In few of our last posts, we have discussed the general importance and uses of evaporative cooling pads, which are used in the systems where a high efficiency cooling is needed. The evaporative cooling pads are also used for various cooling purposes; however, these are especially suitable for the cooling of greenhouses and livestock where higher degree of air velocity is mandatorily required.
Some of the important features of evaporative cooling pads that make them an essential part of greenhouse cooling systems include their high evaporation efficiency and wetting properties, lower pressure drop leading to lower costs of operation, no water carry-over, low scaling, self-cleaning and self-supporting, and longevity. Greenhouses that are located in humid and hot climates necessitate high efficiency evaporative cooling pads for ensuring optimal working and growth of plants.
During hot season of summer, many regions encounter temperatures of more than 40 degree Celsius outside greenhouses. This high temperature directly and negatively impacts production, and hence reduces quality of the plants and products. High greenhouse temperature also impacts the plants’ performance in a negative way and the eventual appearance of the plants tends to result in lower market price. This brings heavy losses for the farmers.
The installation of the greenhouse cooling system, consisting of evaporative cooling pads, is calculated on the basis of on-site data, which includes the solar radiations volume falling on greenhouses and their surfaces. For instance, as a general rule of thumb, for a greenhouse that is 40 by1200 meters in dimensions, around 120 meters of evaporative cooling pads are installed having a height of 2 meters and a thickness of 100 millimeters.
In addition, the installation design also includes a 28 EM50 fans of 1 HP each. The evaporative cooling pads also help prevent an air stratification in winters. They boost the expulsion of the moist air and therefore help avoiding dew formation on ceilings and walls.