R744.com – ATMO Europe: Integrated CO2 System Cuts Energy Use by 30% at Swiss Cold Storage FacilityR744.com –

Luca rossi, Biaggini presenting case study on HVAC&R technologies at ATMO Conference, networking event about natural refrigerants

An integrated CO2 (R744) refrigeration, heating and cooling system installed last year by Swiss cold storage operator Grünenfelder in Quartino used 30% less energy than the previous system that used R507A and R404A for cooling and heating.

That finding was reported by Luca Rossi, Engineer, Project Manager of Biaggini Frigoriferi, a Swiss manufacturer of CO2 commercial and industrial refrigeration systems that supplied the integrated system, called TotalGreEnergy. Rossi described the project last November at the ATMOsphere Europe Summit, held in Brussels; he was accompanied by Mirko Guidetti, co-owner of Grünenfelder, a family-run company specializing in the distribution of food and non-food products.

The integrated CO2 unit provides the store’s refrigeration, HVAC, and hot water production requirement in a single system throughout the year. Previously, the store had an R507A refrigeration compression rack and a reversible R404A heat pump for refrigeration, HVAC, and hot water. 

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