Articles producció científica> Enginyeria Mecànica

Performance analysis of a triple-effect absorption cooling cycle using aqueous (lithium, potassium, sodium) nitrate solution as a working pair

  • Identification data

    Identifier: imarina:5128534
  • Authors:

    Alvarez, Maria E.
    Esteve, Xavier
    Bourouis, Mahmoud
  • Others:

    Author, as appears in the article.: Alvarez, Maria E.; Esteve, Xavier; Bourouis, Mahmoud
    Department: Enginyeria Mecànica
    URV's Author/s: Bourouis Chebata, Mahmoud
    Keywords: Triple-effect absorption cycle High-temperature heat sources Aqueous nitrate solution Alkitrate
    Abstract: A triple-effect absorption cooling cycle using aqueous (lithium, potassium, sodium) nitrate solution (Alkitrate) as a working fluid in the high temperature stage is simulated in this work. This cycle takes advantage of the thermal potential of high temperature heat sources and has a configuration consisting of a H2O/LiBr double-effect cycle coupled with a single-effect cycle that uses Alkitrate as a working fluid. Heat is exchanged between the two cycles by thermal fluids which flow in the external circuits. The conventional working fluid H2O/LiBr suffers from serious problems of corrosion and thermal decomposition at temperatures of over 180 °C, which restricts its use in the high temperature components of a triple-effect absorption cooling cycle. At the nominal operating conditions selected, namely a heat source temperature TH of 250 °C and a cooling-water temperature TC of 30 °C the coefficient of performance achieved with the Alkitrate topping cycle is 1.73. The correct operation of the cycle is demonstrated by drawing the cycle in the Dühring diagram, where the safety margin for the crystallization of the working fluid is adhered to. Results show that the Alkitrate triple-effect cycle has a slightly higher efficiency as compared to the H2O/LiBr triple-effect cycle at generator temperatures of over 180 °C. Moreover, the practical operation of a H2O/LiBr triple-effect cycle at temperatures higher than 180 °C suffers from the above mentioned problems related to the thermal stability and corrosion of the working pair.
    Thematic Areas: Thermodynamics Química Medicina iii Mechanics Mechanical engineering Materiais Matemática / probabilidade e estatística Interdisciplinar Industrial and manufacturing engineering Fluid flow and transfer processes Engineering, mechanical Engenharias iv Engenharias iii Engenharias ii Engenharias i Energy engineering and power technology Energy & fuels Ciências biológicas ii Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Biodiversidade Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: mahmoud.bourouis@urv.cat
    Author identifier: 0000-0003-2476-5967
    Record's date: 2024-07-20
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S1359431115000150
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Applied Thermal Engineering. 79 27-36
    APA: Alvarez, Maria E.; Esteve, Xavier; Bourouis, Mahmoud (2015). Performance analysis of a triple-effect absorption cooling cycle using aqueous (lithium, potassium, sodium) nitrate solution as a working pair. Applied Thermal Engineering, 79(), 27-36. DOI: 10.1016/j.applthermaleng.2015.01.011
    Article's DOI: 10.1016/j.applthermaleng.2015.01.011
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2015
    Publication Type: Journal Publications
  • Keywords:

    Energy & Fuels,Energy Engineering and Power Technology,Engineering, Mechanical,Fluid Flow and Transfer Processes,Industrial and Manufacturing Engineering,Mechanical Engineering,Mechanics,Thermodynamics
    Triple-effect absorption cycle
    High-temperature heat sources
    Aqueous nitrate solution
    Alkitrate
    Thermodynamics
    Química
    Medicina iii
    Mechanics
    Mechanical engineering
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    Industrial and manufacturing engineering
    Fluid flow and transfer processes
    Engineering, mechanical
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Energy engineering and power technology
    Energy & fuels
    Ciências biológicas ii
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Biodiversidade
    Astronomia / física
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