CO2 supermarkets: CAREL

CAREL and the French hypermarket chain Carrefour have joined forces to develop the first subcritical CO2 plant in a supermarket in Turkey. The Istanbul installation uses a cascade system that supplies the low-temperature units with R744. To further enhance energy savings, CAREL implemented floating suction pressure for all compressor racks as well as showcase anti-sweat modulation relay, heat recovery on the compressor rack and a smart/skip defrost function.