umu.sePublications
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
Torkning av flis med restvärme: Metoder för att sänka återledningstemperaturen
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
2012 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The purpose of this study has been to evaluate whether a Low temperature bio-mass dryer could be integrated with the local district heating system in Malå. The aim is to increase the thermal efficiency of the cogeneration plant in Malå, by lowering the temperature of the cooling medium. Another benefit that comes from this is improved combustion efficiency at the power plant, since drying the fuel causes an Increase of the heating value.

Simulations has been made in Excel, and with use of linear regression, to find out if it is profitable. Data for this purpose has been supplied by the power company Skellefteåkraft and furthermore SMHI.

The result of the Calculations shows that a very efficient bio-mass dryer is needed, if yield of investments should be made possible. An Investment of 4,27 Mkr, in a dryer, could at a such criterium return 60000 kr/year, if the price of the biomass is 190kr/MWh. Furthermore this also demands that the time of instalments is set to 25years, and that electrical power can be used at the cost of 0,30kr/kWh.

Calculations also shows that it could be quite profitable, If wood chips instead were to be made, with use of the Bio-mass dryer. In a such case the income could be 2,5 Mkr/year even if the investment of the dryer would be 10 Mkr. This demand that the time of instalments is set to 25 years and that biomass can be purchased at he cost of 170kr/MWh.

Place, publisher, year, edition, pages
2012. , 93 p.
Keyword [sv]
Torkning
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:umu:diva-59428OAI: oai:DiVA.org:umu-59428DiVA: diva2:552185
External cooperation
Skellefteåkraft AB
Educational program
Bachelor of Science Programme in Energy Engineering
Uppsok
Technology
Supervisors
Examiners
Available from: 2012-09-14 Created: 2012-09-13 Last updated: 2012-09-14Bibliographically approved

Open Access in DiVA

Torkning av flis(3004 kB)609 downloads
File information
File name FULLTEXT01.pdfFile size 3004 kBChecksum SHA-512
6c6625012a29e93c8553dae99208f12b7c1e77ef175cbb497d3ed4b6526964dffa703b068eac936bcd2cb5728c3278de4a071503de5c650a13d9059e62c1a264
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Eriksson, Anders
By organisation
Department of Applied Physics and Electronics
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 609 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: 186 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