Amazing world of Cooling Towers &Evaporative Air Coolers

Cooling towers are heat exchangers that use water and air to transfer heat from air-conditioning systems to the outdoor environment. Most commonly, they are used to remove heat from the condenser water leaving a chiller. Cooling towers are usually located on rooftops or other outdoor sites. Because they are frequently out of sight, they are often neglected by operation-and-maintenance technicians, resulting in lower cooling-system efficiency. This document will help you adopt best practices for the efficient operation and maintenance of cooling towers.

There are two basic types of cooling towers, open and closed (sometimes called direct and indirect).

Open (Direct) Cooling Towers- Open cooling towers expose the condenser water coming from the chiller plant directly to the atmosphere. This warm water is sprayed over a fill in the cooling tower to increase the contact area, and air passes through the fill. Most of the heat is removed by evaporation. The cooled water remaining after evaporation drops into the collection basin and is returned to the chiller's condenser.

Closed (Indirect) Cooling Towers- A closed cooling tower circulates warm water from the chiller plant through tubes located in the tower. In a closed tower, the cooling water does not come in contact with the outside air. Water that circulates only within the cooling tower is sprayed over the tubes and a fan blows air across the tubes. This cools the condenser water within the tubes, which is then recirculated to the chiller plant.

While evaporative cooling is one of the oldest forms of climate control still found today, evaporative air coolers remain a highly sought-after alternative to traditional air conditioning. While very effective and efficient when used properly, these cooling units are not for use everywhere. Due to the evaporative process used by these swamp coolers, these cooling units are best used in hot, dry climates. In these climates, however, an evaporative cooler can be you’re most effective and efficient means of climate control. There are many different benefits of evaporative cooling, like Operational costs and much more. Evaporative swamp coolers are highly efficient and economical cooling devices that, on-the-whole, will operate for less money than an air conditioner. Evaporative coolers cost less to both operate and maintain than their air conditioning counterparts. Due to the cooling process utilized by evaporative coolers, these units work best by circulating outside air throughout your home or office. This ensures that your air is fresh and does not become stale. Evaporative coolers use their simple cooling technology to inject moisture into the air, cooling your home or office through evaporation. This added moisture can keep your eyes and skin from drying out.