ATMOsphere, publisher of, has announced two new CO2 (R744) case studies, on top of the 12 previously announced CO2 case studies, for the upcoming ATMOsphere (ATMO) Europe Summit 2022, taking place in person in Brussels, Belgium, November 15–16.

The two new case studies will be given by Daikin and Fenagy and address CO2 condensing units and heat pumps, respectively.

In addition to the CO2 case studies, three CO2 end users will deliver presentations in the end user panel discussion. They are Olaf Schulze, Vice President, Director Energy Management/Real Estate Sustainability for METRO Properties Holding GmbH; David Schalenbourg, Director Delhaize Technics, for Delhaize Belgium, a division of Ahold Delhaize; and Dr. Aikaterini Boulamanti, Energy Specialist, Coop Switzerland.

Schulze will discuss METRO’s F-Gas-Exit Program, including an update on its rollout of transcritical CO2 systems with ejectors and heat recovery. Schalenbourg will address Delhaize’s integrated transcritical CO2 systems, which include refrigeration, AC and heat reclaim for heating and hot water. Boulamanti will explain the approach Coop Switzerland is taking to refrigeration, which includes transcritical CO2 systems.

Another end user, Mirko Guidetti, Co-Owner of Swiss cold-storage operator Grünenfelder, will discuss its integrated CO2 refrigeration, air-conditioning and heating system, along with Luca Rossi, Engineer Project Manager for Biaggini Frigoriferi, in a case-study session.

This year’s summit, the 12th edition of ATMO Europe, will be held at the Bedford Hotel & Congress Centre in the Brussels city center.

In addition to end-user experiences and industry case studies covering CO2hydrocarbon and ammonia/NH3 (R717) refrigerants, the two-day program will feature policy developments in the EU F-gas Regulation and the REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) regulation.

Other topics will include market updates on heat pumps, the health and environmental impact of f-gas refrigerants, training, SF6-free switchgear technologies, the ATMOsphere Natural Refrigerants Label, and the Cold Chain Innovation Hub (CCI-Hub) in the Philippines. There will also be networking drinks on the evening of November 15.

Those interested in attending the summit can register for tickets here.

Daikin and Fenagy presentations

Outlook over a mass-produced integrated refrigeration and air conditioning system with observations from demonstration sites: Nishant Karve, Environment Research Engineer, Daikin Europe

This presentation focuses on Daikin’s CO2 Conveni-Pack, introduced two years ago as an integrated solution for medium-temperature refrigeration, heating and air-conditioning in a compact condensing unit. It is designed for urban locations, as it occupies 40% less floor space than units providing separately heating cooling and refrigeration.

This solution has been installed at various supermarkets across the EU as part of an ongoing Natural HVACR 4 LIFE, project funded by the European Commission. A theoretical evaluation shows 21% better lifecycle climate performance for the CO2 unit as compared to its R410A counterpart. Observations from these installations will be shared, focusing on the operation and energy assessment, with conclusions regarding key factors affecting the performance of such systems.

The presentation will also show one-year monitoring data at sites in France and Germany, including the summer of 2022. During this summer of 2022 many CO2 systems struggled due to elevated outdoor temperatures, while the Conveni-Pack systems did not experience any technical setbacks.

Experiences from more than 20 projects with air-source CO2 heat pumps in MW-size: Kim Gardø Christensen, CEO, Fenagy

This presentation looks at air-source heat pumps in MW-size used over the last four years for district heating in Denmark, instead of fossils fuels and biomass. The recent projects have been dominated by CO2 as the working fluid and the learning curves has been steep.

Quick start/stops that follow the electrical price signals in the market are one essential ability of these heat pumps, combined with huge hot water accumulation. However, the technical improvement of the solution is also of the utmost importance, demonstrating long life, the highest COP with ejector technology, improved evaporators and PLC-based control algorithms. Finally, installation, commissioning and performance testing are highly important to the utility sector and will be covered in this presentation with main results and learnings.