Performance of a latent thermal energy storage tank fitted with carbon-fiber cloths to expand the heat transfer area

Koichi Nakaso, Seiichi Nogami, Hirofumi Teshima, Yasutoshi Inatomi, Kunihiko Kitamura, Jun Fukai

Research output: Contribution to journalArticle

Abstract

Carbon-fiber cloths were installed in a latent heat thermal energy storage (LHTES) tank to expand the heat transfer area, and the characteristics of the energy charge and discharge processes were compared with the results for carbon-fiber brushes previously reported. In the charge process, carbon-fiber cloths with a volume of 0.27% of the tank volume exhibited better thermal performance than carbon-fiber brushes with a volume of 1.3%. In the discharge process, their thermal performances were the same. The thermal performance of the cloths was accordingly superior to the brushes. When the discharge characteristics were evaluated in terms of the overall fin efficiency, that of carbon-fiber cloths under the present conditions was twice as high as that without carbon fibers. An increase in volume fraction of carbon fibers resulted in higher efficiency, which reached 0.9 only at 1 vol.% of carbon fibers.

Original languageEnglish
Pages (from-to)414-419
Number of pages6
JournalKAGAKU KOGAKU RONBUNSHU
Volume32
Issue number5
DOIs
Publication statusPublished - Oct 31 2006
Externally publishedYes

Keywords

  • Carbon-fiber
  • Heat transfer enhancement
  • Latent heat
  • Thermal energy storage

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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