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Effects of hot-water-pipeline renovation in a district heating system
Ljubenko, Andrej (Author), Poredoš, Alojz (Author), Zager, Miran (Author)

URLURL - Presentation file, Visit http://www.dlib.si/details/URN:NBN:SI:doc-BDXVKVCL This link opens in a new window

Abstract
In this paper the attention is on the heat losses of a main, aboveground supply, hot-water pipeline, whose length is 5430 m. It is situated between the Šoštanj Thermal Power Plant (TEŠ) and the Central Energy Station (CES) Velenje as part of the district heating system in the Šaleška Valley. It was renovated because major heat losses were identified. A numerical analysis and a comparison between the temperature fields of the pipe's insulation before and after the renovation was performed to discover the main causes for the high heat losses before renovation. An integral measuring method for determining the heat losses was adapted and used to determine the pipeline's heat losses after the renovation. Taking into consideration the real operating parameters, the annual energy savings and the consequent operational cost reduction, due to the lower heat losses, resulting from the pipeline renovations, are presented. The calculation is made with measured heat-loss coefficients and is therefore based on the real state of the pipeline. The aim is to show the necessity to investigate the heat losses of a hot-water pipeline whose design or state of insulation is questionable.

Language:English
Keywords:daljinsko ogrevanje, sanacija vročevoda, toplotne izgube, toplotni mostovi, district heating, heat losses, pipeline renovation, thermal bridges
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2011
Publisher:= Association of Mechanical Engineers and Technicians of Slovenia et al.
Number of pages:str. 834-842
Numbering:Vol. 57, no. 11
UDC:697.3
ISSN on article:0039-2480
DOI:10.5545/sv-jme.2010.227 Link is opened in a new window
COBISS.SI-ID:12069659 Link is opened in a new window
Views:589
Downloads:200
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [et al.], = Association of Mechanical Engineers and Technicians of Slovenia [et al.]
ISSN:0039-2480
COBISS.SI-ID:762116 This link opens in a new window

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