A cooling tower is what’s known as a “heat rejection device,” which extracts waste heat to the atmosphere through the cooling of a water stream to a lower temperature. These kinds of cooling towers are called “evaporative,” because it allows a small portion of water being cooled to evaporate in a moving air stream to provide significant cooling to the rest of that stream. The heat from the water stream transferred to the air stream raises the air’s temperature and its relative humidity to 100%, and this air is discharged into the atmosphere. This type of cooling water towers are commonly used to provide significantly lower water temperatures than can be achieved with “dry” heat rejectio
Sweeper trucks, at the most basic level, consist of rotating brushes, vacuums, filters, and collectors. The brushes loosen the dirt (sometimes with the aid of a sprayer), the vacuum creates an airstream that picks up the dirt, the filters catch the dirt, and the collectors… well, collect the dirt. While there may be different configurations, the premise is the same.