Ferrofluidic thermal switch in a magnetocaloric device

Klinar, Katja (avtor), Vozel, Katja (avtor), Swoboda, Timm (avtor), Sojer, Tom (avtor), Muñoz Rojo, Miguel (avtor), Kitanovski, Andrej (avtor)

Thermal switches are advanced heat-management devices that represent a new opportunity to improve the energy efficiency and power density of caloric devices. In this study we have developed a numerical model to analyze the operation and the performance of static thermal switches in caloric refrigeration. The investigation comprises a parametric analysis of a realistic ferrofluidic thermal switch in terms of the maximum temperature span, cooling power, and coefficient of performance. The highest achieved temperature span between the heat source and the heat sink was 1.12 K for a single embodiment, which could be further developed into a regenerative system to increase the temperature span. A sensitivity analysis is conducted to correlate the relationship between the input parameters and the results. We show that thermal switches can be used in caloric devices even when switching ratios are small, which greatly extends the possibilities to implement different types of thermal switches.

• Jezik: Angleški jezik
• Ključne besede: thermal switches, ferrofluids, magnetic cooling, heat transfer, thermal management, sensitivity analysis
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: 15 str.
• Številčenje: Vol. 25, iss. 2, art. 103779
• PID: 20.500.12556/RUL-134893
• UDK: 536:620.1/.2
• ISSN pri članku: 2589-0042
• DOI: 10.1016/j.isci.2022.103779
• COBISS.SI-ID: 96902659
• Datum objave v RUL: 10.02.2022

KLINAR, Katja, VOZEL, Katja, SWOBODA, Timm, SOJER, Tom, MUÑOZ ROJO, Miguel in KITANOVSKI, Andrej, 2022, Ferrofluidic thermal switch in a magnetocaloric device. iScience [na spletu]. 2022. Vol. 25, no. 2,  103779. [Dostopano 21 april 2025]. DOI 10.1016/j.isci.2022.103779. Pridobljeno s: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=slv&id=134893

Gradivo je del revije

• Naslov: iScience
• Založnik: Cell Press, Elsevier
• ISSN: 2589-0042
• COBISS.SI-ID: 24098568

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: toplotna stikala, ferofluidi, magnetno hlajenje, prenos toplote, upravljanje s toploto, občutljivostna analiza