this post was submitted on 13 Dec 2025
20 points (100.0% liked)

Technology

43098 readers
151 users here now

This is the official technology community of Lemmy.ml for all news related to creation and use of technology, and to facilitate civil, meaningful discussion around it.


Ask in DM before posting product reviews or ads. All such posts otherwise are subject to removal.


Rules:

1: All Lemmy rules apply

2: Do not post low effort posts

3: NEVER post naziped*gore stuff

4: Always post article URLs or their archived version URLs as sources, NOT screenshots. Help the blind users.

5: personal rants of Big Tech CEOs like Elon Musk are unwelcome (does not include posts about their companies affecting wide range of people)

6: no advertisement posts unless verified as legitimate and non-exploitative/non-consumerist

7: crypto related posts, unless essential, are disallowed

founded 7 years ago
MODERATORS
all 30 comments
sorted by: hot top controversial new old
[–] queermunist@lemmy.ml 5 points 8 months ago (1 children)

I feel like dumping "waste" heat is the same as burning off "waste" gas from pumping oil.

It's not really just a waste byproduct, there just isn't a profitable way to utilize it. That heat could be used, but we just dump it into the ocean or the atmosphere because it's cheaper than building municipal heating or recycling it for industrial uses.

[–] yogthos@lemmy.ml 3 points 8 months ago (1 children)

China's already doing this with nuclear, so there's a good chance they might do this with data centers too. https://www.world-nuclear-news.org/articles/chinas-first-commercial-nuclear-district-heating-scheme-expands

[–] queermunist@lemmy.ml 2 points 8 months ago (1 children)

I heard about that! Heat from data centers is harder, unfortunately, because the amount of waste heat generated by a nuclear reactor is far higher than the amount generated by a data center. With smaller quantities of heat come greater costs to recuperate it, at least until they link all the waste-heat sources up into a single network that can collect from multiple data centers.

China is moving fast, though. I bet we'll see some kind of project like this before the bubble pops in the US.

[–] yogthos@lemmy.ml 1 points 8 months ago
[–] 3x3@lemy.lol -2 points 8 months ago (1 children)

Boiling the ocean like the Microsoft underwater cloud servers

[–] yogthos@lemmy.ml 3 points 8 months ago (1 children)

The fact of the matter is that air is an incredibly inefficient thermal conductor so data centers have to burn a massive amount of extra electricity just to run powerful fans and chillers to force that heat away. That extra energy consumption means an air cooled facility is responsible for generating significantly more total heat for the planet than a liquid cooled one.

When you put servers in the ocean you utilize the natural thermal conductivity of water which is about 24 times higher than air and allows you to strip out the active cooling infrastructure entirely. You end up with a system that puts far less total energy into the environment because you aren't wasting power fighting thermodynamics. Even though the ocean holds that heat longer the volume of water is so vast that the local temperature impact dissipates to nothing within a few meters of the vessel.

[–] 3x3@lemy.lol 0 points 8 months ago (1 children)

Microclimate will still be altered around these data centres

[–] yogthos@lemmy.ml 2 points 8 months ago