Optimization of Geometric Parameters of Thermal Insulation of Pre-Insulated Double Pipes
Dorota Krawczyk , Tomasz Janusz Teleszewski
AbstractThis 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.
|Journal series||Energies, ISSN 1996-1073, (N/A 140 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||thermal insulation; double heating ducts; twin pipes; energy savings; pollutants emission; district heating; network|
|Internal identifier||ROC 19-20|
|License||Journal (articles only); author's original; ; after publication|
|Score||= 140.0, 12-02-2020, ArticleFromJournal|
|Publication indicators||: 2018 = 1.156; : 2018 = 2.707 (2) - 2018=2.99 (5)|
|Citation count*||2 (2020-04-05)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.