Improvement of thermal characteristics of latent heat thermal energy storage units using carbon-fiber brushes: experiments and modeling

Brushes made of carbon fibers with a high thermal conductivity are inserted on the shell side of a heat exchanger to enhance the conductive heat transfer rates in phase change materials. The experimental results show that the brushes essentially improve the heat exchange rate during the charge and d...

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Bibliographic Details
Published inInternational journal of heat and mass transfer Vol. 46; no. 23; pp. 4513 - 4525
Main Authors Fukai, Jun, Hamada, Yuichi, Morozumi, Yoshio, Miyatake, Osamu
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.11.2003
Elsevier
Subjects
Applied sciences
Carbon fiber
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat exchanger
Thermal conductivity enhancement
Thermal energy storage
Transport and storage of energy
Thermal energy storage
Thermal conductivity enhancement
Heat exchanger
Carbon fiber
Thermal conductivity
Heat transfer coefficient
Latent heat storage
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Summary:Brushes made of carbon fibers with a high thermal conductivity are inserted on the shell side of a heat exchanger to enhance the conductive heat transfer rates in phase change materials. The experimental results show that the brushes essentially improve the heat exchange rate during the charge and discharge processes even when the volume fractions of the fibers are about one percent. A three-dimensional model describing the heat transfer in the heat exchanger is numerically solved. The model predicts well the experimental outlet fluid temperatures and the local temperatures in the composite.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0017-9310
1879-2189
DOI:10.1016/S0017-9310(03)00290-4