The numerical study on performance evaluation of a thermal switch capacitor in a magnetocaloric cooling device

Petelin, Nada (author), Vozel, Katja (author), Klinar, Katja (author), Kitanovski, Andrej (author)

Compact, solid thermal control devices offer a new way to control the intensity and direction of heat flow between the components of a system, which is crucial for both optimized performance and safety. In this work we study a thin, silicon thermal switch capacitor (TSC) used for heat transport in a magnetocaloric cooling system. A numerical model was developed to quantify the effects of various operating conditions and design parameters on the performance of a magnetocaloric device with an embedded TSC. Based on realistic material properties, a maximum cooling-power density of 4000 Wm$^{-2}$ (2025 Wkg$_{mcm}^{-1}$) was obtained for a zero temperature span and an operating frequency of 20 Hz. The use of the presented device was demonstrated on a battery system, motivating further experimental studies to develop a new, compact cooling device that can be directly attached to a heat reservoir, making it desirable for a variety of applications.

• Language: English
• Keywords: solid thermal switch capacitors, thermal control devices, magnetocaloric cooling heat pump, materials science, thermal engineering, thermal property
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2022
• Number of pages: 20 str.
• Numbering: Vol. 25, iss. 12, art. 105517
• PID: 20.500.12556/RUL-143218
• UDC: 536
• ISSN on article: 2589-0042
• DOI: 10.1016/j.isci.2022.105517
• COBISS.SI-ID: 130246147
• Publication date in RUL: 08.12.2022

Record is a part of a journal

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

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

• Language: Slovenian
• Keywords: toplotno stikalni kondenzatorji, toplotni kontrolni elementi, magnetokalorične toplotne črpalke