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

[Reuben Deumling]

I realized I could add a few more measurements:
interior of existing fridge = rect. solid with 21.6 sq ft of surface (6.35cu ft)
interior of imagined fridge = rect. solid with 49.3 sq ft of surface
(19.05cu ft)

this may simplify calculations.

On 4/4/07, Reuben Deumling <9watts at gmail.com> wrote:
>
> 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
>