> I would kind of expect the energy consumption of a fridge to be related to the surface area of the cooled volume rather than the volume itself. I'd expect th

> I would kind of expect the energy consumption of a fridge to be related to the surface area of the cooled volume rather than the volume itself. I'd expect that for a fridge that's permanently closed, but what if you open it regularly? I'd expect a lot of the cold air inside (so volume) to mix with the room-temperature air once you open it..?