Evaporative cooling relies on evaporation to chill the air. Hot and dry outside air is pulled through water-soaked cooling pads using evaporation processes. When air passes over these pads, the water evaporates and the heat in the air is absorbed, lowering the air temperature. A fan circulates cold air around the house via a duct network.
The key to successful evaporative cooling is to ensure that each of the Evaporative Cooling Pads is thoroughly saturated during operation and that the system’s fan and motor are sized and configured to provide the necessary airflow for the space. The evaporative cooling air technique works by evaporating liquid water into vapor while retaining the energy in the air.
The heat utilized to evaporate water into water vapor is known as latent heat of evaporation (hidden heat that cannot be measured with a thermometer).
This natural phenomenon of latent heat is the only reason that evaporative cooling is conceivable. As a result, the team’s temperature and sensible heat (that you can feel or perceive) fall. The addition of moisture vapor to the air raises the humidity and latent heat of the air. An evaporative cooler is a technology that uses water evaporation to chill air. Traditional air conditioning systems employ chemical vapor compression refrigeration cycles, whereas evaporative cooling does not.
This natural phenomenon is described by the phrase evaporative cooling; however, numerous other titles with the same meaning are routinely used, including evaporative air conditioning, adiabatic cooling, ducted evaporative cooling, swamp coolers, and desert coolers.
Benefits Of Evaporative Cooling
There are several advantages to using evaporative air cooling, and there has never been a better time to invest in an evaporative air conditioner that is easy to maintain and run and provides great product performance.
With energy prices rising and summers often characterized by heat waves, evaporative air conditioning provides a major and growing advantage over refrigerated cooling in terms of energy efficiency, healthier air movement, performance, and lifestyle.
How Does Evaporative Cooling Work In Different Climates?
To understand how evaporative cooling works in different climate zones in the United States, it is necessary to review evaporative cooling concepts. Sensible heat from the air is transferred to latent heat as water evaporates, lowering the temperature. When dealing with evaporative cooling, two temperatures are critical.
This is the temperature we often conceive of as air temperature, as measured by a standard thermometer exposed to the air stream. In the United States, the temperature is often expressed in degrees Fahrenheit.
The Temperature Of The Wet Bulb
This is the lowest temperature that water vapor can get by saturating the air. The wet-bulb temperature is a measure of the potential for evaporative cooling as water evaporates into the air. The relative humidity may be calculated using the dry and wet bulb temperatures.
Evaporation occurs when the relative humidity falls below 100% and the air begins to absorb water. Any given volume of air can carry a specific quantity of water vapor, and the degree of absorption is determined by the temperature at which it begins and the amount of vapor it currently contains.
The phrase relative humidity refers to how much water is already in the air in comparison to how much it can store. When air can no longer retain any more water, it is said to be saturated.
Water requires energy to transform from liquid to vapor. This energy is derived from the air itself via an adiabatic process. When air enters an evaporative air cooler, it gives up sensible heat energy to evaporate water. The dry bulb temperature of the air traveling through the cooler is reduced as a result of this operation.