Stefan Mileschin

Samsung first introduced a water-based cooling system in the Galaxy S7, and just announced a much improved version that will ship in the Galaxy Note 9. The system features a porous, water filled cavity that carries heat away from the SOC using carbon fiber as a highly efficient TIM. In the Galaxy Note 9, Samsung added a copper layer between the 2 different TIM layers and dramatically increased the size of the heatspreader, allowing the device to dissipate far more power under sustained loads than previous generations. Thanks to the improved Water Carbon Cooling system, the Galaxy Note9 can effectively manage heat generated from its powerful processor. With the wider thermal spreader and enhanced Carbon Fiber interface, the cooling system conducts and transmits heat efficiently to the surface of the device, allowing the Galaxy Note9 to operate at peak performance consistently. When compared to the Galaxy Note8, the upgraded cooling system's heat absorption is three times greater and the thermal conductivity is 3.5 times higher.

http://www.hardocp.com/news/2018/08/...lin g_system/