The ATMOsphere Review Panel has made its first round selection of commercial refrigeration case studies to be presented at ATMOsphere Europe 2013. Advansor, Carel, Danfoss, Frigo Consulting, the Danish Technological Institute and Emerson Climate Technologies will present real-life examples of some of the most advanced transcritical CO2 systems for supermarkets and convenience stores available today with various examples working efficiently in warm climates.
With the new compSUPER Sigma concept, Advansor integrates cooling, frost, heat recovery and AC into a single plant. The feedback on the delivered compSUPER Sigma system in Sweden has been very positive, especially regarding performance. The innovative system applies technology improvements according to market demand, demonstrating a commitment to both the customer and the technology itself,” says Advansor Sales Director, Torben M. Hansen.
Our case study highlights an example in Germany where a single CO2 unit is capable of managing efficient air-conditioning and heating, as well as low and medium temperature refrigeration loops. It is one of the most advanced systems in the world right now, demonstrating a significant reduction in energy consuption and higher performances in warmer climates,” explains Diego Malimpensa, Application Manager – Retail Solutions at Carel Industries S.p.A.
I see a high potential for this technology in different application fields, due to the simple integration into the CO2 refrigeration system and the enormous efficiency increase thereby,” says Jonas Schönenberger, Research & Development at Frigo-Consulting AG.
First tests show savings of 9% by managing the loads of the refrigeration system instead of just managing compressor capacity. The operation of a supermarket installation has been analysed and avoidance of system oscillations seems to be the way to improve efficiency and explain an apparent potential for savings of 20 to 25%” explains Christian Heerup, Product Manager – Refrigeration and Heat Pump Technology, Energy and Climate at the Danish Technological Institute.
The CO2 scroll, Digital scroll modulation, pre-installed semi-hermetic compressor protection devices and on-board electronics, allow the system to compete with standard HFC Systems meaning convenience store operators can afford to make the transition to CO2. This newly designed CO2 Booster Pack has been tested in Puckelchurch (UK) from November 2012 to July 2013 and is now in serial production. The first sites are being commissioned in various locations in the UK, says Sylvain Lamy, Marketing Manager Refrigeration Compressors at Emerson Climate Technologies.