Analysis of heat transfer in ordered and disordered mesoporous TiO2 films by finite element analysis

Title
Analysis of heat transfer in ordered and disordered mesoporous TiO2 films by finite element analysis
Authors
Tae-Jung HaSin-Young JungJun-Hyun BaeHong-Lim Lee장호원윤석진Sangwoo ShinHyung Hee ChoHyung-Ho Park
Keywords
Mesoporous TiO2 film; Pore structure; Heat transfer simulation; Finite element analysis
Issue Date
2011-07
Publisher
Microporous and mesoporous materials
Citation
VOL 144, 191-194
Abstract
Ordered mesoporous oxide films have lower thermal conductivities than their corresponding dense films. In order to apply ordered mesoporous oxide films, which possess excellent properties, in various fields, it is necessary to determine their thermal insulation mechanism. In this study, we synthesized ordered and disordered mesoporous TiO2 films as a function of the drying time. While they had similar porosities, they had different pore structures and thermal conductivities. In order to reveal the relationship between the pore structure and thermal conductivity, a simulation of the heat transfer was performed. The thermal properties, temperature distribution, and heat flux vector of the mesoporous films were simulated by finite element analysis. From the comparison of the experimental and simulated results, the mechanism of thermal insulation in the pore structure could be demonstrated.
URI
http://pubs.kist.re.kr/handle/201004/40037
ISSN
1387-1811
Appears in Collections:
KIST Publication > Article
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