There are several significant differences between vacuum cooling and water cooling, but here are the main differences between them:
First of all, from the perspective of cooling principle, vacuum cooling is mainly based on the fact that vapor water molecules have higher energy than liquid water molecules, and the boiling point of water is reduced by reducing the air pressure, thereby accelerating the evaporation of water, absorbing latent heat during the evaporation process, and rapidly cooling the material. Water cooling, on the other hand, uses liquid to rapidly cool the material, and takes away the heat of the equipment through the water flow to achieve the purpose of cooling.
Secondly, their cooling media are also different. The vacuum-cooled medium is mainly the moisture inside the material, which is cooled by the evaporation of water, while the water-cooled medium is the cooling water, which absorbs and takes away the heat of the equipment through the circulation of the water flow.
Furthermore, from the point of view of cooling efficiency, vacuum cooling can usually achieve a faster cooling, because it directly uses the evaporation of water inside the material to absorb heat. Although the cooling rate of water cooling is also very fast, it may be slightly inferior to vacuum cooling.
In addition, the two are also different in terms of application scenarios. Due to its fast and low impact on material quality, vacuum cooling is especially suitable for materials with high water content and large surface area such as leafy vegetables. Water cooling is more widely used in various equipment that needs to be cooled quickly, such as bottle blowing equipment.
To sum up, there are obvious differences between vacuum cooling and water cooling in terms of cooling principle, cooling medium, cooling efficiency and application scenarios. When choosing which cooling method to use, it needs to be considered according to the specific material characteristics and cooling needs.
