Moving the cooling fan's saturation temperature and saturation pressure The liquid contained in the closed container, the molecules flying out of the liquid surface cannot be expanded to other places, and can only accumulate in the space above the liquid for irregular movement. When some of the gas molecules collide with the liquid surface, they return to the liquid, and some new molecules fly from the liquid surface to the gas space. When the two reach equilibrium, the gas specific volume in the gas space no longer changes, the liquid and Its vapor is in a state of dynamic equilibrium, and the number of molecules in the vapor no longer increases. This state is called saturation. The vapor in this state is called saturated vapor, the temperature of saturated vapor is called saturation temperature, the pressure of saturated vapor is called saturation pressure, and the moving chiller is supercooled and superheated. Under saturated pressure conditions, the saturated steam is continuously heated. The temperature is higher than the saturation overflow, which is called superheat. This vapor is called superheated vapor. The saturated liquid is continuously cooled to a saturation temperature under the condition of constant saturation pressure, which is called supercooling. Yuyao air cooler, Cixi air cooler