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Scaling up magnetocaloric heat pump for building decarbonization initiatives

Liang, Jierong ; Masche, Marvin; Wang, Kun 1; Sittig, Tim; Benke, Dimitri; Fries, Maximilian; Engelbrecht, Kurt; Bahl, Christian R. H.
1 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)

Abstract:

Building decarbonization necessitates renewable heating and cooling solutions such as heat pumps. Magnetocaloric heat pumps (MCHP) offer environmental and efficiency advantages but face challenges when scaling up from existing active magnetic regenerator configurations. This study highlights uneven flow resistance, porosity, and refrigerant magnetocaloric effects as key obstacles to MCHP performance in parallel multi-bed setups. To address these effects, two control strategies for the fluid flow control system were investigated: measurement feedback control and model predictive control. Results show a 36.9 % heating power improvement with measurement feedback control, though with extended control convergence times. Model predictive control achieved approximately seven times faster control convergence compared to the measurement feedback control strategy, despite exhibiting minor overshooting. Utilization factor-based model predictive control increased the heating capacity by 1.6 %–30.9 % and the COP by 1.2 %–10.7 % in scenarios with uneven flow resistance and porosity, offering computational efficiency but assuming even magnetocaloric effects between regenerators. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000175113
Veröffentlicht am 14.10.2024
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 30.11.2024
Sprache Englisch
Identifikator ISSN: 0360-5442, 1873-6785
KITopen-ID: 1000175113
Erschienen in Energy
Verlag Elsevier
Band 310
Seiten Art.-Nr.: 133245
Vorab online veröffentlicht am 23.09.2024
Nachgewiesen in Scopus
Web of Science
Dimensions
Globale Ziele für nachhaltige Entwicklung Ziel 7 – Bezahlbare und saubere Energie
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