umm well to start with watercooling is umm..... cooling ur PC with water by running it through tubes that connect to blocks mounted on the CPU/GPU what ever else u want, then the water runs through a radiator to cool the water back down. phase change is kinda complicated and im not sure about it too much., but it is the idea of changing from liquid to gas and back to a liquid to cool. u can buy watercooling kits online or piece them together urself.
