A comparative study on the environmental impact of supermarket refrigeration systems using low GWP refrigerants
- Univ. of Maryland, College Park, MD (United States). Dept. of Mechanical Engineering
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Energy and Transportation Science Division
Supermarket refrigeration systems have high environmental impact due to their large refrigerant charge and high leak rates. Consequently, the interest in using low GWP refrigerants such as carbon dioxide (CO2) and new refrigerant blends is increasing. In this study, an open-source Life Cycle Climate Performance (LCCP) framework is presented and used to compare the environmental impact of four supermarket refrigeration systems: a transcritical CO2 booster system, a cascade CO2/N-40 system, a combined secondary circuit with central DX N-40/L-40 system, and a baseline multiplex direct expansion system utilizing R-404A and N-40. The study is performed for different climates within the USA using EnergyPlus to simulate the systems' hourly performance. Finally, further analyses are presented such as parametric, sensitivity, and uncertainty analyses to study the impact of different system parameters on the LCCP.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Building Technologies Research and Integration Center (BTRIC)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office; Univ. of Maryland, College Park, MD (United States). Integrated Systems Optimization Consortium (ISOC)
- Contributing Organization:
- Univ. of Maryland, College Park, MD (United States)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1265576
- Alternate ID(s):
- OSTI ID: 1245242
- Journal Information:
- International Journal of Refrigeration, Vol. 56; ISSN 0140-7007
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
GREEN-MAC-LCCP: A Tool for Assessing the Life Cycle Climate Performance of MAC Systems
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journal | October 2010 |
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