Free-Cooling

Free-cooling takes advantage of the temperature difference between the indoor and outdoor environments to cool for free. In applications where cooling requirements are constant throughout the year, such as in data centers or process applications, free-cooling therefore offers significant energy-saving opportunities.
Thanks to this technology, in addition to the annual energy expenditure, local CO₂ emissions and maintenance costs are also reduced as a direct consequence of the lower use of mechanical cooling. The result is a rapid return on investment and an extension of the useful life of the chiller, as well as maintaining their value over time.

Free-cooling can be total or partial. In the first case the temperature of the outdoor air satisfies the entire cooling request. All the cooling capacity is therefore guaranteed by the outdoor air that passes through the free-cooling coils while the compressors remain off. In this case you get maximum energy savings. When the temperature of the outdoor air is lower than that of the return water, but not enough to obtain a total free-cooling you have partial one: a part of the cooling capacity is provided by the external air while the remaining part from the compressors. Optimized resource management results in hybrid cooling.