Home > Misting Parts & Accessories > How Much Do Misting Systems Cool?
 How Much Do Misting Systems Cool?Misting systems (line systems) use evaporative cooling to cool the surrounding air. Misting fans cool even more effectively because they combine the effects of evaporative cooling (misting) and convective cooling (moving air). The numbers presented in the chart to the right apply only to line misting systems (not misting fans).Relative humidity (the amount of moisture in the air compared to the maximum amount of moisture the air could absorb at the same temperature) and air temperature are the crucial factors in determining the cooling potential of a misting system. The lower the relative humidity and the higher the temperature, the more water can be vaporized, and hence, the more heat can be removed. Evaporative cooling can be used in most geographical locations because, when temperatures reach their peak during the day, relative humidity is normally at its lowest. The graph to the right shows potential cooling at different temperatures and levels of humidity. To calculate potential cooling, find the relative humidity for the day, follow that to the curve that is closest to the outdoor temperature, then read the potential temperature drop on the bottom line of chart. (Example: 30% humidity (a), 100° temperature (b) = 26° potential temperature decrease.) |
