Effect of the Filling Liquid Ratio on the Thermal Performance of a Novel Thermal Diode with Wick

Zhiyong Li; Tingzhen Ming; Heyu Zhang; Sitong Zhao; Qinggang Wang; Cunjin Cai; Kui Yin; Yueping Fang; Yongjia Wu

doi:10.1007/s11630-024-1954-8

Effect of the Filling Liquid Ratio on the Thermal Performance of a Novel Thermal Diode with Wick

Zhiyong Li
, Tingzhen Ming
, Heyu Zhang
, Sitong Zhao
, Qinggang Wang
, Cunjin Cai
, Kui Yin
, Yueping Fang
, Yongjia Wu

Logistics Academy
Wuhan University of Technology

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

104 Downloads (Pure)

Abstract

The application of thermal diodes, which allow heat to flow more readily in one direction than the other, is an important way to reduce energy consumption in buildings and enhance the battery heat dissipation of electric vehicles. Depending on various factors including the specific design, materials used, and operating conditions, the convective thermal diode can exhibit the best thermal rectification effect in intended applications compared to the other thermal diodes. In this study, a novel convective thermal diode with a wick was proposed based on the phase change heat transfer mechanism. This design takes advantage of both capillary forces provided by the wick and gravity to achieve enhanced unidirectional heat transfer performance for the designed convective thermal diode. The effect of the filling liquid ratio on the thermal performance of the thermal diode was experimentally investigated, which was in good agreement with the theoretical analysis. The research findings showed that with an optimal liquid filling ratio of 140%, the thermal diode with a wick can achieve a better thermal rectification ratio when subjected to a lower heating power, and the maximum thermal rectification ratio of 21.76 was experimentally achieved when the heating power of the thermal diode was 40 W.

Original language	English
Pages (from-to)	396-407
Number of pages	12
Journal	Journal of Thermal Science
Volume	33
Issue number	2
DOIs	https://doi.org/10.1007/s11630-024-1954-8
Publication status	Published - 2 Mar 2024

Bibliographical note

Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

This document is the author’s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it

Funding

This research was supported by the National Natural Science Foundation of China (Grant No. 52208124), Hubei Provincial Key Research and Design Project (Grant No. 2020BAB129), and Scientific Research Foundation of Wuhan University of Technology (Grant No. 40120237 and 40120551).

Funders	Funder number
Hubei Provincial Key Research and Design Project	2020BAB129
Wuhan University of Technology	40120551, 40120237
National Natural Science Foundation of China	52208124

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 11 Sustainable Cities and Communities

Keywords

filling liquid ratio
thermal diode
wick structure
gravity

ASJC Scopus subject areas

General Energy
General Engineering

Access to Document

10.1007/s11630-024-1954-8

Fang2024AAMAccepted author manuscript, 1.79 MB

Cite this

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title = "Effect of the Filling Liquid Ratio on the Thermal Performance of a Novel Thermal Diode with Wick",

abstract = "The application of thermal diodes, which allow heat to flow more readily in one direction than the other, is an important way to reduce energy consumption in buildings and enhance the battery heat dissipation of electric vehicles. Depending on various factors including the specific design, materials used, and operating conditions, the convective thermal diode can exhibit the best thermal rectification effect in intended applications compared to the other thermal diodes. In this study, a novel convective thermal diode with a wick was proposed based on the phase change heat transfer mechanism. This design takes advantage of both capillary forces provided by the wick and gravity to achieve enhanced unidirectional heat transfer performance for the designed convective thermal diode. The effect of the filling liquid ratio on the thermal performance of the thermal diode was experimentally investigated, which was in good agreement with the theoretical analysis. The research findings showed that with an optimal liquid filling ratio of 140\%, the thermal diode with a wick can achieve a better thermal rectification ratio when subjected to a lower heating power, and the maximum thermal rectification ratio of 21.76 was experimentally achieved when the heating power of the thermal diode was 40 W.",

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author = "Zhiyong Li and Tingzhen Ming and Heyu Zhang and Sitong Zhao and Qinggang Wang and Cunjin Cai and Kui Yin and Yueping Fang and Yongjia Wu",

note = "Copyright {\textcopyright} and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders. This document is the author{\textquoteright}s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it ",

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AU - Ming, Tingzhen

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AU - Zhao, Sitong

AU - Wang, Qinggang

AU - Cai, Cunjin

AU - Yin, Kui

AU - Fang, Yueping

AU - Wu, Yongjia

N1 - Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders. This document is the author’s post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it

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N2 - The application of thermal diodes, which allow heat to flow more readily in one direction than the other, is an important way to reduce energy consumption in buildings and enhance the battery heat dissipation of electric vehicles. Depending on various factors including the specific design, materials used, and operating conditions, the convective thermal diode can exhibit the best thermal rectification effect in intended applications compared to the other thermal diodes. In this study, a novel convective thermal diode with a wick was proposed based on the phase change heat transfer mechanism. This design takes advantage of both capillary forces provided by the wick and gravity to achieve enhanced unidirectional heat transfer performance for the designed convective thermal diode. The effect of the filling liquid ratio on the thermal performance of the thermal diode was experimentally investigated, which was in good agreement with the theoretical analysis. The research findings showed that with an optimal liquid filling ratio of 140%, the thermal diode with a wick can achieve a better thermal rectification ratio when subjected to a lower heating power, and the maximum thermal rectification ratio of 21.76 was experimentally achieved when the heating power of the thermal diode was 40 W.

AB - The application of thermal diodes, which allow heat to flow more readily in one direction than the other, is an important way to reduce energy consumption in buildings and enhance the battery heat dissipation of electric vehicles. Depending on various factors including the specific design, materials used, and operating conditions, the convective thermal diode can exhibit the best thermal rectification effect in intended applications compared to the other thermal diodes. In this study, a novel convective thermal diode with a wick was proposed based on the phase change heat transfer mechanism. This design takes advantage of both capillary forces provided by the wick and gravity to achieve enhanced unidirectional heat transfer performance for the designed convective thermal diode. The effect of the filling liquid ratio on the thermal performance of the thermal diode was experimentally investigated, which was in good agreement with the theoretical analysis. The research findings showed that with an optimal liquid filling ratio of 140%, the thermal diode with a wick can achieve a better thermal rectification ratio when subjected to a lower heating power, and the maximum thermal rectification ratio of 21.76 was experimentally achieved when the heating power of the thermal diode was 40 W.

KW - filling liquid ratio

KW - thermal diode

KW - wick structure

KW - gravity

U2 - 10.1007/s11630-024-1954-8

DO - 10.1007/s11630-024-1954-8

M3 - Article

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EP - 407

JO - Journal of Thermal Science

JF - Journal of Thermal Science

IS - 2

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Effect of the Filling Liquid Ratio on the Thermal Performance of a Novel Thermal Diode with Wick

Abstract

Bibliographical note

Funding

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this