Articles producció científica> Enginyeria Mecànica

Analysis of ammonia/water and ammonia/salt mixture absorption cycles for refrigeration purposes in fishing ships

  • Datos identificativos

    Identificador: imarina:5128697
    Autores:
    Taboas, FranciscoBourouis, MahmoudValles, Manel
    Resumen:
    In this work, the use of waste heat energy of jacket water in diesel engines of fishing ships was analysed for use as a heat source for absorption refrigeration systems. The thermodynamic simulation of an absorption refrigeration cycle with three different working fluid mixtures that use ammonia as a refrigerant was carried out. This analysis was assessed in terms of the cooling demand and cycle performance as a function of the evaporator, condenser and generator temperatures. Moreover, the need for rectifying the vapour stream leaving the generator was analysed together with the drag of the fraction of non-evaporated liquid to the absorber. The results show that the NH3/(LiNO3 + H2O) and NH3/LiNO3 fluid mixtures have higher values of COP as compared to NH3/H2O fluid mixture, the differences being more pronounced at low generation temperatures. If the activation temperature is set to 85 °C, the minimum evaporation temperatures that can be achieved are −18.8 °C for the cycle with NH3/LiNO3, −17.5 °C for the cycle with NH3/(LiNO3 + H2O) cycle and −13.7 °C for the NH3/H2O cycle at a condensing temperature of 25 °C. Also, for the NH3/(LiNO3 + H2O) fluid mixture, it has been demonstrated that the absorption refrigeration cycle can be operated without a distillation column and in this case the water content in the refrigerant stream entering the evaporator is less than 1.5% in weight at the operating conditions selected.
  • Otros:

    Autor según el artículo: Taboas, Francisco; Bourouis, Mahmoud; Valles, Manel
    Departamento: Enginyeria Mecànica
    Autor/es de la URV: Bourouis Chebata, Mahmoud / Vallès Rasquera, Joan Manel
    Palabras clave: Waste heat Lithium nitrate Fishing ship Ammonia Absorption refrigeration
    Resumen: In this work, the use of waste heat energy of jacket water in diesel engines of fishing ships was analysed for use as a heat source for absorption refrigeration systems. The thermodynamic simulation of an absorption refrigeration cycle with three different working fluid mixtures that use ammonia as a refrigerant was carried out. This analysis was assessed in terms of the cooling demand and cycle performance as a function of the evaporator, condenser and generator temperatures. Moreover, the need for rectifying the vapour stream leaving the generator was analysed together with the drag of the fraction of non-evaporated liquid to the absorber. The results show that the NH3/(LiNO3 + H2O) and NH3/LiNO3 fluid mixtures have higher values of COP as compared to NH3/H2O fluid mixture, the differences being more pronounced at low generation temperatures. If the activation temperature is set to 85 °C, the minimum evaporation temperatures that can be achieved are −18.8 °C for the cycle with NH3/LiNO3, −17.5 °C for the cycle with NH3/(LiNO3 + H2O) cycle and −13.7 °C for the NH3/H2O cycle at a condensing temperature of 25 °C. Also, for the NH3/(LiNO3 + H2O) fluid mixture, it has been demonstrated that the absorption refrigeration cycle can be operated without a distillation column and in this case the water content in the refrigerant stream entering the evaporator is less than 1.5% in weight at the operating conditions selected.
    Áreas temáticas: 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
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: mahmoud.bourouis@urv.cat manel.valles@urv.cat
    Identificador del autor: 0000-0003-2476-5967 0000-0002-0748-1287
    Fecha de alta del registro: 2024-09-07
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S1359431114001574?via%3Dihub
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Applied Thermal Engineering. 66 (1-2): 603-611
    Referencia de l'ítem segons les normes APA: Taboas, Francisco; Bourouis, Mahmoud; Valles, Manel (2014). Analysis of ammonia/water and ammonia/salt mixture absorption cycles for refrigeration purposes in fishing ships. Applied Thermal Engineering, 66(1-2), 603-611. DOI: 10.1016/j.applthermaleng.2014.02.065
    DOI del artículo: 10.1016/j.applthermaleng.2014.02.065
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2014
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Energy & Fuels,Energy Engineering and Power Technology,Engineering, Mechanical,Fluid Flow and Transfer Processes,Industrial and Manufacturing Engineering,Mechanical Engineering,Mechanics,Thermodynamics
    Waste heat
    Lithium nitrate
    Fishing ship
    Ammonia
    Absorption refrigeration
    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
  • Documentos:

  • Cerca a google

    Search to google scholar