Articles producció científica> Enginyeria Mecànica

Development of optical digital interferometry for visualizing and modelling the mass diffusion of ammonia in water in an absorption process

  • Identification data

    Identifier: imarina:9229552
  • Authors:

    Rives, Ronny
    Salavera, Daniel
    Campos, Juan
    Coronas, Alberto
  • Others:

    Author, as appears in the article.: Rives, Ronny; Salavera, Daniel; Campos, Juan; Coronas, Alberto;
    Department: Enginyeria Mecànica
    URV's Author/s: Coronas Salcedo, Alberto / Rives Sanz, Ronny / Salavera Muñoz, Daniel
    Keywords: Water mixture Water absorption Visualization Simultaneous determinations Optical digital interferometry Non-equilibrium modeling Modelling Mixtures Mass diffusion Marangoni convection Interferometry Heat-transfer Heat and mass transfer models Digital interferometries Diffusion in solids Concentration profiles Coefficients Ammonia/water mixture Ammonia concentrations Ammonia Absorption refrigeration system Absorption refrigeration Absorption experiments
    Abstract: This study reports the development and implementation of Optical Digital Interferometry for visualizing and modelling mass diffusion in the absorption process of ammonia in water. Absorption experiments were performed at infinite dilution of ammonia and at 293 K, 303 K, and 313 K. The method developed makes it possible to visualize the development of the mass diffusion layer and determine the evolution of concentration profiles in the ammonia/water mixture, providing new spatio-temporal data on the absorption process. A non-equilibrium model based on Fick's Second Law was used to describe the mass diffusion process. It was found that the model can successfully reproduce the experimental profiles of the ammonia concentration. The method developed also allows the simultaneous determination of mass diffusivity and mass transfer coefficients from a single experimental test. The values obtained for the mass diffusivity of ammonia in water vary from 1.54 x 10-9 m2 s-1 at 293.1 K to 2.50 x 10-9 m2 s- 1 at 313.1 K. The relative deviations between the experimental mass diffusivity and literature values did not exceed 6.0%. The mass transfer coefficient ranges from 2.12 x 10-5 m s- 1 at 293.1 K to 4.19 x 10-5 m s- 1 at 313.1 K. The results show the potential of Optical Digital Interferometry for the development and validation of heat and mass transfer models used to design components in absorption refrigeration systems.
    Thematic Areas: Thermodynamics Physics, fluids & plasmas Nuclear energy and engineering Mechanical engineering Materiais General chemical engineering Fluid flow and transfer processes Engineering, mechanical Engenharias iv Engenharias iii Engenharias ii Chemical engineering (miscellaneous) Chemical engineering (all) Astronomia / física Aerospace engineering
    Author's mail: alberto.coronas@urv.cat daniel.salavera@urv.cat
    Author identifier: 0000-0002-6109-3680 0000-0003-0061-0581
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0894177721001539
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Experimental Thermal And Fluid Science. 130
    APA: Rives, Ronny; Salavera, Daniel; Campos, Juan; Coronas, Alberto; (2022). Development of optical digital interferometry for visualizing and modelling the mass diffusion of ammonia in water in an absorption process. Experimental Thermal And Fluid Science, 130(), -. DOI: 10.1016/j.expthermflusci.2021.110509
    Article's DOI: 10.1016/j.expthermflusci.2021.110509
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2022
    Publication Type: Journal Publications
  • Keywords:

    Aerospace Engineering,Chemical Engineering (Miscellaneous),Engineering, Mechanical,Fluid Flow and Transfer Processes,Mechanical Engineering,Nuclear Energy and Engineering,Physics, Fluids & Plasmas,Thermodynamics
    Water mixture
    Water absorption
    Visualization
    Simultaneous determinations
    Optical digital interferometry
    Non-equilibrium modeling
    Modelling
    Mixtures
    Mass diffusion
    Marangoni convection
    Interferometry
    Heat-transfer
    Heat and mass transfer models
    Digital interferometries
    Diffusion in solids
    Concentration profiles
    Coefficients
    Ammonia/water mixture
    Ammonia concentrations
    Ammonia
    Absorption refrigeration system
    Absorption refrigeration
    Absorption experiments
    Thermodynamics
    Physics, fluids & plasmas
    Nuclear energy and engineering
    Mechanical engineering
    Materiais
    General chemical engineering
    Fluid flow and transfer processes
    Engineering, mechanical
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Chemical engineering (miscellaneous)
    Chemical engineering (all)
    Astronomia / física
    Aerospace engineering
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