A thermal energy storage prototype using sodium magnesium hydride
© The Royal Society of Chemistry. Metal hydrides present favourable thermal storage properties particularly due to their high energy density during thermochemical hydrogenation. For this purpose, sodium magnesium hydride (NaMgH3) has shown promising qualities that could lead to an industrialised...
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| Format: | Journal Article |
| Language: | English |
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ROYAL SOC CHEMISTRY
2019
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| Online Access: | http://purl.org/au-research/grants/arc/LP120101848 http://hdl.handle.net/20.500.11937/82098 |
| _version_ | 1848764474155073536 |
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| author | Poupin, L. Humphries, Terry Paskevicius, Mark Buckley, Craig |
| author_facet | Poupin, L. Humphries, Terry Paskevicius, Mark Buckley, Craig |
| author_sort | Poupin, L. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © The Royal Society of Chemistry.
Metal hydrides present favourable thermal storage properties particularly due to their high energy density during thermochemical hydrogenation. For this purpose, sodium magnesium hydride (NaMgH3) has shown promising qualities that could lead to an industrialised application, but first requires to be examined on a lab-scale under realistic operating conditions. Herein, the cycling reversibility of NaMgH3 is undertaken on a 150 g scale with active heat extraction and delivery using superheated water vapour as the heat transfer fluid. The thermal and cycling properties of the hydride material are enhanced by addition of TiB2 and exfoliated natural graphite. Over 40 cycles the NaMgH3 showed minimal loss in capacity, but revealed difficulties in terms of thermal management to avoid local overheating, resulting in the production of undesired molten sodium metal. The temperature cycling showed a hydrogen flow culminating at 1 g h−1, which was insufficient to ensure thermal energy retrieval. The increase of the inlet hydrogen pressure has been shown to be instrumental in achieving an acceptable flow rate of 10 g h−1. Indeed, this design, despite high heat losses to the environment, was able to supply a third of the chemical energy available to the heat transfer fluid. |
| first_indexed | 2025-11-14T11:19:56Z |
| format | Journal Article |
| id | curtin-20.500.11937-82098 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:19:56Z |
| publishDate | 2019 |
| publisher | ROYAL SOC CHEMISTRY |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-820982021-02-16T02:44:01Z A thermal energy storage prototype using sodium magnesium hydride Poupin, L. Humphries, Terry Paskevicius, Mark Buckley, Craig Science & Technology Physical Sciences Technology Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Materials Science PEROVSKITE-TYPE HYDRIDE DEHYDRIDING PROPERTIES METAL HEAT NAMGH3 PERFORMANCE SYSTEMS THERMODYNAMICS CONDUCTIVITY OPTIMIZATION © The Royal Society of Chemistry. Metal hydrides present favourable thermal storage properties particularly due to their high energy density during thermochemical hydrogenation. For this purpose, sodium magnesium hydride (NaMgH3) has shown promising qualities that could lead to an industrialised application, but first requires to be examined on a lab-scale under realistic operating conditions. Herein, the cycling reversibility of NaMgH3 is undertaken on a 150 g scale with active heat extraction and delivery using superheated water vapour as the heat transfer fluid. The thermal and cycling properties of the hydride material are enhanced by addition of TiB2 and exfoliated natural graphite. Over 40 cycles the NaMgH3 showed minimal loss in capacity, but revealed difficulties in terms of thermal management to avoid local overheating, resulting in the production of undesired molten sodium metal. The temperature cycling showed a hydrogen flow culminating at 1 g h−1, which was insufficient to ensure thermal energy retrieval. The increase of the inlet hydrogen pressure has been shown to be instrumental in achieving an acceptable flow rate of 10 g h−1. Indeed, this design, despite high heat losses to the environment, was able to supply a third of the chemical energy available to the heat transfer fluid. 2019 Journal Article http://hdl.handle.net/20.500.11937/82098 10.1039/C8SE00596F English http://purl.org/au-research/grants/arc/LP120101848 http://purl.org/au-research/grants/arc/LP150100730 http://purl.org/au-research/grants/arc/LE0989180 http://purl.org/au-research/grants/arc/LE0775551 http://purl.org/au-research/grants/arc/FT160100303 ROYAL SOC CHEMISTRY fulltext |
| spellingShingle | Science & Technology Physical Sciences Technology Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Materials Science PEROVSKITE-TYPE HYDRIDE DEHYDRIDING PROPERTIES METAL HEAT NAMGH3 PERFORMANCE SYSTEMS THERMODYNAMICS CONDUCTIVITY OPTIMIZATION Poupin, L. Humphries, Terry Paskevicius, Mark Buckley, Craig A thermal energy storage prototype using sodium magnesium hydride |
| title | A thermal energy storage prototype using sodium magnesium hydride |
| title_full | A thermal energy storage prototype using sodium magnesium hydride |
| title_fullStr | A thermal energy storage prototype using sodium magnesium hydride |
| title_full_unstemmed | A thermal energy storage prototype using sodium magnesium hydride |
| title_short | A thermal energy storage prototype using sodium magnesium hydride |
| title_sort | thermal energy storage prototype using sodium magnesium hydride |
| topic | Science & Technology Physical Sciences Technology Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Materials Science PEROVSKITE-TYPE HYDRIDE DEHYDRIDING PROPERTIES METAL HEAT NAMGH3 PERFORMANCE SYSTEMS THERMODYNAMICS CONDUCTIVITY OPTIMIZATION |
| url | http://purl.org/au-research/grants/arc/LP120101848 http://purl.org/au-research/grants/arc/LP120101848 http://purl.org/au-research/grants/arc/LP120101848 http://purl.org/au-research/grants/arc/LP120101848 http://purl.org/au-research/grants/arc/LP120101848 http://hdl.handle.net/20.500.11937/82098 |