In the field of refrigeration, there is a device that is vividly called “evaporative cooling”, the full name of which is evaporative condenser. It is like an efficient magician, which can magically transform gaseous refrigerators into liquids, providing indispensable cooling support for many industries.

First, let’s explore why evaporative cooling is so named. In the internal structure of evaporative cooling, a circulating water pump is hidden in the lower part. This water pump is like a beating heart, constantly transporting water to the top of the refrigerator inlet. Then, the water is sprayed on the surface of the internal pipe, as if covering the pipe with a layer of cool water curtain. When this water encounters the high-temperature refrigerant in the pipe, a wonderful “evaporation” phenomenon takes place.
The refrigerant begins to evaporate under the catalysis of high temperature, and the temperature of the refrigerant drops rapidly during this process. At the same time, the fan on the top of the evaporative cooling also joins this “performance”, blowing strongly, driving the air to flow faster. This flowing air is like a diligent cleaner, constantly taking away the water vapor near the water surface, further reducing the partial pressure of water vapor, and providing a continuous source of power for the continuous evaporation of water.

Under a certain pressure, as the heat of the refrigerant continues to be lost, the thermal motion of the refrigerant molecules gradually slows down, and the distance between the molecules gradually decreases. When the temperature of the gaseous refrigerant drops below its saturation temperature, a miracle happens – the refrigerant changes from gas to liquid. This change not only marks that evaporative cooling has completed its mission, but also brings efficient cooling effect to the entire refrigeration system.