Cooling Pad in Evaporative System: A Review

Evaporative cooling is an economical and environmentally friendly method of air conditioning and cooler, especially suitable for hot and arid regions. The cooling pad is a key component in this system, enabling the evaporation process. As warm air flows through the water-soaked pad, heat is absorbed, resulting in a drop in air temperature. The effectiveness of the cooling pad is influenced by factors like its material, thickness, porosity, and ability to retain water. This review examines different types of cooling pads, such as cellulose, wood wool, metal mesh, and synthetic materials, evaluating their benefits and drawbacks. It also explores critical performance aspects, including cooling efficiency, pressure drop, and durability. Additionally, it addresses challenges like clogging, microbial growth, and maintenance concerns while highlighting recent advancements like nano-coatings, antimicrobial treatments, and hybrid material innovations. By analyzing the function and optimization of cooling pads, this study offers valuable insights for improving evaporative cooling systems, making them more efficient and sustainable.