20.500.12556/RUL-129503 Performance analysis of a district heating system 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. district heating systems distribution network energy exergy efficiency daljinsko ogrevanje distribucijsko omrežje energija eksergija učinkovitost true false true Angleški jezik Slovenski jezik Članek v reviji 2021-09-02 13:17:38 2021-09-02 13:17:40 2022-09-08 04:08:55 0000-00-00 00:00:00 2013 0 0 Str. 1298-1313 iss. 3 Vol. 6 Mar. 2013 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.9:697 1996-1073 10.3390/en6031298 12778011 RAZ_Ljubenko_Andrej_2013.pdf RAZ_Ljubenko_Andrej_2013.pdf 1 35C51F3A2EE5C8F958788682E5B88EAF 3ae2385f9c6ef9a4c87ea0d757b6a98c4ad148423749afc5749403ab4f6b8b77 579f4c41-0bdf-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146488 https://www.mdpi.com/1996-1073/6/3/1298 0 435cbe61-0bdf-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146487 Fakulteta za strojništvo 0 0 0