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Adiabatic cooling
Adiabatic Cooling Systems – Sustainable Climate Control for Industrial and Commercial Buildings
Adiabatic cooling, also known as evaporative cooling, uses the natural principle of water evaporation to lower air temperature. The energy required for this evaporation is taken from the surrounding air, resulting in effective, low-energy cooling – especially during hot summer periods.
Mark Climate Technology offers a complete range of adiabatic cooling units for different applications, from direct evaporative cooling for workshops to indirect adiabatic cooling integrated in heat recovery units.
There are two main types of adiabatic cooling: direct and indirect.
Direct Adiabatic Cooling
In direct systems, the air to be cooled – usually outside air – passes through a water-saturated medium or is sprayed with purified water via reverse osmosis membranes. As water evaporates, the air temperature drops and the humidity increases slightly.
COLDSTREAM – Direct Adiabatic Cooling Unit
The Mark COLDSTREAM is designed for direct adiabatic cooling. Fresh outside air flows through water-moistened cellulose filters, where natural evaporation reduces the air temperature in an eco-friendly and energy-efficient way.
Key benefits:
- Environmentally friendly cooling method
- Low energy consumption
- Minimal maintenance requirements
- Ideal for large spaces like workshops, garages, and welding halls
Indirect Adiabatic Cooling
In indirect systems, the cooled air from the evaporation process does not enter the room directly. Instead, it transfers its cooling capacity through a heat exchanger to another airstream – usually outside air. This ensures the supply air is cooled without increasing humidity levels.
AIRSTREAM HYBRID – indirect adiabatic cooling
Mark offers the AIRSTREAM HYBRID for indirect adiabatic cooling. This Eurovent certified heat recovery unit is equipped with an adiabatic cooling section in the return of the heat recovery unit. In the summer, the exhaust air is humidified, resulting in adiabatic cooling. The cold air is delivered to the warm outside air via the heat exchanger. The humidity of the fresh air will not increase as a result.
The AIRSTREAM HYBRID is also equipped with a DX cooler (heat pump). By switching this on, the humidity in the room will decrease further. This will further improve the operation of the adiabatic cooling on very hot days with high humidity.
By applying this principle, ventilating cooling can be carried out at very low operating and maintenance costs. The system is also very environmentally friendly. In winter, the AIRSTREAM HYBRID fully functions as an high efficiency heat recovery unit and the heat pump can be used as a postheater.
Adiabatic Dry Cooling
Adiabatic dry cooling combines the efficiency of a traditional dry cooler with the benefits of evaporative pre-cooling. By lowering the temperature of the incoming air before it reaches the heat exchanger, the system can significantly improve cooling performance and reduce the load on mechanical refrigeration equipment. This makes it a highly efficient option for applications where energy savings and reliability are key priorities, such as data centres, industrial processes, and large-scale HVAC installations.
Mark AWS-EPA Adiabatic Dry Cooler
The AWS-EPA series combines a dry cooler with an integrated adiabatic pre-cooling system. Incoming air is cooled before it reaches the coil, which boosts cooling capacity and delivers significant energy savings.
Performance results:
- Dry climates: Up to 15°C below maximum outdoor temperature
- Medium to humid climates: 5–10°C below maximum outdoor temperature
Ideal for industrial processes, server rooms, and HVAC system optimisation.
More information?
At Mark Climate Technology we offer a wide range for cooling your building. Would you like more information? Please contact us. We are happy to provide you with free advice.