Thermal Conductivity Characteristics of Thermal Insulation Materials Immersed in Water for Cold-Region Tunnels
Joint Authors
Li, Youyun
Duan, Limin
Sun, Yongmei
Zhuang, Yuan
Xie, Ke
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-04-09
Country of Publication
Egypt
No. of Pages
15
Abstract EN
This study investigates the distribution of pore water on the basis of the measured mass moisture content after soaking the tunnel insulation material.
This study also analyzes the influence of the distribution of pore water on the thermal conductivity of the material on the basis of this mass moisture content.
Scanning images of phenolic and polyurethane insulation boards are obtained by computer tomography (CT).
The gray volume moisture content (Gv) is deduced based on the CT scanning images, to determine the distribution of pore water (Gv is the ratio of the volume of the water sample (represented by the gray value) to the volume of the saturated water sample (represented by the gray value) which is the gray volume moisture content of the sample).
The correlation between gray volume moisture content and mass moisture content is determined by comparing different algorithms of gray volume moisture content and volume moisture content.
The relationship between mass moisture content and thermal conductivity can be determined using a self-made quasi-steady-state tester, whereas the relationship between gray volume moisture content and thermal conductivity can be derived indirectly.
Related experimental research can predict the thermal conductivity of thermal insulation materials by using a new perspective and shows the influence of pore water distribution on the thermal conductivity of materials.
American Psychological Association (APA)
Li, Youyun& Sun, Yongmei& Zhuang, Yuan& Duan, Limin& Xie, Ke. 2020. Thermal Conductivity Characteristics of Thermal Insulation Materials Immersed in Water for Cold-Region Tunnels. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1129581
Modern Language Association (MLA)
Li, Youyun…[et al.]. Thermal Conductivity Characteristics of Thermal Insulation Materials Immersed in Water for Cold-Region Tunnels. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1129581
American Medical Association (AMA)
Li, Youyun& Sun, Yongmei& Zhuang, Yuan& Duan, Limin& Xie, Ke. Thermal Conductivity Characteristics of Thermal Insulation Materials Immersed in Water for Cold-Region Tunnels. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1129581
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1129581