Effect of the concentration ratio on energetic and exergetic performance of concentrating solar collectors with integrated transparent insulation materials

Julian D. Osorio, Alejandro Rivera-Alvarez, Juan C. Ordonez

Resultado de la investigación: Contribución a una revistaArtículoInvestigaciónrevisión exhaustiva

Resumen

The effect of the concentration ratio on the performance of parabolic trough and central receiver collectors with integrated transparent insulation materials (TIMs) is analyzed in this work. A model based on optical, energy, and exergy analyses is developed to determine thermal and second law efficiencies of concentrated solar collectors as a function of the absorber temperature and concentration ratio. The results are compared with the respective traditional collector configurations without TIM. In general, high concentration ratios are fundamental to maintain high efficiencies. The incorporation of a TIM into concentrated solar collectors leads to higher thermal efficiencies at high operating temperatures even at low concentration ratios. An equivalent second law efficiency to that of the reference collector configuration can be achieved at lower concentration ratios by incorporating a TIM in parabolic trough or a TIM and a glass envelope in central receiver collectors. The idea of using a TIM deserves further exploration as it seems to be a promising alternative that contributes to a more efficient and cost-effective technology.

Idioma originalInglés
Páginas (desde-hasta)58-70
Número de páginas13
PublicaciónSustainable Energy Technologies and Assessments
Volumen32
DOI
EstadoPublicada - 1 abr 2019

Huella dactilar

Solar collectors
Insulation
Exergy
Glass
Temperature
Costs

Palabras clave

    Citar esto

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    title = "Effect of the concentration ratio on energetic and exergetic performance of concentrating solar collectors with integrated transparent insulation materials",
    abstract = "The effect of the concentration ratio on the performance of parabolic trough and central receiver collectors with integrated transparent insulation materials (TIMs) is analyzed in this work. A model based on optical, energy, and exergy analyses is developed to determine thermal and second law efficiencies of concentrated solar collectors as a function of the absorber temperature and concentration ratio. The results are compared with the respective traditional collector configurations without TIM. In general, high concentration ratios are fundamental to maintain high efficiencies. The incorporation of a TIM into concentrated solar collectors leads to higher thermal efficiencies at high operating temperatures even at low concentration ratios. An equivalent second law efficiency to that of the reference collector configuration can be achieved at lower concentration ratios by incorporating a TIM in parabolic trough or a TIM and a glass envelope in central receiver collectors. The idea of using a TIM deserves further exploration as it seems to be a promising alternative that contributes to a more efficient and cost-effective technology.",
    keywords = "Concentrated solar collectors, Concentration ratio (C), Second law efficiency, Thermal efficiency, Thermal losses, Transparent Insulation Material (TIM)",
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    Effect of the concentration ratio on energetic and exergetic performance of concentrating solar collectors with integrated transparent insulation materials. / Osorio, Julian D.; Rivera-Alvarez, Alejandro; Ordonez, Juan C.

    En: Sustainable Energy Technologies and Assessments, Vol. 32, 01.04.2019, p. 58-70.

    Resultado de la investigación: Contribución a una revistaArtículoInvestigaciónrevisión exhaustiva

    TY - JOUR

    T1 - Effect of the concentration ratio on energetic and exergetic performance of concentrating solar collectors with integrated transparent insulation materials

    AU - Osorio, Julian D.

    AU - Rivera-Alvarez, Alejandro

    AU - Ordonez, Juan C.

    PY - 2019/4/1

    Y1 - 2019/4/1

    N2 - The effect of the concentration ratio on the performance of parabolic trough and central receiver collectors with integrated transparent insulation materials (TIMs) is analyzed in this work. A model based on optical, energy, and exergy analyses is developed to determine thermal and second law efficiencies of concentrated solar collectors as a function of the absorber temperature and concentration ratio. The results are compared with the respective traditional collector configurations without TIM. In general, high concentration ratios are fundamental to maintain high efficiencies. The incorporation of a TIM into concentrated solar collectors leads to higher thermal efficiencies at high operating temperatures even at low concentration ratios. An equivalent second law efficiency to that of the reference collector configuration can be achieved at lower concentration ratios by incorporating a TIM in parabolic trough or a TIM and a glass envelope in central receiver collectors. The idea of using a TIM deserves further exploration as it seems to be a promising alternative that contributes to a more efficient and cost-effective technology.

    AB - The effect of the concentration ratio on the performance of parabolic trough and central receiver collectors with integrated transparent insulation materials (TIMs) is analyzed in this work. A model based on optical, energy, and exergy analyses is developed to determine thermal and second law efficiencies of concentrated solar collectors as a function of the absorber temperature and concentration ratio. The results are compared with the respective traditional collector configurations without TIM. In general, high concentration ratios are fundamental to maintain high efficiencies. The incorporation of a TIM into concentrated solar collectors leads to higher thermal efficiencies at high operating temperatures even at low concentration ratios. An equivalent second law efficiency to that of the reference collector configuration can be achieved at lower concentration ratios by incorporating a TIM in parabolic trough or a TIM and a glass envelope in central receiver collectors. The idea of using a TIM deserves further exploration as it seems to be a promising alternative that contributes to a more efficient and cost-effective technology.

    KW - Concentrated solar collectors

    KW - Concentration ratio (C)

    KW - Second law efficiency

    KW - Thermal efficiency

    KW - Thermal losses

    KW - Transparent Insulation Material (TIM)

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    U2 - 10.1016/j.seta.2019.01.005

    DO - 10.1016/j.seta.2019.01.005

    M3 - Artículo

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    EP - 70

    JO - Sustainable Energy Technologies and Assessments

    JF - Sustainable Energy Technologies and Assessments

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