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
Energikartläggning av Benzeliusskolan: Med investeringskalkyl för installation av bergvärme
Luleå University of Technology, Department of Engineering Sciences and Mathematics.
2018 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This thesis includes an energy survey of a school in Luleå called Benzeliusskolan and was carried out on behalf of the municipality of Luleå. Benzeliusskolan is currently heated with electric radiators and the thesis contains an investment calculation for the installation of a geothermal heating system. Calculations have been made to determine Benzeliusskolans theoretical heat demand. A survey of current electricity usage for heating has also been carried out for cost comparisons.

 

The result of the thesis is following:

• The theoretical heat demand for all buildings is 251 212 kWh per year. Transmission losses amount to 228 257 kWh and heat losses through infiltration amount to 34 646 kWh per year. The heat requirement for ventilation was calculated to 58 995 kWh. Heat input of 70 687 kWh takes place every year from internal heat and solar energy.

 

• Mapping current consumption resulted in that current usage is 257 952 kWh of electricity for heating and 12 684 kWh of electricity for tap water per year.

 

• The power requirement for all buildings, including waterborne heating batteries in all ventilation systems, was calculated to 146 kW.

 

• A proposal for a geothermal heating system with a main central in house B where heat pumps are placed and heat transport to the other buildings, houses A and C, takes place through isolated culverts. The cost has been estimated at approximately 2 200 000 SEK through quotes and standard costs. The cost includes geothermal heat pumps, waterborne heating batteries for ventilation systems, drilling, radiators, installation costs and culverts between the buildings. The cost is based on an internal rate of 2% and an expected life span of 20 years.

 

• The investment in a geothermal system results in a reduction in electricity consumption for heating and tap water of 68.8%, 186 275 kWh per year. The investment had resulted in a cost saving of approximately 113 000 SEK per year during the estimated 20-year life span of the heat pump. Break-even occurs after about 19 years and 7 months and the total savings after 20 years amount to 52 000 SEK.

Place, publisher, year, edition, pages
2018.
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-70263OAI: oai:DiVA.org:ltu-70263DiVA, id: diva2:1237214
External cooperation
Luleå kommun
Subject / course
Student thesis, at least 15 credits
Educational program
Energy Engineering, bachelor's level
Examiners
Available from: 2018-08-10 Created: 2018-08-07 Last updated: 2018-08-10Bibliographically approved

Open Access in DiVA

fulltext(3003 kB)0 downloads
File information
File name FULLTEXT01.pdfFile size 3003 kBChecksum SHA-512
f52e435b3ac18a82b48fc9e64840e8156ac583bd739df61f2cb1ee8bc02c6059992756c2c5b623b76a3cd54acee23ca64045d5b91bcfb0f0ceb713ea3a1cd498
Type fulltextMimetype application/pdf

By organisation
Department of Engineering Sciences and Mathematics
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar
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: 3 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