Articles producció científica> Enginyeria Mecànica

Passive intensification of the ammonia absorption process with NH3/LiNO3 using carbon nanotubes and advanced surfaces in a tubular bubble absorber

  • Identification data

    Identifier: imarina:5128696
  • Authors:

    Amaris, Carlos
    Bourouis, Mahmoud
    Valles, Manel
  • Others:

    Author, as appears in the article.: Amaris, Carlos; Bourouis, Mahmoud; Valles, Manel
    Department: Enginyeria Mecànica
    URV's Author/s: Bourouis Chebata, Mahmoud / Vallès Rasquera, Joan Manel
    Keywords: Lithium nitrate Carbon nanotubes Bubble absorber Ammonia Advanced surfaces
    Abstract: The present study aims to quantify experimentally the individual and simultaneous effects of CNTs (carbon nanotubes) and advanced surfaces on the performance of an NH3/LiNO3 tubular bubble absorber. Operating conditions are those of interest for use in air-cooled absorption chillers driven by low temperature heat sources. Firstly, experimental tests were performed with the tubular absorber fitted with an inner smooth surface to analyze the effect of adding carbon nanotubes (0.01 wt%) to the base mixture NH3/LiNO3. Then, the tubular absorber was tested using an inner advanced surface tube both with and without adding carbon nanotubes to the base mixture NH3/LiNO3. The advanced surface tube is made of aluminum and has internal helical micro-fins measuring 0.3 mm in length. Results show that the maximum absorption mass flux achieved with the CNT binary nanofluid and the smooth tube is up to 1.64 and 1.48 times higher than reference values at cooling-water temperatures of 40 and 35 °C, respectively. It is also found that simultaneous use of CNT nanoparticles and advanced surfaces resulted in a more pronounced increase in the absorption mass flux and solution heat transfer coefficient with respect to the smooth tube absorber with NH3/LiNO3 as a working pair.
    Thematic Areas: 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
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: manel.valles@urv.cat mahmoud.bourouis@urv.cat
    Author identifier: 0000-0002-0748-1287 0000-0003-2476-5967
    Record's date: 2023-05-21
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S036054421400173X
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Energy. 68 519-528
    APA: Amaris, Carlos; Bourouis, Mahmoud; Valles, Manel (2014). Passive intensification of the ammonia absorption process with NH3/LiNO3 using carbon nanotubes and advanced surfaces in a tubular bubble absorber. Energy, 68(), 519-528. DOI: 10.1016/j.energy.2014.02.039
    Article's DOI: 10.1016/j.energy.2014.02.039
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2014
    Publication Type: Journal Publications
  • Keywords:

    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
    Lithium nitrate
    Carbon nanotubes
    Bubble absorber
    Ammonia
    Advanced surfaces
    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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