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We’re over-freezing our food. Turning up the temperature slightly could avoid 17 Mt of CO2
(www.anthropocenemagazine.org)
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this post was submitted on 13 Jan 2024
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They're probably already running at the optimum temperature. Power is their main input cost, and they're strongly motivated to minimize it. Meanwhile the average household freezer is set to... Um... how about "7". That sounds pretty cold to me, yeah?
You wouldn't believe how much research has gone into studying things like the optimum way to store potatoes.
My chest freezer doesn't even have numbers on its dial. It just goes
min - mid - max, so ¯\_(ツ)_/¯Edit: The more I think about it, the more I want to get a logging thermometer and a power meter and figure out what temperature and energy use those settings correspond to. The neat thing is, once I finish building my heatermeter I'll actually be able to do it!
I don't know why the dials on fridges and freezers don't have temperatures on them. Is 7 warmer or colder than 3? Is "high" the highest temperature or the lowest? At least my new fridge has additional labels showing that 5=coldest.
Also, I looked at your project. It looks interesting, but it also looks like your project timelines resemble my own! :) I'm 15 years into my "Wall of Text" project and after numerous false starts and changed objectives, it's current state is the welcome page saying I got the server software installed and configured.
Fridges with a dial usually are an uncalibrated simple analog thermostat sensor (often a gas tube with a pressure switch) along with a simple analog control board. Fridges with a digital thermostat tend to use a calibrated sensor (usually a thermocouple) with a digital control board.
Thanks for the answer! I knew there was a reason, but didn't expect it to be as reasonable. The only analog thermostats I'm familiar with have bimetal coils, so that's what was in my head.