Thermal Conductivity in Soil: Theoretical Approach by 3D Infinite Resistance Grid Model

8th International Conference on Future Environment and Energy

生态环境科学;能源学

Changjan, A.^1 ; Intaravicha, N.^1

Department of Environmental Science and Technology, Faculty of Science and Technology, Pathumwan Institute of Technology, 833 Rama 1 Road, Wangmai, Pathumwan, Bangkok

10330, Thailand^1

关键词: Analytical forms;    Electrical resistances;    Fourier's law;    Rate of cooling;    Real situation;    Theoretical approach;    Three dimensions;    Transmission and distribution systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/150/1/012006/pdf
DOI  :  10.1088/1755-1315/150/1/012006

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Thermal conductivity in soil was elementary characteristic of soil that conduct heat, measured in terms of Fourier's Law for heat conduction and useful application in many fields: such as Utilizing underground cable for transmission and distribution systems, the rate of cooling of the cable depends on the thermal properties of the soil surrounding the cable. In this paper, we investigated thermal conductivity in soil by infinite three dimensions (3D) electrical resistance circuit concept. Infinite resistance grid 3D was the grid of resistors that extends to infinity in all directions. Model of thermal conductivity in soil of this research was generated from this concept: comparison between electrical resistance and thermal resistance in soil. Finally, we investigated the analytical form of thermal conductivity in soil which helpful for engineering and science students that could exhibit education with a principle of physics that applied to real situations.