神戸大学附属図書館デジタルアーカイブ
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https://hdl.handle.net/20.500.14094/90005051
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2024-04-20
15:28 集計
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90005051 (fulltext)
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メタデータID
90005051
アクセス権
open access
出版タイプ
Accepted Manuscript
タイトル
Ammonium alum hydrate slurries with surfactants and polyvinyl alcohol as a latent heat transportation material for high temperature
著者
Hidema, Ruri ; Tano, Takuya ; Sato, Hideki ; Komoda, Yoshiyuki ; Suzuki, Hiroshi
著者ID
A1328
研究者ID
1000020598172
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=3137ec83db1b2137520e17560c007669
著者名
Hidema, Ruri
日出間, るり
ヒデマ, ルリ
所属機関名
工学研究科
著者名
Tano, Takuya
著者名
Sato, Hideki
著者ID
A0951
研究者ID
1000000397796
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=753b87abdd0a304b520e17560c007669
著者名
Komoda, Yoshiyuki
菰田, 悦之
コモダ, ヨシユキ
所属機関名
工学研究科
著者ID
A0404
研究者ID
1000090206524
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=434c12acc081aabd520e17560c007669
著者名
Suzuki, Hiroshi
鈴木, 洋
スズキ, ヒロシ
所属機関名
工学研究科
収録物名
International Journal of Heat and Mass Transfer
巻(号)
124
ページ
1334-1346
出版者
Elsevier
刊行日
2018-09
公開日
2020-10-01
抄録
Ammonium alum hydrate is a promising material for a latent heat transportation system for higher temperature around 50°C. However, there were two big problems to be solved. One is a low fluidity of the slurries due to increasing the viscosity; the other is a sedimentation of phase changed ammonium alum hydrate particles in the slurry due to high density of the particle, which causes pipe blockage. In this study, in order to solve these problems, we added drag reducing surfactants and polyvinyl alcohol (PVA) to the ammonium alum hydrate solution, and investigated the effects of them. Particle growth and sedimentation of ammonium alum in the solution were prohibited by adding both surfactants and PVA. Addition of only PVA to ammonium alum solution didn't prevent the particle growth and the sedimentation. That is, the effect was a synergetic effect. In order to understand the synergetic effect, inner structures of a solution containing surfactants and PVA were measured by a dynamic light scattering (DLS). Flow and heat transfer characteristics were also measured and analyzed. Friction coefficients of solutions and slurries were decreased with the drag reducing surfactants, which was not affected by addition of PVA. Heat transfer characteristics of ammonium alum hydrate slurries were higher than that of solution with surfactants and PVA. All the results confirmed the applicability of the ammonium alum hydrate slurries for the high temperature latent heat transportation systems.
キーワード
Latent heat transportation
Hydrate slurry
Two-phase/multiphase flow
Particle sedimentation
Drag-reducing agents
カテゴリ
工学研究科
学術雑誌論文
権利
© 2018 Elsevier.
This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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資源タイプ
journal article
言語
English (英語)
ISSN
0017-9310
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eISSN
1879-2189
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関連情報
DOI
https://doi.org/10.1016/j.ijheatmasstransfer.2018.04.030
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