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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Combining sorption storage and electric heat pumps to foster integration of solar in buildings
Authors: Tzinnis, Efstratios
Baldini, Luca
et. al: No
DOI: 10.1016/j.apenergy.2021.117455
Published in: Applied Energy
Volume(Issue): 301
Issue: 117455
Issue Date: 1-Nov-2021
Publisher / Ed. Institution: Elsevier
ISSN: 0306-2619
Language: English
Subjects: Liquid sorption storage; Long-term thermal energy storage; Seasonal energy storage; Energy flexibility; Power to heat; PV integration
Subject (DDC): 621.04: Energy engineering
Abstract: This article presents a numerical study on the building integration of a liquid sorption storage combined with an air-source electric heat pump. The double staging of the sorption storage (i.e. a chemical heat pump) and an electric heat pump leads to significant electricity demand and CO2 emission reductions. Further, it provides an effective coupling between the heat demand of the building and the electricity supply, allowing for optimal integration of solar energy using photovoltaics. For the buildings analyzed, an autarky level of up to 83% is achieved. Winter electricity demand and emission reductions respectively reached values of up to 41%. The storage integration was studied performing dynamic building simulations. The simulation model for the liquid sorption storage was based on a grey box approach. This features a simple analytical model being tuned to match with performance data available from experiments conducted on a lab scale test rig. The presented integration of a compact seasonal thermal energy storage at the building scale represents a promising approach for a grid compliant integration of renewable energy, significantly reducing electricity demand peaks and related CO2 emissions in winter.
Fulltext version: Published version
License (according to publishing contract): CC BY-NC-ND 4.0: Attribution - Non commercial - No derivatives 4.0 International
Departement: Architecture, Design and Civil Engineering
Organisational Unit: Centre for Building Technologies and Processes (ZBP)
Appears in collections:Publikationen Architektur, Gestaltung und Bauingenieurwesen

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