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Mapping Energy and Exergy Flows of District Heating in Sweden
Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS), Energiteknik.ORCID iD: 0000-0001-8307-124X
Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS), Energiteknik.ORCID iD: 0000-0001-9069-0807
2016 (English)In: ProceedingsĀ the 15th International Symposium on District Heating and Cooling: September 4th - 7th, 2016, Seoul, South Korea / [ed] Rolf Ulseth & Kyung Min Kim, 2016, 96-102 p.Conference paper, Published paper (Refereed)
Abstract [en]

District heating has been available in Sweden since the 1950s and used more than half of the total energy use in dwelling and no-residential premises in 2013. Energy and exergy efficient conversion and energy resources are key factors to reduce the environmental impact. It is important to understand energy and exergy flows from both the supply and demand sides. The exergy method is also a useful tool for exploring the goal of more efficient energy-resource use. Sankey diagrams together with energy and exergy analyses are presented to help policy/decision makers and others to better understand energy and exergy flows from primary energy resource to end use. The results show the most efficient heating method in current district heating systems, and the use of renewable energy resources in Sweden. It is exergy inefficient to use fossil fuels to generate low quality heat. However, renewable energies, such as geothermal and solar heating with relative low quality, make it more exergy efficient. Currently, about 90% of the energy sources in the Swedish district heating sector have an origin from non-fossil fuels. Combined heat and power is an efficient simultaneous generator of electricity and heat as well as heat pump with considering electricity production. Higher temperature distribution networks give more distribution losses, especially in exergy content. An outlook for future efficient district heating systems is also presented.

Place, publisher, year, edition, pages
2016. 96-102 p.
Keyword [en]
District heating, exergy, Sankey diagram, Sweden
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:hh:diva-31984OAI: oai:DiVA.org:hh-31984DiVA: diva2:969047
Conference
The 15th International Symposium on District Heating and Cooling September 4-7, 2016, Seoul, Republic of Korea (South Korea)
Available from: 2016-09-13 Created: 2016-09-12 Last updated: 2017-01-13Bibliographically approved

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fulltext(283 kB)141 downloads
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Gong, MeiWerner, Sven

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CiteExportLink to record
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Cite
Citation style
  • apa
  • ieee
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  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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  • asciidoc
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