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Ny sommarproduktion av fjärrvärme i Hudiksvall
2015 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this project new concepts for producing district heating during the summer season in Hudiksvall have been evaluated from a technical and economic point of view. The reason for the project was the owner Värmevärdens wish to decrease the systems dependency on pine based biooil. The project evaluated a broad spectrum of alternatives including running of existing plant with coolers, installation of a biofuel dryer, new biofuels hotwater boiler, biofuelled steam boiler and turbine, heat pump and heat storing in either a steal tank or rock cavity.In order to investigate the different concepts a model was created in excel. The evaluation was based on a normal year which was created from daily averages of heat production in the system during nine years along with energy- and budget balances from where production costs for each concept have been estimated. Investment costs was researched for the concepts who were seen as implementable in practice. Production- and investment costs could thereby be used for an economic evaluation of internal rate of return and payback time. Based on the existing plants for heat production in the district heating system along with the economic analysis the project concluded that the most interesting solutions were to install some sort of heat storing unit or a biofuel dryer. This recommendation was based on the results of the economic evaluation but also from the fact that an expansion of production units seems to be a bad way to go due to prognoses of future need for heating which seems to be decreasing.

Place, publisher, year, edition, pages
2015. , 104 p.
Keyword [en]
Technology
Keyword [sv]
Teknik, Fjärrvärme, biobränsle, värmelagring, kraftvärme, systemanalys
Identifiers
URN: urn:nbn:se:ltu:diva-52943Local ID: a03d2ae9-be60-4c18-9371-17df2bdd8be0OAI: oai:DiVA.org:ltu-52943DiVA: diva2:1026316
External cooperation
Subject / course
Student thesis, at least 30 credits
Educational program
Sustainable Energy Engineering, master's level
Examiners
Note
Validerat; 20150625 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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CiteExportLink to record
Permanent link

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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