How does the honeycomb design of a Greenhouse honeycomb evaporative cooling pad affect its cooling effect?

The honeycomb design of a Greenhouse honeycomb evaporative cooling pad creates a series of interconnected small channels or units, which are like tiny evaporation chambers. The wall of each channel can serve as an interface for water evaporation and heat exchange with the air. Compared with traditional flat plate or simple mesh designs, the honeycomb structure greatly increases the contact area between water and air. This means that in the same volume, more water can be exposed to the air, which speeds up the evaporation rate and absorbs heat from the air more effectively. Evaporation is an endothermic process, so the increased evaporation area directly improves the cooling ability of the cooling pad.
In a greenhouse environment, hot air is sucked into the evaporative cooler by a negative pressure fan and then flows through the honeycomb cooling pad. The honeycomb structure not only increases the contact area, but also carefully designs the air flow path. When passing through these small channels, the air is forced to travel along a tortuous path, increasing the contact time and contact area with the wet wall surface. This design ensures that the air can be cooled more evenly, avoiding local overheating or overcooling, and improving the overall cooling efficiency.
The honeycomb design is not only about cooling performance, but also important for improving the physical stability of the cooling pad. By increasing the complexity of the structure, the honeycomb cooling pad is better able to resist mechanical stresses such as wind, vibration, etc., and prolong its service life. In addition, this design also helps to reduce the accumulation of scale and impurities because the water is more easily distributed during the flow, reducing the risk of clogging, thereby maintaining the efficient operation of the cooling pad.
When the heated air is drawn into the evaporative air cooler, it first contacts the moist honeycomb cooling pad. The heat in the air is transferred to the water on the pad through heat conduction and convection, causing the water to begin to evaporate. During the evaporation process, the water changes from liquid to gas, which requires a large amount of heat, which mainly comes from the air itself. Therefore, as the water evaporates, the temperature of the air gradually decreases, while the humidity increases, producing cool, moist air.