Fundamentals of the Thermal Analysis of Complex Arrangements of Underground Heat Sources

Heiner Brakelmann, George J. Anders and Piotr Zajac
Additional contact information
Heiner Brakelmann: Faculty for Engineering Sciences, Institute for Energy-Transport and Storage (ETS), and Head of BCC Cable Consulting, University of Duisburg-Essen, D47495 Rheinberg, Germany
George J. Anders: Faculty of Electrotechnics, Electronics and Automation, Lodz University of Technology, 90-924 Lodz, Poland
Piotr Zajac: Faculty of Electrotechnics, Electronics and Automation, Lodz University of Technology, 90-924 Lodz, Poland

Energies, 2021, vol. 14, issue 20, 1-17

Abstract: This paper introduces a new analytical method for the 3-dimensional analysis of heat sources installed underground. Such sources include primarily electric power cables and steam pipes in urban areas. For complex arrangements of the heat sources, the heat transfer and cable rating calculations require the application of numerical methods, which call for high level of expertise and are generally difficult to use. The computational algorithm presented in this paper uses a point sources approach and is an extension of the work published by the authors based on line source modeling, with the goal of simplifying the numerical calculations. The proposed approach is applicable for all heat sources, which are directly buried in a uniform or a partially dried out soil. The method is illustrated by several numerical examples. These examples are used for comparison with the existing standard approach.

Keywords: underground heat sources; power cables; ampacity calculations; 3-dimensional analysis; complex laying conditions; cable rating (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/20/6813/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/20/6813/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:20:p:6813-:d:659226

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().