uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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
District heating in Lyckebo: Investigation of distribution losses
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
2015 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This study investigates the status and potential of the low temperature district heating system in Lyckebo, focusing on the distribution losses in the culvert system and in the heat exchangers. The Lyckebo system was built in the 1980’s as a test system with heating from a solar field and an electrical boiler. The unique features with this system were a cavern for storage of excess heat combined with a low temperature system. Today, the solar field has been substituted with two pellet boilers, but the cavern is still in service.

Low temperature district heating systems are built in order to lower the losses, due to a smaller temperature difference between the medium in the culvert and the soil. This technology is used in newly built energy efficient residential areas, which makes it interesting to investigate the status of a system that was built in the 1980’s, in comparison to the possibilities of low temperature systems today.

A simulation model has been developed to calculate the theoretical losses in the culvert system with production data from 2013. The total instantaneous losses in the culvert system were between 210- 280 kW and the highest losses in  can be found in the secondary system. There are heat exchangers in the system that has a return temperature of approximately 8°C lower than the return temperature in the system, which leads to the conclusion that many of the exchangers in the system probably have poor energy utilization.

Place, publisher, year, edition, pages
2015. , 42 p.
Series
TVE, 15 022 maj
Keyword [en]
Lyckebo, district heating, distribution losses, low temperature
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-253800OAI: oai:DiVA.org:uu-253800DiVA: diva2:816035
External cooperation
Vattenfall Värme
Educational program
Systems in Technology and Society Programme
Supervisors
Examiners
Available from: 2015-06-09 Created: 2015-06-02 Last updated: 2015-06-09Bibliographically approved

Open Access in DiVA

fulltext(7188 kB)236 downloads
File information
File name FULLTEXT01.pdfFile size 7188 kBChecksum SHA-512
209cf41c58e27cd3ba95dd080a0347df6a1e12b2099dbaa3d592acd5f74d2a6ea1fc661533f776bb8c11c63c7acc0304dcb4922569ec73cbbdd1658ac1bac615
Type fulltextMimetype application/pdf

By organisation
Department of Engineering Sciences
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 236 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 885 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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