Articles producció científica> Enginyeria Química

Solar-driven absorption cycle for space heating and cooling

  • Datos identificativos

    Identificador: imarina:6389749
    Handle: http://hdl.handle.net/20.500.11797/imarina6389749
  • Autores:

    Vallès M
    Bourouis M
    Boer D
  • Otros:

    Autor según el artículo: Vallès M; Bourouis M; Boer D
    Departamento: Enginyeria Química
    Autor/es de la URV: Boer, Dieter-Thomas / Bourouis Chebata, Mahmoud / Vallès Rasquera, Joan Manel
    Palabras clave: Water Transformers Systems Solar heating and cooling Reversible absorption cycle Pump Pressure-drop Performance Nitrate Nh3/lino3 Ammonia-lithium nitrate Ammonia Absorption heat transformer Absorption cooling Absorber
    Resumen: © 2019 Elsevier Ltd The Energy Performance of Buildings Directive (EPBD) requires that all new buildings in the European Union be nearly zero energy buildings (NZEB) by the end of 2020. Consequently, energy saving measures must be introduced in the design phase. However, in most cases there will still be a cooling and heating demand, which could be satisfied using renewable energy. Of all of the renewable energy resources, solar energy has been given most attention since it is CO2 neutral. The present study investigates a new solar thermally-driven system that meets the heating and cooling demands of buildings. This system consists of a reversible absorption cycle, which operates as a single-effect absorption cycle in the cooling mode and as a heat transformer in the heating mode. The components of both cycles are the same, and only the flow direction inside the system changes. The working pair selected was ammonia-lithium nitrate so no rectifier is required and there are no problems of refrigerant freezing at low condensing temperatures when the cycle operates as a heat transformer. For both cycles, a mathematical model is developed to obtain feasible driving temperatures and evaluate the cycle's coefficient of performance (COP) depending on the ambient temperature. The results show that in the heating mode, the heat transformer cycle can be driven with a heat source at 40 °C to produce hot water at 55 °C at an ambient temperature of 0 °C and a COP of about 0.45. In addition, the lower the ambient temperature, the higher the hot water temperature that the heat transformer can produce. In the cooling mode, the single-effect absorption cycle can be driven with a heat source at 85 °C to produce chilled water at 7 °C at an ambient temperature of 30 °C and a COP of 0.6. As a result, this configuration overcomes the limitations of existing absorption cycles and presents an interesting alternative to existing heating and cooling systems.
    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
    ISSN: 13594311
    Direcció de correo del autor: manel.valles@urv.cat mahmoud.bourouis@urv.cat dieter.boer@urv.cat
    Identificador del autor: 0000-0002-0748-1287 0000-0003-2476-5967 0000-0002-5532-6409
    Fecha de alta del registro: 2023-07-31
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S1359431119351695
    URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Applied Thermal Engineering. 168 (114836): Article number 114836-
    Referencia de l'ítem segons les normes APA: Vallès M; Bourouis M; Boer D (2020). Solar-driven absorption cycle for space heating and cooling. Applied Thermal Engineering, 168(114836), Article number 114836-. DOI: 10.1016/j.applthermaleng.2019.114836
    DOI del artículo: 10.1016/j.applthermaleng.2019.114836
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2020
    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
    Water
    Transformers
    Systems
    Solar heating and cooling
    Reversible absorption cycle
    Pump
    Pressure-drop
    Performance
    Nitrate
    Nh3/lino3
    Ammonia-lithium nitrate
    Ammonia
    Absorption heat transformer
    Absorption cooling
    Absorber
    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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