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We’re over-freezing our food. Turning up the temperature slightly could avoid 17 Mt of CO2 (www.anthropocenemagazine.org)

submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/[email protected]

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“This temperature corresponds to 0 degrees Fahrenheit, so it was “probably a round, easy number to remember”

That’s what Allouche and team will be working on next, as they build their research summary into a full report, to be published in September 2024. “These findings give good reasons for ‘3 degrees of change’ to be further explored,” Allouche says.

Three Degrees Of Change: Frozen food in a Resilient and Sustainable Food System (PDF)

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[–] [email protected] 18 points 11 months ago (10 children)

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.

[–] [email protected] 4 points 11 months ago* (last edited 11 months ago) (8 children)

Meanwhile the average household freezer is set to… Um… how about “7”. That sounds pretty cold to me, yeah?

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!

[–] [email protected] 2 points 11 months ago (7 children)

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.

[–] damium 2 points 11 months ago (1 children)

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.

[–] [email protected] 1 points 11 months ago

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.

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