We can define adiabatic air conditioning as the psychometric process of adding water to an air mass. In such a way, the latent heat to evaporate the water is obtained from the sensible heat of the air and cooled in this way. But, as we said, this sounds very technical and we would like you to understand it practically and simply. That is the purpose of this Intersam article, so read on.
What is adiabatic air conditioning?
Adiabatic air conditioning is an evaporative cooling system in which the equipment in charge of said process cools the air by evaporating water. It should be noted that it is a technique applied both in different industrial processes, as well as in farms and sports buildings. Similarly, it is used in heat transmission processes, considering that other systems do not exchange energy with the environment.
How does it work?
In short, to cool a room using the adiabatic system, the equipment involved only requires water. That is the ambient temperature of the airdrops thanks to the water. The steam cooler captures hot, dry air from outside, circulating it through a wet evaporative panel. In effect, this process causes the air to acquire a lower temperature, taking advantage of the water evaporation process, to be later transferred to the environment. In this way, we manage to lower the temperature and humidify the interior of the room at adequate levels.
Another important fact is that the temperature of the supplied air will be between 6° and 20°C lower than that of the outside air. An interesting fact about this system is that it reduces water consumption by up to 95% and energy consumption by up to 40%.
Components of an adiabatic air conditioning unit
In general, adiabatic air conditioning equipment is made up of a box that has evaporative panels made of porous material. These membranes allow water to evaporate constantly. In parallel, using a fan, either axial or centrifugal, sucks in the hot air and makes it circulate through the water-soaked filters. Thus, the air is cooled and then emitted into the environment to achieve the desired air conditioning. One of the benefits obtained by having this ventilation is the feasibility of cooling any installation, regardless of its size.
An important point to keep in mind is that this type of system does not spray the water at any time. Rather, what it does is cool the air through evaporation. It is pertinent to mention that adiabatic air conditioning systems rely solely on the process of evaporation of water naturally. Consequently, it allows both its energy consumption and its maintenance to be lower, unlike other types of systems. Without detriment to this, they condition the humidity and temperature, to achieve greater well-being and comfort. As if that were not enough, these adiabatic air conditioning systems are completely ecological, since they do not use any type of chemical product or gas to cool buildings or industrial spaces.
Application of adiabatic air conditioning in industry
Before proceeding to install an adiabatic air conditioning system or any other, at an industrial level, it is essential to carry out a preliminary study of the warehouse in which it will be incorporated. Once the requirements to cover the structure are known, the space can be heated with adiabatic equipment. Together, it is convenient to carry out the corresponding temperature and humidity controls. With this procedure, we will not only be able to refresh the environment but also favor the conservation of the products.
Without a doubt, one of the most essential factors in a company is the productivity of the employees in their jobs. Maintaining an adequate temperature will allow human talent to carry out their work activity without any inconvenience. On the other hand, not having this condition can generate an adverse effect on the profitability of the organization. That is why the issue of air conditioning at the industrial level is an important factor. Well, optimal industrial ventilation is key for employees to achieve the maximum possible performance.
Likewise, it is pertinent to point out that adiabatic coolers have the possibility of operating in two states, consuming water only if necessary:
Free cooling or “dry” mode
The units that work under this free cooling mode act during most of the year as a conventional dry cooler, without requiring water consumption. At the same moment, the heat carried by the water is dissipated in the ambient air. This phenomenon occurs due to the convection of the air force by the fans.
The adiabatic mode is automatically activated only if the dry mode is not sufficient to maintain the leaving water temperature at a maximum preset set point and during periods of high ambient temperature. The ambient air at high temperature, before entering the finned exchanger, enters through the “adiabatic chamber“. There it receives the humidity, causing it to end up pre-cooling. In this case, the control system has the function of continuously regulating the amount of water evaporation, if necessary. In this way, it manages to maintain the desired set point.
So what can adiabatic devices do at an industrial level?
Through these evaporative air conditioning systems, it is possible to remove bad odors, dust, smoke and thermal stress. Additionally, it reduces the levels of accidents or absenteeism and increases the labor productivity of the staff. Precisely because the equipment helps maintain a suitable and pleasant temperature to work without any inconvenience.
On the other hand, the level of humidity obtained through these evaporative devices is the most convenient for both work activity and industrial processes. Another advantage offered by these devices is that they are easy to maintain and their installation is not a problem.
Get to know Intersam’s iDrop adiabatic air coolers and condensers
At Intersam we know in-depth and apply adiabatic air conditioning technology to our iDrop lines of IDV and IDW air coolers and ICW and ICWH condensers. This system works by cooling the ambient air through an evaporative panel up to 95% relative humidity. As a result, we get an air temperature similar to the wet bulb. Once this air is cooled and saturated, the coils of the condenser or air cooler are cooled. The fluid runs through the cellulose panels and, in this way, the temperature of the circulating air drops significantly.
The Intersam products of this series consist of high-performance condensing batteries made of 5/8” and 0.4mm thick copper tubes. Or, in 5/8” AISI 304L stainless steel with a thickness of 0.8mm. Apart from that, they have corrugated ALMG, copper or aluminum fins spaced 2.1mm apart and can be finished with Bronz-Glow or Epoxy treatments. The frame is made of stainless steel, copper, aluminum or riveted galvanized sheet metal and has a floating system that prevents possible breakage of the tube due to vibrations or expansion. Lastly, a system of collectors with loading howitzers guarantees that the installation is free of leaks.
In addition, the fans are provided with 400V / 50hz three-phase motors with a diameter of 910mm; an External rotor with protection degree IP-54, double speed and low consumption, in compliance with ErP regulations. In the specific case of dry coolers, they are equipped with EC motors from ZIEHL-ABEGG or EBM, prestigious German manufacturers with extensive experience reflected in their high-tech materials. For your protection, all units have high-performance protection grilles on their helical fans.
Furthermore, the evaporative panels are from the prestigious Munters brand, characterized by their long durability, simple cleaning and easy maintenance.
Are you interested in adiabatic air conditioning for your company? Do not hesitate to contact us!