Optimization of Geometric Parameters of Thermal Insulation of Pre-Insulated Double Pipes

Dorota Krawczyk , Tomasz Janusz Teleszewski


This paper presents the analysis of the heat conduction of pre-insulated double ducts and the optimization of the shape of thermal insulation by applying an elliptical shape. The shape of the cross-section of the thermal insulation is significantly affected by the thermal efficiency of double pre-insulated networks. The thickness of the insulation from the external side of the supply and return pipes affects the heat losses of the double pre-insulated pipes, while the distance between the supply and return pipes influences the heat flux exchanged between these ducts. An assumed elliptical shape with a ratio of the major axis to the minor half axis of an ellipse equaling 1.93 was compared to thermal circular insulation with the same cross-sectional area. All calculations were made using the boundary element method (BEM) using a proprietary computer program written in Fortran as part of the VIPSKILLS project.
Author Dorota Krawczyk (FCEE / HVAC)
Dorota Krawczyk,,
- Heating, Ventilation, Air Conditioning Department (HVAC Department)
, Tomasz Janusz Teleszewski (FCEE / HVAC)
Tomasz Janusz Teleszewski,,
- Heating, Ventilation, Air Conditioning Department (HVAC Department)
Journal seriesEnergies, ISSN 1996-1073, (N/A 140 pkt)
Issue year2019
Publication size in sheets0.5
Keywords in Englishthermal insulation; double heating ducts; twin pipes; energy savings; pollutants emission; district heating; network
ASJC Classification1700 General Computer Science
URL https://www.mdpi.com/1996-1073/12/6/1012
Internal identifierROC 19-20
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 12-02-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.156; WoS Impact Factor: 2018 = 2.707 (2) - 2018=2.99 (5)
Citation count*2 (2020-04-05)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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