Adiabatic cooling - principle and types of solutions

Adiabatic cooling is a cooling system based on a natural principle: cooling the air by evaporation of water.

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In concrete terms, the new air passes through humid media. As the water evaporates, it absorbs heat and cools the air, which is then forced into the building. This process allows us to obtain coefficients of performance (COP) of 25 to 40 in summer for the Seeley International machines that we distribute, which makes it the most efficient process on the market.

Thanks to these efficiencies, which are much higher than the rest of the market, adiabatic is the most economical solution on the market and allows to limit energy costs while enjoying real comfort.
On top of that, since the process works without refrigerant gas, adiabatic is the only ecological solution on the market.

Two types of adiabatic exist. Although they are based on the same principle, there is a major difference.

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The direct adiabatic cooling (Breezair range)

The direct adiabatic process is the most common application of the adiabatic solutions. Warm, dry outside air passes through the humidified media. Upon contact with the air, the water evaporates and the air temperature drops. This cooled air is then sent into the building by the fan.

This system slightly humidifies the air. To avoid tropicalizing the interior, humidity sensors are placed and allow to manage the humidity level by limiting the humidification of the media while the humidity level is lowered.

This system works in many types of professional buildings in Belgium: sports halls, industry, stores, offices...

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The indirect adiabatic cooling (Climate Wizard range)

This is the major innovation in the sector of cooling. The installations are also based on the adiabatic process butthe heart of the machine differs.

The outside air enters the system and passes through the dry channels. Thanks to a counter pressure, half of the air returns to the machine and passes through the wet channels. It comes into contact with the evaporating water. The other half of the cooled air is blown into the building's ducts.

The great innovation, compared to the more common indirect operation, comes from this back pressure. The air that evaporates in the wet channels is already cooled by the dry channels, which cools the heart of the machine even more.

With this operation, the fresh air sent into the building is dry air.

In Belgium, our professional customers install it more regularly in offices, for data centers and in health care centers. It can also be installed as a pre-cooling of an existing air handling unit or cooling unit to drastically reduce the workload or upstream of a ventilation unit to supply fresh air to apartments.

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The advantages of an evaporative cooler

Whether direct or indirect adiabatic, the system offers many advantages:

• Air-conditioned living spaces throughout the year,
• Up to 90% less power consumption compared to traditional cooling ,
• A constant air renewal, therefore a clean and healthy air,
• Different types of installations, both as independent groups and as a complement to existing cooling groups in order to reduce their workload,
• Extended life span of the installations (+15 years),
• Virtually no environmental impact, as the machines operate without refrigerant gas.

Moreover, the performance of the cooler depends on the quality of the media. Seeley International, which designed the installations that Bioclimas distributes, has achieved performance levels never before attained on the cooling adiabatic market. These installations offer blowing temperatures below 20°C in the middle of summer in Brussels.

You therefore benefit from fresh air at a lower cost and with almost no environmental impact. Interested? Simulate on our website the savings you will make with our systems.