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Article

A Hybrid Bimodal LSTM Architecture for Cascading Thermal Energy Storage Modelling

1
CERTH/IBO—Centre for Research and Technology Hellas, Institute of Bio-Economy and Agri-Technology, 57001 Thessaloniki, Greece
2
Department of Computer Science, University of Thessaly, 35100 Lamia, Greece
3
Systems & Control Research Centre, City University of London, Northampton Square, London EC1V 0HB, UK
4
AIDEAS OÜ, Narva mnt 5, 10117 Tallinn, Estonia
5
Department of Energy Systems, Geopolis Campus, University of Thessaly, 41500 Larisa, Greece
*
Author to whom correspondence should be addressed.
Academic Editor: Abu-Siada Ahmed
Energies 2022, 15(6), 1959; https://doi.org/10.3390/en15061959
Received: 19 January 2022 / Revised: 2 March 2022 / Accepted: 3 March 2022 / Published: 8 March 2022
Modelling of thermal energy storage (TES) systems is a complex process that requires the development of sophisticated computational tools for numerical simulation and optimization. Until recently, most modelling approaches relied on analytical methods based on equations of the physical processes that govern TES systems’ operations, producing high-accuracy and interpretable results. The present study tackles the problem of modelling the temperature dynamics of a TES plant by exploring the advantages and limitations of an alternative data-driven approach. A hybrid bimodal LSTM (H2M-LSTM) architecture is proposed to model the temperature dynamics of different TES components, by utilizing multiple temperature readings in both forward and bidirectional fashion for fine-tuning the predictions. Initially, a selection of methods was employed to model the temperature dynamics of individual components of the TES system. Subsequently, a novel cascading modelling framework was realised to provide an integrated holistic modelling solution that takes into account the results of the individual modelling components. The cascading framework was built in a hierarchical structure that considers the interrelationships between the integrated energy components leading to seamless modelling of whole operation as a single system. The performance of the proposed H2M-LSTM was compared against a variety of well-known machine learning algorithms through an extensive experimental analysis. The efficacy of the proposed energy framework was demonstrated in comparison to the modelling performance of the individual components, by utilizing three prediction performance indicators. The findings of the present study offer: (i) insights on the low-error performance of tailor-made LSTM architectures fitting the TES modelling problem, (ii) deeper knowledge of the behaviour of integral energy frameworks operating in fine timescales and (iii) an alternative approach that enables the real-time or semi-real time deployment of TES modelling tools facilitating their use in real-world settings. View Full-Text
Keywords: bi-modal LSTM; cascading energy framework; district heating; thermal energy storage bi-modal LSTM; cascading energy framework; district heating; thermal energy storage
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MDPI and ACS Style

Anagnostis, A.; Moustakidis, S.; Papageorgiou, E.; Bochtis, D. A Hybrid Bimodal LSTM Architecture for Cascading Thermal Energy Storage Modelling. Energies 2022, 15, 1959. https://doi.org/10.3390/en15061959

AMA Style

Anagnostis A, Moustakidis S, Papageorgiou E, Bochtis D. A Hybrid Bimodal LSTM Architecture for Cascading Thermal Energy Storage Modelling. Energies. 2022; 15(6):1959. https://doi.org/10.3390/en15061959

Chicago/Turabian Style

Anagnostis, Athanasios, Serafeim Moustakidis, Elpiniki Papageorgiou, and Dionysis Bochtis. 2022. "A Hybrid Bimodal LSTM Architecture for Cascading Thermal Energy Storage Modelling" Energies 15, no. 6: 1959. https://doi.org/10.3390/en15061959

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