Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material
This study evaluates the concept of developing a nondeform phase-change energy storage material possessing higher thermal conductivity and energy storage density through a pressure compaction process. The theoretical and experimental investigations have shown that the technique is able to reduce por...
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| Format: | Article |
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American Institute of Aeronautics and Astronautics
2015
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| Online Access: | https://eprints.nottingham.ac.uk/47493/ |
| _version_ | 1848797560880234496 |
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| author | Darkwa, Jo Su, O. Zhou, T. |
| author_facet | Darkwa, Jo Su, O. Zhou, T. |
| author_sort | Darkwa, Jo |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | This study evaluates the concept of developing a nondeform phase-change energy storage material possessing higher thermal conductivity and energy storage density through a pressure compaction process. The theoretical and experimental investigations have shown that the technique is able to reduce porosity and increase conductivity and energy storage density of a composite material. Even though there was some measure of plastoelasticity due to decompression, the average porosity was reduced from 62 to 23.8% at a relatively low compaction pressure of 2.8 MPa without any structural damage to the tested sample. The mean energy storage density increased by 97%, and the effective thermal conductivity also increased by 25 times, despite a 10% reduction in its latent heat capacity. There is, however, the need for further development toward minimizing the effect of decompression and achieving stronger energy storage tablets at a relatively low compaction force. |
| first_indexed | 2025-11-14T20:05:49Z |
| format | Article |
| id | nottingham-47493 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:05:49Z |
| publishDate | 2015 |
| publisher | American Institute of Aeronautics and Astronautics |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-474932020-05-04T17:05:39Z https://eprints.nottingham.ac.uk/47493/ Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material Darkwa, Jo Su, O. Zhou, T. This study evaluates the concept of developing a nondeform phase-change energy storage material possessing higher thermal conductivity and energy storage density through a pressure compaction process. The theoretical and experimental investigations have shown that the technique is able to reduce porosity and increase conductivity and energy storage density of a composite material. Even though there was some measure of plastoelasticity due to decompression, the average porosity was reduced from 62 to 23.8% at a relatively low compaction pressure of 2.8 MPa without any structural damage to the tested sample. The mean energy storage density increased by 97%, and the effective thermal conductivity also increased by 25 times, despite a 10% reduction in its latent heat capacity. There is, however, the need for further development toward minimizing the effect of decompression and achieving stronger energy storage tablets at a relatively low compaction force. American Institute of Aeronautics and Astronautics 2015-04-30 Article PeerReviewed Darkwa, Jo, Su, O. and Zhou, T. (2015) Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material. Journal of Thermophysics and Heat Transfer, 29 (2). pp. 291-296. ISSN 1533-6808 Phase change material; Non-deformed; Tablet; Energy storage density https://doi.org/10.2514/1.T3911 doi:10.2514/1.T3911 doi:10.2514/1.T3911 |
| spellingShingle | Phase change material; Non-deformed; Tablet; Energy storage density Darkwa, Jo Su, O. Zhou, T. Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material |
| title | Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material |
| title_full | Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material |
| title_fullStr | Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material |
| title_full_unstemmed | Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material |
| title_short | Evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material |
| title_sort | evaluation of thermal energy dynamics in a compacted high-conductivity phase-change material |
| topic | Phase change material; Non-deformed; Tablet; Energy storage density |
| url | https://eprints.nottingham.ac.uk/47493/ https://eprints.nottingham.ac.uk/47493/ https://eprints.nottingham.ac.uk/47493/ |