The Performance Analysis of an Integrated CO2 Refrigeration System with Multi-Ejectors Installed in a Supermarket

Energies

Armin Hafner¹  Engin Söylemez¹  Vahid Khorshidi²  Ekaterini E. Kriezi²  Christian Schlemminger³ 

[1] Process and Power Research Group Trondheim, Department of Energy and Process Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway;RAC R&D Danfoss A/S -Nordborgvej 81, 6430 Nordborg, Denmark;Sintef Energy Research, Department of Thermal Energy, 7465 Trondheim, Norway;

关键词: R-744;    integrated CO₂;    supermarket;    transcritical;    ejectors;    power consumption;   

DOI  :  10.3390/en15093142

来源: DOAJ

【 摘 要 】

The field data from an integrated CO₂ refrigeration system installed in a supermarket located north of the capital of Lisbon was analyzed. The goal was to demonstrate the effect and performance of multi-ejectors on a refrigeration system operating in a warm climate. The measurement results for the system with and without activating ejectors were compared. It was observed that the system with a multi-ejector operation had considerable performance superiority. The ejectors improved the cooling capacity of the medium temperature stage of the system by 17.4%. The system with active ejectors had 7.5% less total power consumption compared to the ejector off mode of the same system.

【 授权许可】

Unknown