Feasibility of underground seasonal storage of solar heat in Finland

dc.contributorAalto Universityen
dc.contributor.authorJaniszewski, Mateuszen_US
dc.contributor.authorKopaly, Antonien_US
dc.contributor.authorHonkonen, Mikkoen_US
dc.contributor.authorKukkonen, Ilmoen_US
dc.contributor.authorUotinen, Laurien_US
dc.contributor.authorSiren, Topiasen_US
dc.contributor.authorRinne, Mikaelen_US
dc.contributor.departmentDepartment of Civil Engineeringen
dc.contributor.editorPG, Ranjithen_US
dc.contributor.editorJian, Zhaoen_US
dc.contributor.organizationUniversity of Helsinkien_US
dc.description.abstractThe global challenge of climate change is urging for renewable energy sources to reduce greenhouse gas emissions. One of the applications of renewable energy is the solar district heating plant, which uses solar heat for space heating on a community scale. Seasonal storage of solar heat is crucial in solar district heating plants as a solution to the mismatch between the energy supply and demand. This is especially important in countries located in high latitudes with high levels of solar insolation and low heating demand in the summer, and low sun insolation and high heating demand in the winter time. This study investigates the selection of the most feasible method for seasonal storage of solar heat at high latitudes. The aim is to identify the key aspects of method selection and design of underground solar heat storage. Practices of underground thermal energy storage in Finland and other countries with similar ground conditions are reviewed. Five heat storage methods are evaluated based on their efficiency, cost, construction method, and suitability for typical ground conditions in Finland. The available methods of seasonal heat storage are compared, and the most promising method for solar heat storage in Finland is proposed. In addition, the potential provided by a combination of two or more methods is examined. The borehole storage method is proposed for storing solar heat in Finland. The combined method with a rock pit used for short-term heat storage and boreholes for long term storage is also an attractive and technically feasible option for Finnish ground conditions.en
dc.description.versionPeer revieweden
dc.identifier.citationJaniszewski, M, Kopaly, A, Honkonen, M, Kukkonen, I, Uotinen, L, Siren, T & Rinne, M 2016, Feasibility of underground seasonal storage of solar heat in Finland . in R PG & Z Jian (eds), International Conference on Geo-mechanics, Geo-energy and Geo-resources : Conference Proceedings ., 236, Monash University, Melbourne, Australia, pp. 959-965, International Conference on Geo-mechanics, Geo-energy and Geo-resources, Melbourne, Australia, 28/09/2016 .en
dc.identifier.otherPURE UUID: ff9f0813-cc57-494c-a5ba-9286d7777d93en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/ff9f0813-cc57-494c-a5ba-9286d7777d93en_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/15010510/IC3G_2016_paper_236.pdfen_US
dc.relation.ispartofInternational Conference on Geo-mechanics, Geo-energy and Geo-resourcesen
dc.relation.ispartofseriesInternational Conference on Geo-mechanics, Geo-energy and Geo-resourcesen
dc.subject.keywordSeasonal thermal energy storageen_US
dc.subject.keywordSolar district heatingen_US
dc.subject.keywordMethod selectionen_US
dc.titleFeasibility of underground seasonal storage of solar heat in Finlanden
dc.typeConference article in proceedingsfi