Latent thermal energy storage using solid-state phase transformation in caloric materials

Ahčin, Žiga (author), Kitanovski, Andrej (author), Tušek, Jaka (author)

Materials with solid-to-solid phase transformations have considerable potential for use in thermal energy storage systems. While these materials generally have lower latent heat than materials with a solid-to-liquid phase transformation, their significantly higher thermal conductivity enables rapid thermal charging/discharging. Here, we show that this propertymakes them particularly promising for thermal energy storage applications requiring highly dynamic operation. A numerical analysis (using an experimentally validated numerical model) has revealed that some materials with solid-tosolid phase transformations offer an excellent capacity-power trade-off for thermal energy storage applications compared to the corresponding conventional phase change materials. While most conventional phase change materials generally offer higher thermal capacity due to larger latent heat, some metallic materials with solid-state transformation (e.g., Ni-Ti-based alloys, Mn-Co-Ga-B alloys) exhibit up to 10 times higher thermal output powers. These results highlight a significant potential of caloric solid-state materials to outperform traditional latent thermal storage systems for certain applications.

• Language: English
• Keywords: thermal energy storage, caloric materials, solid state, phase change materials, numerical analysis, solid-state transformation, latent heat, heat storage
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 18 str.
• Numbering: Vol. 5, iss. 9, art. 102175
• PID: 20.500.12556/RUL-162461
• UDC: 536.7:519.61
• ISSN on article: 2666-3864
• DOI: 10.1016/j.xcrp.2024.102175
• COBISS.SI-ID: 206949635
• Publication date in RUL: 24.09.2024

Record is a part of a journal

• Title: Cell reports physical science
• Publisher: Cell Press, Elsevier
• ISSN: 2666-3864
• COBISS.SI-ID: 56382467

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: shranjevanje toplotne energije, kalorični materiali, trdno stanje, materiali za fazno spremembo, numerična analiza, trdninska fazna transformacija, latentna toplota, hranilnik toplote

Projects

• Funder: ARIS - Slovenian Research and Innovation Agency
• Project number: P2-0422
• Name: Funkcionalne tekočine za napredne energetske sisteme

• Funder: ARIS - Slovenian Research and Innovation Agency
• Project number: J2-4478
• Name: HLAJENJE V TRDNEM STANJU S HIDROSTATIČNIM TLAKOM: RAZVOJ BAROKALORIČNE HLADILNE NAPRAVE (COOL PRESS)