Modified clay as thermal backfill material for buried electrical cables

被引：10

作者：

Suleiman, Bashir M. ^{[1
]}

Daoudi, Kais ^{[1
]}

Attaelmanan, Atta G. ^{[1
]}

Alzaylaie, Marwan ^{[2
]}

Gustavsson, Mattias ^{[3
]}

机构：

[1] Univ Sharjah, Coll Sci, Dept Appl Phys & Astron, Sharjah, U Arab Emirates

[2] Govt Dubai, Geotech, Dubai Dev Author, Dubai, U Arab Emirates

[3] Hot Disk AB, Sven Hultins Gata 9, SE-41288 Gothenburg, Sweden

来源：

THERMAL SCIENCE AND ENGINEERING PROGRESS | 2020年 / 19卷

关键词：

Thermal conductivity; Underground buried transmission lines; Transient Plane Source; Clay backfill; IEC; 287; U-value; CONDUCTIVITY;

D O I：

10.1016/j.tsep.2020.100589

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The power efficiency of underground cables is largely affected by the thermal conductivity of the surrounding (backfill) materials hosting the cables/tubes. We are investigating the possibility to enhance thermal conduction in Al-modified clay-bentonite to be used as backfill materials. The Transient Plane Source (TPS) technique is used to measure thermal conductivity. The measurements were performed on five dry samples at room temperature. They were done on an isotropic basis using different amounts of Al concentration (0%, 6%, 8%, 13%, and 25%) of the sample weight. The results showed an overall substantial relative increase in the thermal conductivity values from 0.25 W/m-K to 0.68 W/m-K, as the Al-content increased by 25%. The estimated average U-values of these samples were in the range from 0.40 to 1.1 W/m(2) K, which are directly proportional to the relative increase in the measured thermal conductivity.

引用

页数：4

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