Performance analysis of a district heating system
ID Ljubenko, Andrej (Author), ID Poredoš, Alojz (Author), ID Morosuk, Tatiana (Author), ID Tsatsaronis, George (Author)

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Lowering the exergy content of heat required for heating purposes decreases the primary energy consumption. District heating systems are often an important link between facilities that generate heat with low exergy content and consumers. Exergetic efficiency of heat distribution is an important performance criterion in heat supply to consumers. It can serve as a criterion for optimization, towards a more sustainable distribution-network design and operation. This paper presents a methodology for an exergy-based distribution-network analysis in a district heating system. Criteria for performance evaluations are defined. They can be used to evaluate heat supply to different points in the network, or individual system components. A case study is performed on an existing district heating system. Energetic and exergetic efficiencies of supply lines are analyzed. Exergy destructions and exergy losses are studied. Large differences in efficiency of heat supply to different points in the network are discovered. Over-dimensioned parameters of the distribution network are investigated.

Keywords:district heating systems, distribution network, energy, exergy, efficiency
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Version of Record
Number of pages:Str. 1298-1313
Numbering:Vol. 6, iss. 3
PID:20.500.12556/RUL-129503 This link opens in a new window
ISSN on article:1996-1073
DOI:10.3390/en6031298 This link opens in a new window
COBISS.SI-ID:12778011 This link opens in a new window
Publication date in RUL:02.09.2021
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Shortened title:Energies
Publisher:Molecular Diversity Preservation International
COBISS.SI-ID:518046745 This link opens in a new window


License:CC BY 3.0, Creative Commons Attribution 3.0 Unported
Description:You are free to reproduce and redistribute the material in any medium or format. You are free to remix, transform, and build upon the material for any purpose, even commercially. You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Licensing start date:04.03.2013

Secondary language

Keywords:daljinsko ogrevanje, distribucijsko omrežje, energija, eksergija, učinkovitost

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