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Exergy analysis and thermo-economic optimization of a district heating network with solar- photovoltaic and heat pumps
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
IMT Atlantique - DSEE - Département Systèmes énergétiques et environnement.
IMT Atlantique - DSEE - Département Systèmes énergétiques et environnement.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
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2019 (English)In: Proceedings of the 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems / [ed] Wojciech Stanek, Paweł Gładysz, Sebastian Werle, Wojciech Adamczyk, 2019Conference paper, Published paper (Refereed)
Abstract [en]

Electrification of district heating networks, especially using heat pumps, is widely recommended in literature. Installing heat pumps affects both electricity and heating networks. Due to lack of suitable modelling tools, size optimization of heat pumps in the heating network with the full consideration of the electric distribution network is not well addressed in literature. This paper presents an optimization of a district heating network consisting of solar photovoltaic and heat pumps with the consideration of the detail parameters of heating and electric distribution networks. An extended energy hub approach is used to model the energy system. Exergy and energy analyses are applied to identify and isolate lossy branches in a meshed heating network. Both methods resulted into the same reduced topology. Particle swarm optimization is then applied on the reduced topology in order to find out the most economical temperature profiles and size of distributed heat pumps. The thermo-economic results are found to be highly influenced by the heat demand distribution, the power loss in both electric and heat distribution network, the cost of generation, the temperature limits and the coupling effect of the heat pumps.

Place, publisher, year, edition, pages
2019.
Keywords [en]
electrification of district heating network, energy hub, exergy, multi-carrier energy systems, particle swarm optimization, thermo-economic optimization
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-261179ISBN: 978-83-61506-51-5 (print)OAI: oai:DiVA.org:kth-261179DiVA, id: diva2:1356963
Conference
ECOS2019: 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
Note

QC 20191209

Available from: 2019-10-02 Created: 2019-10-02 Last updated: 2019-12-09Bibliographically approved

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Ayele, Getnet TadesseLaumert, Björn

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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  • asciidoc
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