifiers out of. I also use the condensing unit assemblies as refrigerant reclaimers and vacuum pumps. The lineset that runs to the evaporator in the box is long and flexible enough to run out a window or through a small hole, and conveniently comes with its own fan as well. Not as efficient as the low density types, but easier to hack.
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