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Assessment of Low Global Warming Potential Refrigerants for Drop-In Replacement by Connecting their Molecular Features to Their Performance

  • Identification data

    Identifier: imarina:9241829
    Authors:
    Alba, Carlos G.Alkhatib, Ismail I. I.Llovell, FelixVega, Lourdes F.
    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 o
  • Others:

    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: 2024-07-27
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://pubs.acs.org/doi/10.1021/acssuschemeng.1c05985
    Licence document URL: https://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
  • Keywords:

    Chemical Engineering (Miscellaneous),Chemistry (Miscellaneous),Chemistry, Multidisciplinary,Engineering, Chemical,Environmental Chemistry,Green & Sustainable Science & Technology,Renewable Energy, Sustainability and the Environment
    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
    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
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