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Cake day: September 13th, 2023

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  • I’m reminded of a Linus Tech Tips video in which they built a gaming PC with the express purpose of heating a room/house. To do this more effectively, they connected a bog-standard water cooling loop to an actual radiator like you would find plumbed into an old building, instead of using a purpose built PC water cooling radiator like every other water cooled PC ever built (I guess because they either thought it wouldn’t dissipate enough heat (in which case why not just use more of them?) or because they forgot those existed). They flushed the radiator with water and vinegar before putting it to work and what came out of it was… colorful. Even after flushing it much more thoroughly, after putting it into the final setup, the system did not perform anywhere near as well as expected due to the copper water blocks inside the PC getting covered in rust and stopping conducting heat. Those systems are no joke.





  • Fire sprinklers have two requirements: to be able to turn on immediately if they’re ever needed, and to dispense something capable of extinguishing a fire. In order to accomplish this, the pipes that feed them are constantly, 24/7, full of water, providing constant pressure on the sprinkler head to be ready to feed it with water in case it ever needs to go off. These water pipes are generally not used for anything else, so the water does not tend to circulate. In fact, there’s usually a sensor in them that detects if the water is flowing (and thus if any sprinklers have been triggered, providing somewhere for it to go) and activates the building’s fire alarm. When a fire sprinkler goes off, the water that comes out has been sitting in that pipe (an iron pipe if you’re lucky, a lead pipe if you’re not) basically since the building was built.

    That stuff is NAS-T.