OMS:
You could start with a browse through IEC TC 59 and work "down" from there.
Basically, for EU use, manufacturers adopt a standard test methodology so comparisons are equitable between brands and models - the so called "ISO" test methods
They use an index that compares the appliance’s energy consumption with its internal volume, to show how energy efficient it is for its size.
Alasdair Anderson:
The other thing to consider is how the modern fridges/freezers achieve the improved efficiency, which is through better insulation. In part I think the newer insulation materials are more effective but they are also increased in thickness compared to older models. You will probably find that for the same (external) size of fridge or freezer you have less internal volume to store food (or whatever else you may want to store....).
Alasdair
mapj1:
. . .
Also, site your fridge in a place where it can be easily cooled - it would be possible to make a fridge where the waste heat went to heat the washing up water, but as far as I know, no-one does, but at leat make it have an easy life.
. . .
Denis McMahon:
OMS:
You could start with a browse through IEC TC 59 and work "down" from there.
Basically, for EU use, manufacturers adopt a standard test methodology so comparisons are equitable between brands and models - the so called "ISO" test methods
They use an index that compares the appliance’s energy consumption with its internal volume, to show how energy efficient it is for its size.Thanks, OMS, this is helpful information. I presume the energy labels one sees on new fridges are based on these tests. Standardised testing enables one to compare new fridges. The data are less precise for comparing with older models in use, but at least one can make some estimates.
You will probably find that for the same (external) size of fridge or freezer you have less internal volume to store food (or whatever else you may want to store....)
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