Autor segons l'article: Rives, Ronny; Salavera, Daniel; Campos, Juan; Coronas, Alberto;
Departament: Enginyeria Mecànica
Autor/s de la URV: Coronas Salcedo, Alberto / Rives Sanz, Ronny / Salavera Muñoz, Daniel
Paraules clau: 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
Resum: 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.
Àrees temàtiques: 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
Adreça de correu electrònic de l'autor: alberto.coronas@urv.cat daniel.salavera@urv.cat
Identificador de l'autor: 0000-0002-6109-3680 0000-0003-0061-0581
Data d'alta del registre: 2024-01-13
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0894177721001539
URL Document de llicència: http://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Experimental Thermal And Fluid Science. 130
Referència de l'ítem segons les normes 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
DOI de l'article: 10.1016/j.expthermflusci.2021.110509
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2022
Tipus de publicació: Journal Publications
Repositori URV