Articles producció científica> Enginyeria Mecànica

CFD simulation to investigate heat and mass transfer processes in a membrane-based absorber for water-LiSr absorption cooling systems

  • Dades identificatives

    Identificador: imarina:5129797
    Autors:
    Asfand, FaisalStiriba, YoussefBourouis, Mahmoud
    Resum:
    Absorption cooling systems employing membrane based components provide an interesting opportunity to use the technology for small scale applications. Steady-state heat and mass transfer analyses of a water-lithium bromide membrane based absorber are performed. CFD (computational fluid dynamics) tool ANSYS/FLUENT 14.0 is used to perform the simulation and investigate the behaviour of the heat and mass transfer mechanisms at local levels in the channels. Results show that the solution film thickness is an important parameter which significantly affects the mass transfer mechanism. It was observed that the absorption rate increased by a factor of 3 when the solution channel thickness was reduced from 2 mm to 0.5 mm. In addition, the absorption rate was increased by a factor of 2.5 when the solution inlet flow velocity was increased from 0.00118 m/s to 0.00472 m/s. The solution film thickness and velocity can be independently controlled in plate-and-frame membrane based absorbers. Therefore to design a compact and efficient plate-and-frame membrane absorber with water as a refrigerant, an optimum value of 0.5 mm for the solution channel thickness is suggested and a solution inlet velocity of about 0.005 m/s is recommended to achieve high absorption rates with acceptable pressure drop along the solution channel.
  • Altres:

    Autor segons l'article: Asfand, Faisal; Stiriba, Youssef; Bourouis, Mahmoud
    Departament: Enginyeria Mecànica
    Autor/s de la URV: Bourouis Chebata, Mahmoud / Stiriba, Youssef
    Paraules clau: Water-lithium bromide Plate-and-frame membrane absorber Membrane contactors Heat and mass transfer Cfd simulation Absorption cooling systems
    Resum: Absorption cooling systems employing membrane based components provide an interesting opportunity to use the technology for small scale applications. Steady-state heat and mass transfer analyses of a water-lithium bromide membrane based absorber are performed. CFD (computational fluid dynamics) tool ANSYS/FLUENT 14.0 is used to perform the simulation and investigate the behaviour of the heat and mass transfer mechanisms at local levels in the channels. Results show that the solution film thickness is an important parameter which significantly affects the mass transfer mechanism. It was observed that the absorption rate increased by a factor of 3 when the solution channel thickness was reduced from 2 mm to 0.5 mm. In addition, the absorption rate was increased by a factor of 2.5 when the solution inlet flow velocity was increased from 0.00118 m/s to 0.00472 m/s. The solution film thickness and velocity can be independently controlled in plate-and-frame membrane based absorbers. Therefore to design a compact and efficient plate-and-frame membrane absorber with water as a refrigerant, an optimum value of 0.5 mm for the solution channel thickness is suggested and a solution inlet velocity of about 0.005 m/s is recommended to achieve high absorption rates with acceptable pressure drop along the solution channel.
    Àrees temàtiques: Thermodynamics Renewable energy, sustainability and the environment Química Pollution Modeling and simulation Medicina iii Medicina ii Mechanical engineering Materiais Management, monitoring, policy and law Interdisciplinar Industrial and manufacturing engineering Geografía Geociências General energy Fuel technology Engineering, chemical Engenharias iv Engenharias iii Engenharias ii Engenharias i Energy engineering and power technology Energy (miscellaneous) Energy (all) Energy & fuels Electrical and electronic engineering Economia Civil and structural engineering Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Building and construction Biotecnología Biodiversidade Administração pública e de empresas, ciências contábeis e turismo
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: youssef.stiriba@urv.cat mahmoud.bourouis@urv.cat
    Identificador de l'autor: 0000-0002-0272-7807 0000-0003-2476-5967
    Data d'alta del registre: 2024-09-07
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0360544215010889
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Energy. 91 517-530
    Referència de l'ítem segons les normes APA: Asfand, Faisal; Stiriba, Youssef; Bourouis, Mahmoud (2015). CFD simulation to investigate heat and mass transfer processes in a membrane-based absorber for water-LiSr absorption cooling systems. Energy, 91(), 517-530. DOI: 10.1016/j.energy.2015.08.018
    DOI de l'article: 10.1016/j.energy.2015.08.018
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2015
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Building and Construction,Civil and Structural Engineering,Electrical and Electronic Engineering,Energy & Fuels,Energy (Miscellaneous),Energy Engineering and Power Technology,Engineering, Chemical,Fuel Technology,Industrial and Manufacturing Engineering,Management, Monitoring, Policy and Law,Mechanical Engineering,Modeling and Simulation,P
    Water-lithium bromide
    Plate-and-frame membrane absorber
    Membrane contactors
    Heat and mass transfer
    Cfd simulation
    Absorption cooling systems
    Thermodynamics
    Renewable energy, sustainability and the environment
    Química
    Pollution
    Modeling and simulation
    Medicina iii
    Medicina ii
    Mechanical engineering
    Materiais
    Management, monitoring, policy and law
    Interdisciplinar
    Industrial and manufacturing engineering
    Geografía
    Geociências
    General energy
    Fuel technology
    Engineering, chemical
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Energy engineering and power technology
    Energy (miscellaneous)
    Energy (all)
    Energy & fuels
    Electrical and electronic engineering
    Economia
    Civil and structural engineering
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Building and construction
    Biotecnología
    Biodiversidade
    Administração pública e de empresas, ciências contábeis e turismo
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