Hydrogen Energy Storage System: How does the semi-cylindrical helical coil heat exchanger affect metal hydride beds' thermal conductivity?

Larpruenrudee, P; Bennett, NS; Hossain, J; Fitch, R; Islam, MS

Hydrogen Energy Storage System: How does the semi-cylindrical helical coil heat exchanger affect metal hydride beds' thermal conductivity?

Larpruenrudee, P

Bennett, NS Hossain, J Fitch, R Islam, MS

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Publication Type:: Conference Proceeding
Citation:: 2022
Issue Date:: 2022-12-04

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Field	Value	Language
dc.contributor.author	Larpruenrudee, P https://orcid.org/0000-0002-3413-3667
dc.contributor.author	Bennett, NS
dc.contributor.author	Hossain, J
dc.contributor.author	Fitch, R
dc.contributor.author	Islam, MS
dc.date	2022-12-04
dc.date.accessioned	2023-01-31T07:47:30Z
dc.date.available	2023-01-31T07:47:30Z
dc.date.issued	2022-12-04
dc.identifier.citation	2022
dc.identifier.issn	2653-0597
dc.identifier.uri	http://hdl.handle.net/10453/165691
dc.description.abstract	Metal hydride (MH) is classified as one of the solid material storage technologies for hydrogen storage. This material has been recently used worldwide because of its ability to provide a large hydrogen storage capacity, low operating pressure and high safety. However, the disadvantage of this material is having low thermal conductivity, which leads to it having a slow hydrogen absorption time. For the absorption process, faster heat removal from the MH storage will result in faster absorption. Therefore, enhancing heat transfer performance is one of the most effective ways to improve storage performance. This paper aims to improve the heat transfer performance by employing a semi-cylindrical coil as a heat exchanger embedded inside the storage material. Air is used as the heat transfer fluid (HTF). A comparison of the hydrogen absorption duration and the bed temperature between the semi-cylindrical coil heat exchanger (SCHE) and the traditional helical coil heat exchanger (HCHE) has been made to investigate the effect of heat exchanger configuration designs. These two configurations are designed based on the constant volume of the heat exchanger tube and metal hydride. The numerical simulations are performed by using ANSYS Fluent 2020 R2. The results from this study indicate that the average bed temperature inside the storage by using SCHE is reduced faster than using HCHE, which leads to having a faster hydrogen absorption, approximately 59% time reduction. The key finding from this study could be an important enabler for industrial applications.
dc.language	en
dc.relation.ispartof	Australasian Fluid Mechanics Conference
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Hydrogen Energy Storage System: How does the semi-cylindrical helical coil heat exchanger affect metal hydride beds' thermal conductivity?
dc.type	Conference Proceeding
utslib.location.activity	Sydney, Australia
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2023-01-31T07:47:29Z
pubs.finish-date	2022-12-08
pubs.publication-status	Published online
pubs.start-date	2022-12-04

Abstract:

Metal hydride (MH) is classified as one of the solid material storage technologies for hydrogen storage. This material has been recently used worldwide because of its ability to provide a large hydrogen storage capacity, low operating pressure and high safety. However, the disadvantage of this material is having low thermal conductivity, which leads to it having a slow hydrogen absorption time. For the absorption process, faster heat removal from the MH storage will result in faster absorption. Therefore, enhancing heat transfer performance is one of the most effective ways to improve storage performance. This paper aims to improve the heat transfer performance by employing a semi-cylindrical coil as a heat exchanger embedded inside the storage material. Air is used as the heat transfer fluid (HTF). A comparison of the hydrogen absorption duration and the bed temperature between the semi-cylindrical coil heat exchanger (SCHE) and the traditional helical coil heat exchanger (HCHE) has been made to investigate the effect of heat exchanger configuration designs. These two configurations are designed based on the constant volume of the heat exchanger tube and metal hydride. The numerical simulations are performed by using ANSYS Fluent 2020 R2. The results from this study indicate that the average bed temperature inside the storage by using SCHE is reduced faster than using HCHE, which leads to having a faster hydrogen absorption, approximately 59% time reduction. The key finding from this study could be an important enabler for industrial applications.

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http://hdl.handle.net/10453/165691