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Monitoring of a borehole thermal energy storage in Sweden
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0002-5093-9070
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0002-3490-1777
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2016 (English)In: CLIMA 2016-proceedings of the 12th REHVA World Congress: volume 3 / [ed] Per Kvols Heiseberg, Aalborg University, Department of Civil Enginnering, 2016, Vol. 3Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents the description of the first stage of a project consisting on the monitoring of a newly installed borehole thermal energy storage (BTES) system that started to operate during the autumn of 2015. The BTES system is designed for approximately 4 GWh per year of heat injection and 3 GWh per year of heat extraction and will provide heating and cooling to a set of institutional facilities at Stockholm University, Sweden. The energy storage system consists of a set of 130 borehole heat exchangers, 230 meters deep. Strategic locations within the bore field have been selected to carry out the measurements. The monitoring system comprises temperature and energy flow meters. The temperature measurements are performed using a distributed temperature sensing set-up which allows to measure temperature along the depth of the boreholes, providing a large amount of data for the characterization of the thermal processes in the ground. During the upcoming years, the measured data will be utilized to evaluate and optimize the actual operational condition of the system, and to test the validity of assumptions made during the design phase. Moreover, the measured data will be utilized for validation of current bore field design methods and to have a better understanding of the thermal interaction between neighboring boreholes.

Place, publisher, year, edition, pages
Aalborg University, Department of Civil Enginnering, 2016. Vol. 3
Keyword [en]
ground-coupled heat pump; multiple bore field; borehole heat exchanger; monitoring system
National Category
Energy Engineering
Research subject
Energy Technology
Identifiers
URN: urn:nbn:se:kth:diva-187482ISBN: 87-91606-28-4 (vol3) (print)ISBN: 87-91606-36-5 (set) (print)OAI: oai:DiVA.org:kth-187482DiVA: diva2:932875
Conference
12th REHVA World Congress CLIMA, 22–25 May 2016
Funder
Swedish Energy Agency
Note

QC 20160603

Available from: 2016-06-02 Created: 2016-05-24 Last updated: 2016-06-03Bibliographically approved

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Monitoring of a borehole thermal energy storage in Sweden

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Monzó, PatriciaAcuña, José

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