Industrial dry cooler

3.5MW cooling for backward-integrated xylitol factory

Awarded a contract for cooling equipment supply in 2020, Kaltra recently delivered dry coolers of the total capacity of 3500kW to its customer in Lahti, Finland, a world-known food processing company that constructs an innovative, oat hull-based xylitol production factory. The plant includes a bio-heating facility to produce bioenergy for the xylitol production, mill, and rye crisp production lines.

The new facility spans 4,000m², with an adjacent bio-heating facility. It will receive raw material for xylitol directly from the production plant and become the world’s first fully backward-integrated xylitol manufacturing facility. The products manufactured by the facility have end-use in multiple industries, including food, cosmetics, and pharmaceutical.

Heat rejection demands of the factory will be served by industrial-grade, demand-responsive dry coolers manufactured by Kaltra. The cooling units are equipped with airflow management and are designed for continuous, 24/7 operation at the site’s environmental conditions. Kaltra’s Mistral series dry coolers were selected as the most reliable and efficient solution for large-scale heat rejection.

Four Mistral-W units, each equipped with 18 axial fans and heat exchangers of 6,200m² heat transfer surface, reject about 3.5MW heat by a total airflow of 1 million cubic meters per hour and fluid flow of more than 110L/s – at low sound emission of as low as 49dB(A) at a 10-meter distance, consuming just about 14kW each.

Large Mistral-W units are flagship dry coolers of Kaltra’s extensive lineup, developed for industrial cooling – with time-proven, built-in reliability and intended for year-round use. Mistral-W can be completed with adiabatic spray or evaporative pre-cooling systems for maximum efficiency, EC- or AC-driven fans, fan speed controllers, silencers, and many more accessories to meet the project needs.

Headquartered in Germany and Austria, Kaltra designs, develops, and manufactures air conditioning and refrigeration equipment and systems. The company offers air-cooled, water-cooled, and free cooling chillersprecision air conditionersIT cooling systems, including room-, rack- and row-based solutions, and energy management solutions. It also designs and manufactures air-cooled condensersdry coolers, and cooling units for special applications. Additionally, Kaltra offers microchannel heat exchangers for condenser, evaporator, and water cooling and heating applications, as well as aluminium coils for small cooling applications. All Kaltra products are engineered with the clear objective of improving energy efficiency and reducing total cost of ownership.

For more information on Kaltra and its products call +49 (0) 911 253 421 07 or visit