Assessing Energy Performance and Environmental Impact of Low GWP Vapor Compression Chilled Water Systems

Rami Mansouri, Baby-Jean Robert Mungyeko Bisulandu and Adrian Ilinca ()
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Rami Mansouri: Laboratoire de Recherche en Energie Eolienne (LREE), Université du Québec à Rimouski (UQAR), 300 All. des Ursulines, Rimouski, QC G5L 3A1, Canada
Baby-Jean Robert Mungyeko Bisulandu: Laboratoire de Recherche en Energie Eolienne (LREE), Université du Québec à Rimouski (UQAR), 300 All. des Ursulines, Rimouski, QC G5L 3A1, Canada
Adrian Ilinca: Département de Génie Mécanique, École de Technologie Supérieure, Université du Québec, 1100, Rue Notre-Dame Ouest, Montréal, QC H3C 1K3, Canada

Energies, 2023, vol. 16, issue 12, 1-16

Abstract: The global concern regarding the environmental repercussions of refrigerants has escalated due to their adverse effects. These substances deplete the ozone layer and intensify the greenhouse effect. International agreements such as the Montreal and Kyoto Protocols and COP21 have imposed restrictions on refrigerants with high global warming potential (GWP) to address these issues. This study aims to explore the feasibility, energy efficiency, and environmental impact of utilizing the HFO (hydrofluoric-olefin) refrigerant R1234ze as a substitute for HFCs (hydrofluoric-carbon) (R134a, R407C, and R410A) and HCFCs (R22) in air-cooled vapor compression refrigeration and air conditioning systems. To determine their effectiveness, we evaluate the energy performance of various refrigerant operating cycles across a wide range of ambient and evaporating temperatures. Additionally, we conduct environmental impact analyses based on the total equivalent warming impact (TEWI) parameter calculated for commercially available chillers that utilize the fluids mentioned above. Our findings indicate that vapor compression chilled water systems employing R1234ze exhibit the highest performance coefficient and the lowest annual TEWI.

Keywords: vapor compression; refrigeration; refrigerants; environment impact; HFO (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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