Performance analysis of a district heating system

Ljubenko, Andrej (author), Poredoš, Alojz (author), Morosuk, Tatiana (author), Tsatsaronis, George (author)

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.

• Language: English
• 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
• Year: 2013
• Number of pages: Str. 1298-1313
• Numbering: Vol. 6, iss. 3
• PID: 20.500.12556/RUL-129503
• UDC: 620.9:697
• ISSN on article: 1996-1073
• DOI: 10.3390/en6031298
• COBISS.SI-ID: 12778011
• Publication date in RUL: 02.09.2021

Record is a part of a journal

• Title: Energies
• Shortened title: Energies
• Publisher: Molecular Diversity Preservation International
• ISSN: 1996-1073
• COBISS.SI-ID: 518046745

Licences

• License: CC BY 3.0, Creative Commons Attribution 3.0 Unported
• Link: https://creativecommons.org/licenses/by/3.0/deed.en
• 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

• Language: Slovenian
• Keywords: daljinsko ogrevanje, distribucijsko omrežje, energija, eksergija, učinkovitost