Direct Free Cooling enables the potential of cool and moderate outside temperatures to be used over long periods with maximum efficiency anywhere in the world. In temperate zones north and south of the equatorial zone, in particular, users can benefit from the advantage of low consumption.
0 %
24 °
24 °C
Air conditioning with treated outside air
As the name suggests, Direct Free Cooling is the most direct Free Cooling method. To put it simply, it can be compared to opening a window. The outside air gets directly into the room but is additionally treated by filter systems. Despite this, the use of Direct Free Cooling does depend on the quality of the outside air. In other words, wider tolerances have to be allowed for temperature and humidity.
Advantages of Direct Free Cooling at a glance
- Maximum energy efficiency thanks to the direct use of Free Cooling
- Excellent system scalability – no hydraulics (pipework, pumps, valves)
- Lower investment costs compared with conventional Indirect Free Cooling systems
- Much lower energy requirement than all conventional systems
Operating modes
Free Cooling is automatically combined with compressor cooling in four variable stages to suit the outside temperature and cooling needs, ensuring that maximum savings are always achieved:
Benefit from our experience
STULZ has already accomplished numerous Free Cooling projects around the world. That's why we are perfectly aware of the requirements of different countries and continents – and always have precisely the right solution for you: our scalable air conditioning systems are perfectly adapted to the specific parameters of your location, reliably, individually and precisely.
It's important to check which type of Free Cooling best matches your needs, requirements, and intended use – and which solution provides you with the best value throughout the system's life. If you do not want any outside air to get into the sensitive interior of the building, Indirect Free Cooling is the most beneficial solution. Here, the quality of the outside air is irrelevant. Indirect Dynamic Free Cooling from STULZ offers the greatest potential savings.