this post was submitted on 11 May 2024
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You know that air is harder to cool than water?
It's also harder to heat. That's what heat conductivity means...
Wich is why the motor wastes a lot of energy on cooling itself... Why do you think there is water cooling for electronic?
Air bein a isolator is a bad thing.
Yeah, and I'm guessing most people would prefer that energy be vented through the metal chassis into the air, not into the water they're working in. Heat takes the path of least resistance, and if lower the resistance to entering your body, it'll do that.
Its not vented it's necessary to keep a constant very strong airflow to keep the engine from burning. And heat moves up in both air and water, its not electricity that goes after resistance to find a path. And as said, you can cool the water, more easily than with air even.
Yes, you can cool water for the exact same reason that it heats up really fast.
And yes, it kind of is like electricity, in fact, good conductors of electricity are generally good conductors of heat. Electrical conduction happens through transfer of electrons, so atoms that can easily gain/lose electrons conduct electricity really well. Heat conduction happens through kinetic energy transfer, and and free electrons can transfer that energy to adjacent atoms by moving between them (like they do with electrical energy). It's a very similar mechanism.
Water is a much better conductor of heat than air because it's much more dense. So if you have a metal tank full of water, the heat is much more likely to be conducted through the water inside the tank than the air outside the tank. That's why water cooling is so effective, it sucks the heat away from the hot component, transports it to a radiator, which then spreads out the water (dramatically increasing surface area) to maximize the effectiveness of transferring that energy to the air (more opportunities for the cooler air to collide with the warmer water molecules).
I think you might have a reading comprehension problem man.
Last words to that, hot stuff expands and gets lighter per 1cm³ so hot water flows on top all the time, heat always moves upwards rather than down. Electricity travels very differently than heat does, heat is atom speed and electricity is electrons jumping
Relevant links:
https://en.m.wikipedia.org/wiki/Electricity
https://en.m.wikipedia.org/wiki/Heat_transfer
That's just not true. Heat moves along the path of least resistance, not "up," "up" just happens to generally be less resistance than "down" due to density differences in air.
From your second link:
Density matters. Free electrons matter. But in short, metal and water conduct heat better than air, which means the heat transferred is more likely to go into the water than into the air. Certain metals conduct heat better than other metals, largely due to electrical conductivity.