[Greenbuilding] back of envelope calculation of refrigerator size vs energy consumption

[Reuben Deumling]

I own a refrigerator rated (a very long time ago) by Consumer Reports at 226
kWh/year. The interior volume of this refrigerator is 6 cubic feet. My
question is a theoretical one: If the volume of this fridge were, say,
tripled to 18 cubic feet, and everything else (insulation thickness,
compressor size, refrigerant charge, etc., were held constant, how much
(theoretical) benefit could I expect in the kWh/cu ft? Put another way,
roughly how much less than (3*226 kWh/yr) could we expect this fridge to get
by on?

Thanks.

Reuben Deumling