Air in a room or building may be effectively cooled with evaporative cooling. Swamp coolers and evaporative coolers both move air over or through media that have been submerged in water. The pad’s water evaporation cools the air. The air is then ejected into space after being cooled. Window or vent openings allow warmer air to leave.
Evaporative cooling: Advantages
Swamp cooler vs evaporative cooler is often less expensive to acquire and operate than traditional air conditioners that utilize refrigeration. Based on Energy Saver from the Office of Energy Efficiency & Renewable Energy of the United States Department of Energy. While energy consumption might be almost one-quarter that of central air conditioning systems, installation expenses can be up to one-quarter that.
There are a number of drawbacks to evaporative coolers. To chill the air, they must be able to add moisture to it. They thus perform better if the air is dry.
Cooling & Ventilation via Evaporation
The way evaporative coolers operate is to continuously pull in air, chill it via evaporation, circulate it with fans, and then let warmer inside air leave through open windows. The way the air conditioning system works contrasts sharply with this. Only the air can be treated and circulated since the building has been shut.
An evaporative coolant won’t work if a building’s doors and windows prevent access to external air. Swamp coolers and evaporative coolers are unable to provide central air conditioners with high MERV filtration with the same amount of cleaning filtration. To filter out impurities from the outside air, swamp filters are a common feature of coolers. Compared to high-MERV filters, these filters may not be as efficient.
Getting in Touch with a Water Source
In an evaporative cooler, a water tank serves as a reservoir and distributes water onto the pad to keep it moist. The tank for portable swamp coolers may be manually filled using a hose or bucket. In contrast to non-portable units, other units may also connect to a continuous water supply, but this may be necessary.
Evaporative Cooler Sizing
The volume of air provided by evaporative and swamp coolers may be measured in cubic feet per minute (cfm).
Here are some recommendations to assist you in choosing the proper size for an evaporative chiller.
- To get the required cfm rating for 30 air changes per hour, divide the area’s square footage by the ceiling height.
- For each square foot of area that has to be cooled, you may increase cooling capacity by 500 cfm, which will result in 30 air exchanges per hour in a room with 10-foot ceilings.
Additionally, several manufacturers provide model-specific recommendations for how much area cooling units should cool.
Types of Evaporative Coolers. Window and mobile coolers. Integrated Building Systems
Evaporative coolers come in a few different basic designs.
The most common places to employ a portable evaporative coolant or mobile swamp cooler are warehouses, manufacturing facilities, and outdoor spaces that need spot cooling.
Window chillers are widely used in homes and businesses and can be kept in good condition during the winter.
- They link to ductwork permanently and disperse air throughout the structure.
- Roofs may be used to install central evaporative coolers with down-discharge.