THERMAL SCIENCE

International Scientific Journal

Ferdinado Salata

,

Andrea De Lieto Vollaro

,

Roberto De Lieto Vollaro

A MODEL FOR THE EVALUATION OF HEAT LOSS FROM UNDERGROUND CABLES IN NON-UNIFORM SOIL TO OPTIMIZE THE SYSTEM DESIGN

ABSTRACT
With the proliferation of technologies and underground systems, analysis of thermal fields in soil has become a topic of great interest in the developing technology of buried structures. In this work, we have investigated the steady state temperature field (from linear heat sources - buried cable -) in a different type of soil and excavation geometry. In a laboratory, a physical model was built on scale, which reproduces an "undisturbed" area containing a linear thermal source. This scale model was produced for experimental activity. A measuring chain was made to analyze the thermal field in various types of soils, by varying the electrical current through the line source. The physical model was recreated using a finite volume calculation software. Analysis of the different field system configurations were completed and we have studied a model for the improvement of the design method.
KEYWORDS
dry soil, buried cable, FEM model, electrical current, linear thermal source, design method, excavation geometry
PAPER SUBMITTED: 2012-05-28
PAPER REVISED: 2013-09-01
PAPER ACCEPTED: 2013-09-05
PUBLISHED ONLINE: 2013-09-22
DOI REFERENCE: https://doi.org/10.2298/TSCI120528119S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2015, VOLUME 19, ISSUE Issue 2, PAGES [461 - 474]
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A model for the evaluation of heat loss from underground cables in non-uniform soil to optimize the system design

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence