Kaltra expands chilled water plant at multi-tenant commercial centre

With the expansion of its premises, a large commercial centre located in Marseille needed to increase the capacity of its chilled water plant to meet the growing demand for chilled water production. Opened in 2014, Les Terrasses du Port occupies the area of more than 60,000 square meters and is a home to around 200 stores, restaurants, and food courts.

The existing system was operating with large-capacity water-cooled chillers plants that supplied chilled water to the building’s tenants. It adopted a primary-secondary pumping system and a total of six chillers with a combined capacity of 4800kW. To cover the demand, Kaltra offered 2 additional water-cooled chillers each producing 170 cubic meters per hour of chilled water. The supplied chillers feature dual water-cooled condensers and two refrigerant circuits filled with R134a gas. Together with chillers, Kaltra proposed its space-saving Mistral series dry coolers equipped with high-performance axial fans and cutting-edge heat exchangers with the small diameter, oval tubes.

With the new chillers and dry coolers provided by Kaltra, the average cooling plant efficiency improved from 5.70 to 5.95 at peak cooling load – based on the data from the energy audit which has been completed after the plant modernization.