• Efficiency: New high capacity screw compressors (over 1000 kWwith just 2 compressors, 1500 kWwith 3 compressors), water-cooled shell-andtube exchangers specially developed for the gas R-134a. The air-cooled exchangers have been designed andmade in-house to ensure best adaptation to the other refrigerant circuit parts. The compressors are managed with continual adjustment of the capacity and are fitted with an economiser circuit for further operating efficiency. The best compromise is thus reached to boost efficiency while limiting costs;