It probably wouldn't be great for your CPU, because the temperature required to properly brew coffee is hotter than you really want for your CPU. But maybe get the water to 80C, and a secondary heater after that.
Unless you've got a monster ML workstation under your desk or a crypto mining rig in your garage, that surplus heat isn't especially useful and isn't really worth harvesting. A typical desktop PC only dissipates a few tens of watts at idle or a few hundred watts under heavy gaming loads, versus many kilowatts for a typical domestic water heater.
https://www.gov.uk/government/news/thousands-of-homes-to-be-...
However, there's a fairly straightforward way to get halfway there: You can run a standard heat pump hot water heater and put the computers in the same room with it. The computers will heat the air, the heat pump hot water heater will cool the air. Won't be as efficient as a closed loop system directly connecting the computers to the HW heater but you also won't need to worry about whether the heat production and consumption are balanced.
I doubt the extra piping and infrastructure is anywhere near worth it, but I sometimes fantasize about an experimental building that was designed from the get-go with a single integrated heat loop that all the major appliances were plugged into, and how that might look. Seems like the sort of thing that could be tried in a much more confined space such as for an off-grid RV.
What is probably more feasible is to save on heating costs by heating your apartment partially with your computer.
I really want to get one and pipe all the exhaust from my homelab to it.
And have a reservoir large enough to replenish the closed loop circuit when you press the button.
https://imgur.com/a/mulled-wine-pc-WW1pW
It could get to 60°C which is a bit low for coffee but was great for mulled wine
Don't worry, I'll run an Electron app.
Share and enjoy!
https://en.m.wikipedia.org/wiki/Hyper_Text_Coffee_Pot_Contro...
I used to manage a scientific supercluster, heavily laden with GPUs. We were constantly consuming about 60kW of power. These GPUs were happy to run at 85C, which from other interests I knew to be the temperature where alcohol distillation occurred. I always wanted to install a heat exchanger and distill fuel with all of the waste heat.
really stupid arrangement. slurry from the coffeemaker clogging your rad and cooling block, not to mention corrosion
better would be RO water -> pc -> coffemaker no rad needed
or just have a large reservoir, severely overcool the cpu and cold-brew the coffee
Its objectives lie elsewhere.
https://commons.wikimedia.org/wiki/Category:SGI_Espressigo
https://old.reddit.com/r/SiliconGraphics/comments/1eh9puu/sg...