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Thermal Energy Storages in Residential Areas: – a potential to increase renewable power generation?
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics. (Built Environment Energy Systems Group)ORCID iD: 0000-0002-1650-8947
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.ORCID iD: 0000-0001-6586-4932
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.ORCID iD: 0000-0003-4887-9547
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2018 (English)In: 2018 ACEEE Summer Study on Energy Efficiency in Buildings: Making Efficiency Easy and Enticing / [ed] Fred Grossberg, Washington D.C., 2018, Vol. 20, p. 11-1-11-12, article id 0194_0286_000156Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

With an increased ambition of implementing renewable electricity production in our energy systems follows the need of handling the inherent variability from some of these production sources (e.g. wind and solar). This could be via curtailments, infrastructural reinforcements of the power grid, and/or increased utilization of power system reserves. The aim of this study was to investigate if power surplus and deficit due to mismatch between intermittent power generation and power demand could be reduced with electric heat pumps (used for power-to-heat purposes), combined heat and power (CHP) production (for power balancing), and seasonal thermal energy storage (STES) (as buffering capacity). A residential area consisting of buildings refurbished for improved energy performance, roof top solar photovoltaic (PV) systems, a local heat distribution system, a small-scale CHP plant, central heat pumps, and a STES, was simulated. The heat pumps were given priority to use surplus power from roof top PV generation or surplus from the grid (e.g. wind power). The CHP plant produced power during power deficits. Surplus heat from the CHP plant as well as from the heat pumps was stored in the STES. The results showed a reduction of the surplus power from the local PV systems towards the upstream power grid. Also, the possibility to offer regulative service towards upstream power grid by using CHP was demonstrated. The conclusion is that power-to-heat and CHP can significantly reduce the mismatch between variable power generation and power demand.

Place, publisher, year, edition, pages
Washington D.C., 2018. Vol. 20, p. 11-1-11-12, article id 0194_0286_000156
Keywords [en]
Thermal Storage, Power to heat, Combined heat and power, CHP, P2H, Power balancing
National Category
Energy Systems
Research subject
Physics
Identifiers
URN: urn:nbn:se:uu:diva-363957OAI: oai:DiVA.org:uu-363957DiVA, id: diva2:1257648
Conference
2018 ACEEE Summer Study on Energy Efficiency in Buildings, Pacific Grove, CA, August 12-17, 2018.
Available from: 2018-10-22 Created: 2018-10-22 Last updated: 2018-10-29Bibliographically approved

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Monie, SvanteNilsson, AnnicaLingfors, DavidWidén, JoakimÅberg, Magnus

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