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Pumpkraftverk som energilagring vid off-grid anläggning: Kombination av sol, vind och vattenkraft i ett autonomt system
Mälardalen University, School of Business, Society and Engineering.
2018 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The downside of using energy from the wind is its fluctuations. The downside of using energy from solar panels is that it produces a low amount of energy during the wintertime when the demand is at its greatest. When said demand is at its lowest the energy from the solar panels is at its peak. To solve this problem and even out the energy production so it coincides with the demand a pump hydroelectric powerplant is being used. In this study, an autonomously system consisting of these three will power a theoretic village of 50 households in the southern part of Sweden. After simulating different scenarios using Excel as the main tool the conclusion is that a system like this is only possible if there is a large water reservoir stationed at an elevated position. This sets requirements on how the geography looks. The study shows that the energy from the solar panels demands a larger reservoir then the energy from the windmills. It also shows that that the energy from the solar panels is more consistent. The perfect combination is a reservoir of at least 2,6 million m3, a windmill with a blade length of 20 meters and solar panels covering an area of 3925 m2. This combination needs a total pump flow of 4000 m3/h. The total efficiency of this system is 45 %. If the pump flow is decreased to 800 m3/h the efficiency will only decrease approximately one percent, however the solar panel area must then increase with approximately 600 m2. So whether this is a viable idea depends on the cost of the pump versus the cost of the solar panels.

Place, publisher, year, edition, pages
2018. , p. 43
Keyword [sv]
Vindkraftverk, Solcell, Solpanel, Vattenkraftverk, Pumpvattenkraftverk, Pump, Simulering, Optimering, Energianvändning
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mdh:diva-38428OAI: oai:DiVA.org:mdh-38428DiVA, id: diva2:1179288
Subject / course
Energy Engineering
Supervisors
Examiners
Available from: 2018-04-12 Created: 2018-01-31 Last updated: 2018-04-12Bibliographically approved

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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