Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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
Kostnadsanalys av investering i en fjärrvärmeackumulator: Ett underlag för beslut om utökade lagringsmöjligheter vid Bomhus Energi
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
2019 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The district heating system of Gävle will within a few years likely undergo changing routines in production and a rising demand for heat, which will increase the need for flexibility and availability in the production units. It is therefore relevant to study the economic potential of installing a thermal storage at the largest production unit in the system; Bomhus Energi. For storing heat over short time spans in district heating networks it is common to use heat accumulators. A model of the district heating system was created within an existing model structure. The system was simulated in scenarios where electricity price, electricity certificate price and heat demand were varied. For each scenario four different sizes of heat storages were tested. The reduction in production cost was used to calculate the payback time for each accumulator. None of the accumulators received a payback time shorter than the economic lifespan of 20 years. The second largest storage (4000 m3) received the shortest payback times, the best result being 23 years in the scenario of increased heat demand. The results for the largest storage (20000 m3) indicates on a large potential under certain circumstances. The study concludes that a heat accumulator would not be profitable under the investigated circumstances. However, it indicates that there are cases where a heat storage of the right size could be a good investment. For further study it is recommended to investigate the case of greater heat demand and accumulators with a volume between 4000 - 20000 m3.

Place, publisher, year, edition, pages
2019. , p. 39
Series
UPTEC ES, ISSN 1650-8300 ; 19033
Keywords [sv]
fjärrvärme, värmelagring, ackumulator, återbetalningstid
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:uu:diva-398740OAI: oai:DiVA.org:uu-398740DiVA, id: diva2:1376602
External cooperation
Bomhus Energi AB
Educational program
Master Programme in Energy Systems Engineering
Supervisors
Examiners
Available from: 2019-12-10 Created: 2019-12-09 Last updated: 2019-12-10Bibliographically approved

Open Access in DiVA

fulltext(1685 kB)7 downloads
File information
File name FULLTEXT01.pdfFile size 1685 kBChecksum SHA-512
b57a084f36b9794b0c1b5bb214189fa93b80d65e210b4c7305b7cd111c8947f6c1fa52cf9d8be73c1fa5523a4f026ea529fe26d60f22b4cde39188bd229d2379
Type fulltextMimetype application/pdf

By organisation
Byggteknik
Energy Systems

Search outside of DiVA

GoogleGoogle Scholar
Total: 7 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: 26 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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