Energy and exergy analysis of refrigeration systems for refrigerated cabinets

Major efforts have been undertaken to reduce ozone depletion substances (ODS) used in refrigeration systems such as hydrofluorocarbons (HFC). Carbon dioxide (CO2) is recognized as safe, economic and environmentally sustainable. Commercial transcritical CO2 (R744) refrigeration systems have emerged as leading technologies in food retails, especially in cold climate countries. Major research and development challenge is undergoing to increase the performances of R744 cycles in order to compete energetically with HFC based systems. Hence, it is of prime importance to develop a numerical tool and analyze data measurements for the purpose of characterizing the performance of R744 refrigeration food cabinets in Canada. Then, a further analysis of the cycle configuration, operating conditions and design parameters are deemed necessary to optimize its performances. This project aims at developing a numerical tool validated by experimental measurement in order to predict and optimize the performances and operation conditions of CO2 transcritical refrigeration cycles.

Intern: 
Mahmoud Alzoubi
Superviseur universitaire: 
Sébastien Poncet
Province: 
Quebec
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