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Griesbach, Marco ; König-Haagen, Andreas ; Heberle, Florian ; Brüggemann, Dieter:
Evaluation and Optimization of the Integration of Ice Energy Storage Systems in Interconnected Supply Networks for Non-Residential Buildings.
2023
Veranstaltung: 36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2023)
, 25.-30. Juni 2023
, Las Palmas de Gran Canaria, Spain.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung
,
Paper
)
DOI: https://doi.org/10.52202/069564-0115
Abstract
Ice energy storage systems (ICES) in non-residential buildings are a promising technology for utilizing waste
heat arising inside the building to efficiently provide heating and cooling without solar assistance. However,
there are currently no recommendations for the dimensioning and operation of ICES in interconnected systems
with a high level of supply security. Therefore, a detailed numerical investigation of a 500 m³ ICES in a research
building is performed and compared with measurement data over one year within this work. Besides, an
economic and ecological analysis, a multi-objective evaluation including direct and social costs caused by
climate change damages is conducted. An optimization of different operation approaches is examined, ranging
from a simple constant operating strategy over a year or representative week, to seasonal control, to an
elaborate weekly varying strategy. Moreover, to determine an optimal storage sizing different system
combinations are investigated, using a downhill simplex algorithm for each given configuration. Frameworks
for Germany, France and EU27 average are used, whereby their influence is investigated by means of a
sensitivity analysis. Through an optimized operation, the CO2 emissions can be reduced by 37 % compared
to a conventional system. The adaptation of the plant concept and the determination of an optimal storage
dimensioning can also significantly increase the economic feasibility of the realization, whereby a high
dependence on the prevailing boundary conditions is evident. The use of ICES leads to an ecological
improvement in all regions considered, whereas the methodology can be applied to further building types in
the future.