appliance-standards.org/…/how-your-refrigerator-h…
Here’s a good article. From 1970-s to 2014 power use of refrigerators decreased by 4 times. My modern European fridge only uses 270Wh per year, which is even further decrease.
You really do not want to still use a fridge from 1970-s.
Waraugh@lemmy.dbzer0.com 3 months ago
Compressors are variable and much more efficient. More efficient and variable speed fan motors along with more efficient blade design. Insulation now is drastically better than glass wool of the past. Electronics are able to be integrated in order to provide more fine grain control and overall design has been improved just due to efficiency standards being placed on a bright yellow sticker. In the past design and component choices never really considered efficiency, while efficiency doesn’t always win out in design choices it’s a weighted factor and influences the overall engineering and design in ways that just didn’t happen before efficiency regulations came about.
jol@discuss.tchncs.de 3 months ago
Insulation tech is better, yes, but also the insulation of a 40 year old fridge is by now totally fucked.
deegeese@sopuli.xyz 3 months ago
Please explain how fridge insulation degrades with age.
I would assume it’s made of something chemically stable and protected from the environment by the fridge casing.
jol@discuss.tchncs.de 3 months ago
The doors, rubbers, etc definitely degrade very fast. The walls probably not so fast, but the casing also gets beaten up.
Pilferjinx@lemmy.world 3 months ago
Nice, it’s super interesting how far we’ve progressed.