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a demonstration of its continued commitment to natural refrigerants, supermarket giant Carrefour has joined over 90 other French companies in signing the 2018 French Business Climate Pledge, which sees signatories reaffirm their climate-change mitigation efforts for the next three years. In total, signatories of the pledge represent six million jobs and some €1,500 billion of turnover or net banking income. The signatories have committed over €320 billion for the period 2016-2020. Overall the Carrefour Group is aiming to reduce carbon emissions by 40% by 2025 and by 70% by 2050 (compared to 2010 levels). There are around 12,300 stores under the Group banner in 35 countries and five continents. Carrefour is taking action at two levels: the primary direct sources of CO 2 emissions (energy consumption and use of refrigerants), and indirect

sources – the carbon footprints of the goods that it sells and their transportation in particular. Jean-Michel Fleury is director of international support at Carrefour, where he oversees innovation in energy efficiencies for all the group’s entities around the world. Carrefour has invested around €150 million in phasing down HFCs and replacing them with CO 2 systems since 2015. It has primarily been focusing on installing CO 2 systems in supermarkets and hypermarkets, but is also employing them in convenience stores, says Fleury.

BRINGING CO 2 TRANSCRITICAL TO TURIN As part of this strategy, the retailer fitted its new hypermarket in the Italian town of Nichelino, near Turin, with a state-ofthe-art CO 2 transcritical system with parallel compression, heat recovery for tap water and facility heating (400 kW), and liquid and gas ejectors.

Designed by Swiss refrigeration consulting and engineering company Frigo-Consulting, at the system’s heart are two booster racks conceived to provide 360 kW of mediumtemperature (MT) refrigeration at -2°C and 72 kW of low-temperature (LT) refrigeration at -26°C. “With CO 2 technology there will be no impact by the F-Gas Regulation,” says Dario Agostini, the project manager in charge of the Nichelino system at Frigo-Consulting. “The installation will probably have a longer life.” The racks supply a sales area of 7,500m2 featuring 380m of cabinets and 570m2 of refrigerated rooms. “The gas and liquid ejectors, combined with the parallel compression, facilitate savings in energy consumption, because they are reducing the compressors’ work and the throttling losses on the high-pressure valve,“ Agostini says.

Accelerate Italy // February 2018

Accelerate Italy: Special Edition: February 2018  
Accelerate Italy: Special Edition: February 2018  

FROM ITALY TO THE WORLD: NATURAL REFRIGERANTS IN THE HOME OF INNOVATION The designers and architects of the Memphis Group produced post-mo...