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Effects of the Wall Properties on the Cooling Efficiency in a Thermosyphon Containing PCM Suspensions.

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Title: Effects of the Wall Properties on the Cooling Efficiency in a Thermosyphon Containing PCM Suspensions.
Authors: Ho, Ching-Jenq1 (AUTHOR) cjho@mail.ncku.edu.tw, Lin, Shih-Ming1 (AUTHOR), Lai, Chi-Ming2 (AUTHOR) cjho@mail.ncku.edu.tw
Source: Energies (19961073). Feb2021, Vol. 14 Issue 3, p572. 1p.
Subject Terms: *Phase change materials, *Heat transfer, *Thermal conductivity, *Rayleigh number
Abstract: This study explores the effects of pipe wall properties (thermal conductivity k and wall thickness tw) on the heat transfer performance of a rectangular thermosyphon with a phase change material (PCM) suspension and a geometric configuration (aspect ratio = 1; dimensionless heating section length = 0.8; dimensionless relative elevation between the cooling and the heating sections = 2) that ensures the optimum heat transfer efficiency in the cooling section. The following parameter ranges are studied: the dimensionless loop wall thickness (0 to 0.5), wall-to-fluid thermal conductivity ratio (0.1 to 100), modified Rayleigh number (1010 to 1011), and volumetric fraction of PCM particles (0 to 10%). The results show that appropriate selection of k and tw can lead to improved heat transfer effectiveness in the cooling section of the PCM suspension-containing rectangular thermosyphon. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 148549107
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Effects of the Wall Properties on the Cooling Efficiency in a Thermosyphon Containing PCM Suspensions.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Ho%2C+Ching-Jenq%22">Ho, Ching-Jenq</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> cjho@mail.ncku.edu.tw</i><br /><searchLink fieldCode="AR" term="%22Lin%2C+Shih-Ming%22">Lin, Shih-Ming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lai%2C+Chi-Ming%22">Lai, Chi-Ming</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> cjho@mail.ncku.edu.tw</i>
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Feb2021, Vol. 14 Issue 3, p572. 1p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Phase+change+materials%22">Phase change materials</searchLink><br />*<searchLink fieldCode="DE" term="%22Heat+transfer%22">Heat transfer</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br />*<searchLink fieldCode="DE" term="%22Rayleigh+number%22">Rayleigh number</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study explores the effects of pipe wall properties (thermal conductivity k and wall thickness tw) on the heat transfer performance of a rectangular thermosyphon with a phase change material (PCM) suspension and a geometric configuration (aspect ratio = 1; dimensionless heating section length = 0.8; dimensionless relative elevation between the cooling and the heating sections = 2) that ensures the optimum heat transfer efficiency in the cooling section. The following parameter ranges are studied: the dimensionless loop wall thickness (0 to 0.5), wall-to-fluid thermal conductivity ratio (0.1 to 100), modified Rayleigh number (1010 to 1011), and volumetric fraction of PCM particles (0 to 10%). The results show that appropriate selection of k and tw can lead to improved heat transfer effectiveness in the cooling section of the PCM suspension-containing rectangular thermosyphon. [ABSTRACT FROM AUTHOR]
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        Value: 10.3390/en14030572
    Languages:
      – Code: eng
        Text: English
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        StartPage: 572
    Subjects:
      – SubjectFull: Phase change materials
        Type: general
      – SubjectFull: Heat transfer
        Type: general
      – SubjectFull: Thermal conductivity
        Type: general
      – SubjectFull: Rayleigh number
        Type: general
    Titles:
      – TitleFull: Effects of the Wall Properties on the Cooling Efficiency in a Thermosyphon Containing PCM Suspensions.
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            NameFull: Ho, Ching-Jenq
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            NameFull: Lin, Shih-Ming
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            NameFull: Lai, Chi-Ming
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              Text: Feb2021
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              Y: 2021
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            – TitleFull: Energies (19961073)
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