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Minimum-cost district heat production systems of different sizes under different environmental and social cost scenarios
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (Sustainable Built Environment)
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (Sustainable Built Environment)
2014 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 136, 881-893 p.Article in journal (Refereed) Published
Abstract [en]

District heat systems can contribute to the achievement of social and environmental targets and energy security. District heat production systems (DHSs) vary in size depending on heat demand, which is influenced by several factors such as local climatic conditions and the sizes of the communities they serve. In this study, we analyzed options for minimum-cost DHSs of different sizes under different environmental and social cost scenarios. We calculated the production cost and primary energy use of district heat for minimum-cost options by considering a value of cogenerated electricity equivalent to the value of electricity produced in minimum-cost standalone condensing power plants. We varied the size of DHSs from 100 to 1800 GWhheat per year to investigate how size influences the minimum-cost compositions of production units and district heat production costs. We determined that the optimal composition and cost of district heat production is dependent on the size of the system, the overall load factor of heat demand and the technologies considered for both DHSs and reference power plants. In general, cogenerated district heat is more energy-efficient than district heat from heat-only production and also more cost-efficient, except for small DHSs, for which cogenerated district heat is more costly than heat-only production. The cost and primary energy use of district heat production is dependent on environmental and social cost scenarios; however, this dependence is reduced if a DHS is cost-minimized and based on cogenerated units.

Place, publisher, year, edition, pages
2014. Vol. 136, 881-893 p.
Keyword [en]
coproduction, district heat, minimum cost, environmental tax, production scale
National Category
Energy Systems
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
URN: urn:nbn:se:lnu:diva-36205DOI: 10.1016/j.apenergy.2014.07.080ISI: 000345725800086OAI: oai:DiVA.org:lnu-36205DiVA: diva2:735451
Available from: 2014-07-28 Created: 2014-07-28 Last updated: 2015-01-15Bibliographically approved

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Truong, Nguyen LeGustavsson, Leif
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CiteExportLink to record
Permanent link

Direct link
Cite
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
  • text
  • asciidoc
  • rtf