Effects of wall properties on temperature-control effectiveness of heating section in a thermosiphon containing PCM suspensions

Ching Jenq Ho; Shih Ming Lin; Rong Horng Chen; Chi Ming Lai

doi:10.3390/APP10186211

Effects of wall properties on temperature-control effectiveness of heating section in a thermosiphon containing PCM suspensions

Ching Jenq Ho, Shih Ming Lin, Rong Horng Chen, Chi Ming Lai

Research output: Contribution to journal › Article › peer-review

Abstract

This article considers the problem of natural heat transfer in a rectangular thermosiphon to investigate the effects of wall properties (thickness and thermal conductivity) on the heat-transfer characteristics of phase-change-material (PCM) suspension flow. The following parameter ranges were investigated: dimensionless loop-wall thickness, 0-0.5; wall-to-fluid thermal-conductivity ratio, 0.1-100; modified Rayleigh number, 1010-1011; and volumetric fraction of PCM particles, 0-10%. From numerical simulations via the finite-volume approach, it was found that using a pipe with appropriate wall thickness and thermal conductivity containing PCM suspensions for the heating section of a rectangular thermosiphon can effectively control the maximal temperature.

Original language	English
Article number	6211
Journal	Applied Sciences (Switzerland)
Volume	10
Issue number	18
DOIs	https://doi.org/10.3390/APP10186211
Publication status	Published - 2020 Sep

All Science Journal Classification (ASJC) codes

Materials Science(all)
Instrumentation
Engineering(all)
Process Chemistry and Technology
Computer Science Applications
Fluid Flow and Transfer Processes

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10.3390/APP10186211

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title = "Effects of wall properties on temperature-control effectiveness of heating section in a thermosiphon containing PCM suspensions",

abstract = "This article considers the problem of natural heat transfer in a rectangular thermosiphon to investigate the effects of wall properties (thickness and thermal conductivity) on the heat-transfer characteristics of phase-change-material (PCM) suspension flow. The following parameter ranges were investigated: dimensionless loop-wall thickness, 0-0.5; wall-to-fluid thermal-conductivity ratio, 0.1-100; modified Rayleigh number, 1010-1011; and volumetric fraction of PCM particles, 0-10%. From numerical simulations via the finite-volume approach, it was found that using a pipe with appropriate wall thickness and thermal conductivity containing PCM suspensions for the heating section of a rectangular thermosiphon can effectively control the maximal temperature.",

author = "Ho, {Ching Jenq} and Lin, {Shih Ming} and Chen, {Rong Horng} and Lai, {Chi Ming}",

note = "Funding Information: Funding: This study is supported by the Ministry of Sciences and Technologies (MOST) of ROC in Taiwan through project no. NSC94-2212-E006-015. Publisher Copyright: {\textcopyright} 2020 by the authors.",

year = "2020",

month = sep,

doi = "10.3390/APP10186211",

language = "English",

volume = "10",

journal = "Applied Sciences (Switzerland)",

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AU - Ho, Ching Jenq

AU - Lin, Shih Ming

AU - Chen, Rong Horng

AU - Lai, Chi Ming

N1 - Funding Information: Funding: This study is supported by the Ministry of Sciences and Technologies (MOST) of ROC in Taiwan through project no. NSC94-2212-E006-015. Publisher Copyright: © 2020 by the authors.

PY - 2020/9

Y1 - 2020/9

N2 - This article considers the problem of natural heat transfer in a rectangular thermosiphon to investigate the effects of wall properties (thickness and thermal conductivity) on the heat-transfer characteristics of phase-change-material (PCM) suspension flow. The following parameter ranges were investigated: dimensionless loop-wall thickness, 0-0.5; wall-to-fluid thermal-conductivity ratio, 0.1-100; modified Rayleigh number, 1010-1011; and volumetric fraction of PCM particles, 0-10%. From numerical simulations via the finite-volume approach, it was found that using a pipe with appropriate wall thickness and thermal conductivity containing PCM suspensions for the heating section of a rectangular thermosiphon can effectively control the maximal temperature.

AB - This article considers the problem of natural heat transfer in a rectangular thermosiphon to investigate the effects of wall properties (thickness and thermal conductivity) on the heat-transfer characteristics of phase-change-material (PCM) suspension flow. The following parameter ranges were investigated: dimensionless loop-wall thickness, 0-0.5; wall-to-fluid thermal-conductivity ratio, 0.1-100; modified Rayleigh number, 1010-1011; and volumetric fraction of PCM particles, 0-10%. From numerical simulations via the finite-volume approach, it was found that using a pipe with appropriate wall thickness and thermal conductivity containing PCM suspensions for the heating section of a rectangular thermosiphon can effectively control the maximal temperature.

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Effects of wall properties on temperature-control effectiveness of heating section in a thermosiphon containing PCM suspensions

Abstract

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