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The combi heat store - a combined rock cavern/borehole heat store
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.ORCID iD: 0000-0001-7144-9778
1994 (English)In: Tunnelling and Underground Space Technology, ISSN 0886-7798, E-ISSN 1878-4364, Vol. 9, no 2, p. 243-249Article in journal (Refereed) Published
Abstract [en]

Since 1988, Sweden and Finland have collaborated bilaterally on thermal energy storage with respect to information exchange and collaborative R&D projects. The two countries have both investigated underground thermal energy storage for nearly two decades, and have similar bedrock-the Fenno-Scandian granitic rocks. This paper reviews the work performed in the field of combined rock cavern and borehole heat stores, concerned with construction technology, costs and design principles. One example is an asymmetric store, in the form of 40- to 60-m-long horizontal boreholes between two rock caverns, with the caverns themselves comprising only about 10% of the total storage volume. This design has a specific cost of $US0.40 million/ GWh and $US0.24 million/ GWh for storage capacities of 6 GWh and 36 GWh, respectively. Half of the total construction cost relates to the rock cavern part of the store.

Place, publisher, year, edition, pages
1994. Vol. 9, no 2, p. 243-249
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-2688DOI: 10.1016/0886-7798(94)90036-1ISI: A1994NH82900014Scopus ID: 2-s2.0-0028184451Local ID: 0579b850-b84c-11db-abff-000ea68e967bOAI: oai:DiVA.org:ltu-2688DiVA, id: diva2:975541
Note
Godkänd; 1994; 20070209 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Nordell, Bo

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