「Vapor Chamber」

The vapor chamber is a vacuum cavity with microstructures on its inner walls. When heat is conducted from the heat source to the evaporator section, the working fluid inside the cavity begins to undergo phase change in the low vacuum environment. At this point, the working fluid absorbs heat energy and rapidly expands in volume.
The vapor phase of the working fluid quickly fills the entire cavity. When the vapor phase working fluid comes into contact with a cooler area, condensation occurs. Releasing the accumulated heat from evaporation.
After condensation, the liquid phase working fluid returns to the heat source through capillary action of the microstructures, and this operation continues cyclically within the chamber, constituting the operation principle of the vapor chamber. Furthermore, because the working fluid can generate capillary forces within the microstructures during evaporation, the operation of the vapor chamber is not affected by gravity. The theory of the vapor chamber is similar to that of a heat pipe; however, while a heat pipe conducts heat in one dimension, the isothermal plate conducts heat in two dimensions. Therefore, theoretically, the heat conduction capability of the vapor chamber is much greater than that of a heat pipe.