Articles producció científica> Enginyeria Mecànica

Boiling heat transfer and pressure drop of NH3/LiNO3 and NH3/(LiNO3 þ H2O) in a plate heat exchanger

  • Identification data

    Identifier: imarina:5129619
    Authors:
    Taboas, FranciscoBourouis, MahmoudValles, Manel
    Abstract:
    This paper presents the experiments carried out to determine the flow boiling heat transfer coefficient and associated frictional pressure drop in a plate heat exchanger which uses the binary fluid mixture ammonia/lithium nitrate and the ternary fluid mixture ammonia/(lithium nitrate þ water) with a water content in the absorbent of 20% by weight. The effects on the flow boiling heat transfer coefficient and two phase frictional pressure drop are analysed with a heat flux range of 5e20 kW m2, a mass flux of 50 e100 kg m2 s1 and a mean vapour quality of 0e0.2. The mass flux greatly influenced the flow boiling heat transfer coefficient, whereas the addition of water only produced a slight increase. The measurements taken experimentally indicated that the parameters with a pronounced effect on the frictional pressure drop were vapour quality followed by mass flux. Finally, the correlations proposed in Taboas et al. [1] used to predict the flow boiling heat transfer coefficient and frictional pressure drop were well in agreement with the experimental results.
  • Others:

    Author, as appears in the article.: Taboas, Francisco; Bourouis, Mahmoud; Valles, Manel
    Department: Enginyeria Mecànica
    URV's Author/s: Bourouis Chebata, Mahmoud / Vallès Rasquera, Joan Manel
    Keywords: Plate heat exchanger Lithium nitrate Flow boiling Ammonia Absorption refrigeration
    Abstract: This paper presents the experiments carried out to determine the flow boiling heat transfer coefficient and associated frictional pressure drop in a plate heat exchanger which uses the binary fluid mixture ammonia/lithium nitrate and the ternary fluid mixture ammonia/(lithium nitrate þ water) with a water content in the absorbent of 20% by weight. The effects on the flow boiling heat transfer coefficient and two phase frictional pressure drop are analysed with a heat flux range of 5e20 kW m2, a mass flux of 50 e100 kg m2 s1 and a mean vapour quality of 0e0.2. The mass flux greatly influenced the flow boiling heat transfer coefficient, whereas the addition of water only produced a slight increase. The measurements taken experimentally indicated that the parameters with a pronounced effect on the frictional pressure drop were vapour quality followed by mass flux. Finally, the correlations proposed in Taboas et al. [1] used to predict the flow boiling heat transfer coefficient and frictional pressure drop were well in agreement with the experimental results.
    Thematic Areas: Thermodynamics Matemática / probabilidade e estatística Interdisciplinar General engineering Engineering, mechanical Engineering (miscellaneous) Engineering (all) Engenharias iii Engenharias ii Engenharias i Condensed matter physics Ciências ambientais Astronomia / física Arquitetura e urbanismo
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: mahmoud.bourouis@urv.cat manel.valles@urv.cat
    Author identifier: 0000-0003-2476-5967 0000-0002-0748-1287
    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/S129007291600051X
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: International Journal Of Thermal Sciences. 105 182-194
    APA: Taboas, Francisco; Bourouis, Mahmoud; Valles, Manel (2016). Boiling heat transfer and pressure drop of NH3/LiNO3 and NH3/(LiNO3 þ H2O) in a plate heat exchanger. International Journal Of Thermal Sciences, 105(), 182-194. DOI: 10.1016/j.ijthermalsci.2016.02.003
    Article's DOI: 10.1016/j.ijthermalsci.2016.02.003
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    Publication Type: Journal Publications
  • Keywords:

    Condensed Matter Physics,Engineering (Miscellaneous),Engineering, Mechanical,Thermodynamics
    Plate heat exchanger
    Lithium nitrate
    Flow boiling
    Ammonia
    Absorption refrigeration
    Thermodynamics
    Matemática / probabilidade e estatística
    Interdisciplinar
    General engineering
    Engineering, mechanical
    Engineering (miscellaneous)
    Engineering (all)
    Engenharias iii
    Engenharias ii
    Engenharias i
    Condensed matter physics
    Ciências ambientais
    Astronomia / física
    Arquitetura e urbanismo
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