Timm Swoboda (Author), Katja Klinar (Author), Shahzaib Abbasi (Author), Gerrit Brem (Author), Andrej Kitanovski (Author), Miguel Muñoz Rojo (Author)

Abstract

Solid-state thermal control devices that present an asymmetric heat flow depend-ing on thermal bias directionality, referred to as thermal diodes, have recentlyreceived increased attention for energy management. The use of materials thatcan change phase is a common approach to design thermal diodes, but typicalsizes, moderate rectification ratios, and narrow thermal tunability limit their po-tential applications. In this work, we propose a multilayer thermal diode made ofa combination of phase change and invariant materials. This device presentsstate-of-the-art thermal rectification ratios up to 136% for a temperature rangebetween 300 K and 500 K. Importantly, this design allows to switch betweendistinct rectification states that can be modulated with temperature, achievingan additional degree of thermal control compared with single-rectification-statedevices. We analyze the relevance of our thermal diodes for retaining heat moreefficiently in thermal storage elements.

Keywords

energy engineering;materials science;energy materials;thermal control device;thermal diode;heat storage;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 536:620.1/.2
COBISS: 72781059 Link will open in a new window
ISSN: 2589-0042
Views: 757
Downloads: 106
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Other data

Secondary language: Slovenian
Secondary keywords: gospodarjenje z energijo;znanost o materialih;energijski materiali;toplotni kontrolni element;toplotna dioda;toplotni regulator;shranjevanje toplote;
Type (COBISS): Article
Pages: str. 1-14
Volume: ǂVol. ǂ24
Issue: ǂiss. ǂ8
Chronology: 2021
DOI: 10.1016/j.isci.2021.102843
ID: 13230399