Author, as appears in the article.: Alba, Carlos G.; Alkhatib, Ismail I. I.; Llovell, Felix; Vega, Lourdes F.;
Department: Enginyeria Química
URV's Author/s: Llovell Ferret, Fèlix Lluís
Keywords: Vapor-liquid-equilibrium Vapor compression refrigeration Thermodynamic properties Soft-saft equation Saturated pressure measurements Pure fluids Polar soft-saft Phase-equilibria Next-generation Molecular structure-thermophysical properties Ionic liquids Hydrofluoroolefins Heat-capacities Environmentally friendly refrigerants Drop-in replacements Cascade absorption-refrigeration vapor compression refrigeration thermodynamic properties soft-saft equation saturated pressure measurements pure fluids phase-equilibria next-generation molecular structure-thermophysical properties ionic liquids hydrofluoroolefins heat-capacities environmentally friendly refrigerants drop-in replacements cascade absorption-refrigeration
Abstract: The use of hydrofluorocarbons (HFCs) as an alternative for refrigeration units has grown over the past decades as a replacement to chlorofluorocarbons (CFCs), banned by the Montreal's Protocol because of their effect on the depletion of the ozone layer. However, HFCs are known to be greenhouse gases with considerable global warming potential (GWP), thousands of times higher than carbon dioxide. The Kigali Amendment to the Montreal Protocol has promoted an active area of research toward the development of low GWP refrigerants to replace the ones in current use, and it is expected to significantly contribute to the Paris Agreement by avoiding nearly half a degree Celsius of temperature increase by the end of this century. We present here a molecular-based evaluation tool aiming at finding optimal refrigerants with the requirements imposed by current environmental legislations in order to mitigate their impact on climate change. The proposed approach relies on the robust polar soft-SAFT equation of state to predict thermodynamic properties required for their technical evaluation at conditions relevant for cooling applications. Additionally, the thermodynamic model integrated with technical criteria enable the search for compatibility of currently used third generation compounds with more eco-friendly refrigerants as drop-in replacements. The criteria include volumetric cooling capacity, coefficient of performance, and other physicochemical properties with direct impact on the technical performance of the cooling cycle. As such, R1123, R1224yd(Z), R1234ze(E), and R1225ye(Z) demonstrate high aptitude toward replacing R134a, R32, R152a, and R245fa with minimal retrofitting to the existing system. The current modeling platform for the rapid screening of emerging refrigerants offers a guide for future efforts on the design of alternative working fluids.
Thematic Areas: Renewable energy, sustainability and the environment Química Materiais Interdisciplinar Green & sustainable science & technology General chemistry General chemical engineering Farmacia Environmental chemistry Engineering, chemical Engenharias ii Engenharias i Ciências ambientais Ciências agrárias i Ciência de alimentos Chemistry, multidisciplinary Chemistry (miscellaneous) Chemistry (all) Chemical engineering (miscellaneous) Chemical engineering (all) Biotecnología Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: felix.llovell@urv.cat
Author identifier: 0000-0001-7109-6810
Record's date: 2023-02-19
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://pubs.acs.org/doi/10.1021/acssuschemeng.1c05985
Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Acs Sustainable Chemistry & Engineering. 9 (50): 17034-17048
APA: Alba, Carlos G.; Alkhatib, Ismail I. I.; Llovell, Felix; Vega, Lourdes F.; (2021). Assessment of Low Global Warming Potential Refrigerants for Drop-In Replacement by Connecting their Molecular Features to Their Performance. Acs Sustainable Chemistry & Engineering, 9(50), 17034-17048. DOI: 10.1021/acssuschemeng.1c05985
Article's DOI: 10.1021/acssuschemeng.1c05985
Entity: Universitat Rovira i Virgili
Journal publication year: 2021
Publication Type: Journal Publications
Repositori URV