Construction of highly efficient heat conduction channels within expanded graphite/paraffin phase change composites and their thermophysical properties
Paraffin waxes (PW) are organic phase change materials (PCMs) that can be potentially applied for the storage/release of low-temperature latent heat and thermal management. However, they have serious liquid leakage and poor thermal conductivity, which greatly restrict their practical application. Al...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-11-01
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| Series: | Energy Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722009659 |
| _version_ | 1828011065361825792 |
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| author | Qianwen Dong Bing Sun Zhijun Dong Yongsheng Tian Hui Zhu Guanming Yuan Ye Cong Baoliu Li Jianguang Guo Xuanke Li |
| author_facet | Qianwen Dong Bing Sun Zhijun Dong Yongsheng Tian Hui Zhu Guanming Yuan Ye Cong Baoliu Li Jianguang Guo Xuanke Li |
| author_sort | Qianwen Dong |
| collection | DOAJ |
| description | Paraffin waxes (PW) are organic phase change materials (PCMs) that can be potentially applied for the storage/release of low-temperature latent heat and thermal management. However, they have serious liquid leakage and poor thermal conductivity, which greatly restrict their practical application. Although numerous studies have been conducted to address these problems, it is challenging to achieve phase change composites (PCCs) that are characterized by high thermal conductivity and excellent phase change behavior. Herein, we put forward a novel strategy for preparing expanded graphite (EG)/PW binary PCCs with EG loading varying in the range of 10–40 wt%. The method is developed by constructing graphite sheets with high orientation inside the PCCs following compression induction. The highly oriented graphite sheets provide channels for highly efficient heat transfer, which significantly improves the thermal conductivity of the resulting EG/PW PCCs. The in-plane thermal conductivities of the EG/PW PCCs are in the range of 10.7–49.7 W m−1 K−1 under 10–40 wt% EG loading conditions, much larger than those of the previously reported EG/PW PCCs with the same EG content. The EG/PW composites also exhibit excellent compatibility, uniformity, thermostability, reliability, and phase change behaviors. These remarkable properties make the EG/PW composites promising for application in thermal management and heat storage. This work provides an efficient and generic strategy for designing and constructing high-efficiency heat transfer channels within the PCCs using sheet-shaped fillers with high thermal conductivity. |
| first_indexed | 2024-04-10T09:09:36Z |
| format | Article |
| id | doaj.art-1e787283983449cebb16ed6bfe9b2698 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-10T09:09:36Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-1e787283983449cebb16ed6bfe9b26982023-02-21T05:11:43ZengElsevierEnergy Reports2352-48472022-11-01870717084Construction of highly efficient heat conduction channels within expanded graphite/paraffin phase change composites and their thermophysical propertiesQianwen Dong0Bing Sun1Zhijun Dong2Yongsheng Tian3Hui Zhu4Guanming Yuan5Ye Cong6Baoliu Li7Jianguang Guo8Xuanke Li9Hubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR China; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR ChinaHubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR ChinaHubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR China; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR China; Correspondence to: 947 Heping Avenue, Qingshan District, Wuhan 430081, Hubei, PR China.Hubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR ChinaHubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR China; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR ChinaHubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR China; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR ChinaHubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR China; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR ChinaHubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR ChinaHubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR ChinaHubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei 430081, PR China; Correspondence to: 947 Heping Avenue, Qingshan District, Wuhan 430081, Hubei, PR China.Paraffin waxes (PW) are organic phase change materials (PCMs) that can be potentially applied for the storage/release of low-temperature latent heat and thermal management. However, they have serious liquid leakage and poor thermal conductivity, which greatly restrict their practical application. Although numerous studies have been conducted to address these problems, it is challenging to achieve phase change composites (PCCs) that are characterized by high thermal conductivity and excellent phase change behavior. Herein, we put forward a novel strategy for preparing expanded graphite (EG)/PW binary PCCs with EG loading varying in the range of 10–40 wt%. The method is developed by constructing graphite sheets with high orientation inside the PCCs following compression induction. The highly oriented graphite sheets provide channels for highly efficient heat transfer, which significantly improves the thermal conductivity of the resulting EG/PW PCCs. The in-plane thermal conductivities of the EG/PW PCCs are in the range of 10.7–49.7 W m−1 K−1 under 10–40 wt% EG loading conditions, much larger than those of the previously reported EG/PW PCCs with the same EG content. The EG/PW composites also exhibit excellent compatibility, uniformity, thermostability, reliability, and phase change behaviors. These remarkable properties make the EG/PW composites promising for application in thermal management and heat storage. This work provides an efficient and generic strategy for designing and constructing high-efficiency heat transfer channels within the PCCs using sheet-shaped fillers with high thermal conductivity.http://www.sciencedirect.com/science/article/pii/S2352484722009659Phase change compositesThermal energy storageHeat transferThermal conductivityExpanded graphite |
| spellingShingle | Qianwen Dong Bing Sun Zhijun Dong Yongsheng Tian Hui Zhu Guanming Yuan Ye Cong Baoliu Li Jianguang Guo Xuanke Li Construction of highly efficient heat conduction channels within expanded graphite/paraffin phase change composites and their thermophysical properties Energy Reports Phase change composites Thermal energy storage Heat transfer Thermal conductivity Expanded graphite |
| title | Construction of highly efficient heat conduction channels within expanded graphite/paraffin phase change composites and their thermophysical properties |
| title_full | Construction of highly efficient heat conduction channels within expanded graphite/paraffin phase change composites and their thermophysical properties |
| title_fullStr | Construction of highly efficient heat conduction channels within expanded graphite/paraffin phase change composites and their thermophysical properties |
| title_full_unstemmed | Construction of highly efficient heat conduction channels within expanded graphite/paraffin phase change composites and their thermophysical properties |
| title_short | Construction of highly efficient heat conduction channels within expanded graphite/paraffin phase change composites and their thermophysical properties |
| title_sort | construction of highly efficient heat conduction channels within expanded graphite paraffin phase change composites and their thermophysical properties |
| topic | Phase change composites Thermal energy storage Heat transfer Thermal conductivity Expanded graphite |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722009659 |
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