![]() if there was a wall right behind you however, you could not step away. ![]() if you stand right next to it, it will be hot, and might even burn you, but if you step a few feet away, the volume of the air the heat is filling is enough to make it more comfortable for you. Our hardware is constantly radiating heat, and our fans are constantly blowing air through our systems, in the hope that we can put enough heat into that air, and blow the air out and new air in to continuously cool the system to a sufficient degree.įinally, consider a camp fire. If we can't get it away, then it will stay where it is, and eventually damage our hardware. The CPU and other components are constantly converting electricity into heat as a side effect of their operation, and that heat is bad for them if it reaches a certain point, so we need a way to get the heat away from our critical components, as quickly as possible. No heat will enter the air in that circumstance. This also means that you can never use Air to cool a system to a temperature lower than the room temperature. ![]() Since heat never just disappears, our approach to cooling always focuses on how to evacuate the heat to another place. Its like how water flows to the lowest level. When heat moves it must always move into another medium (the air, the case, the heatsink, just about anything) that has less heat than the medium it is currently in ( Entrophy). So Heat is energy, which means that there is a quantifiable amount of it in an area at any given time, and it doesn't just disappear, it has to go somewhere ( Conservation of Energy). Well, its a matter of thermo and fluid dynamics.
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