Does an adiabatic cooler work in hot and humid environments?

Adiabatic coolers are the most effective solution in terms of comfort and sustainability for cooling large industrial environments, hangars, railway workshops, and commercial areas.

Thanks to their simple operation based on the principle ofwater evaporation , these “air conditioning” systems can lower the temperature inside work areas by several degrees without drying out or cooling the air excessively. Instead, they add a percentage of humidity to keep the air fresh and healthy without causing the discomfort of dry air, which can lead to throat irritation.

As mentioned in the previous article, the temperature reduction is influenced by the humidity percentage in the air.

How much does an evaporative cooler lower the temperature?

For this reason, one of the questions we are frequently asked is: do evaporative coolers also work in a hot and humid environment?

Water-based coolers are effective even in hot and humid environments

The efficiency of an evaporative system depends on the relative humidity present in the outside air; summing up the concept in a few lines the hotter and drier (lower humidity) the day, the better the performance.

Starting from this concept, we can infer that the presence of a high humidity level partially limits the “amount of heat” that can be removed through the exchange that occurs between the air and water during the cooling cycle.

There is however a fundamental aspect to keep in mind: usually during the hottest summer days the humidity rate does not always remain constant: with an increase in air temperature, always corresponds to a decrease in the relative humidity rate.

We can see this very well in the graph below:

Analyzing three typical days of July, considered the hottest month of the year, in Verona (Italy), we can see that as temperature increases,the relative humidity of the air drops considerably reaching 40% or less in the hottest hours, when the outside temperature exceeds 30 °C..

In this case, therefore, an evaporative cooling system finds itself working in very favorable conditions, introducing into the working environment fresh and comfortable air, useful to ensure the psychophysical well-being of workers.

What happens, instead, on days when the external humidity values remain high throughout the day?

What happens to water coolers if the humidity rate remains high and constant throughout the day? You might be wondering.
As we can easily understand, the system’s performance will be slightly lower and the temperature drop of the “treated” air will be minimal. Nevertheless, the temperature reduction will still bring clear comfort benefits.

The situation is different during the evening and nighttime hours when, with the temperature dropping, the humidity rate tends to increase, as it is evidenced in the graph: when the temperature reaches 18 °C , humidity reaches a percentage that exceeds 80%.

In such conditions, the Eucold evaporative system directly exploits the mild temperatures of the external air, by introducing it into the environment without the need for cooling and therefore without using water for greater savings.

Would you like more information on how the EUCOLD evaporative cooling system works?
Read our blog article, where we explain in detail what it is, its operation and the many advantages that this type of system offers.

Evaporative cooling: what it is, how it works and why to choose it.

If you are looking for an efficient and effective solution in terms of comfort and sustainability for cooling your company, contact us. Our sales department will be at your disposal to provide you with all the information you need.

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