Heat management on rectangular metal hydride tanks for green building applications

Evangelos Gkanas; Thomas Statheros; Martin Khzouz

doi:10.1016/j.ijhydene.2018.06.030

Heat management on rectangular metal hydride tanks for green building applications

Evangelos Gkanas, Thomas Statheros, Martin Khzouz

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

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Abstract

A numerical study fully validated with solid experimental results is presented and analysed, regarding the hydrogenation process of rectangular metal hydride tanks for green building applications. Based on a previous study conducted by the authors, where the effective heat management of rectangular tanks by using plain embedded cooling tubes was analysed, in the current work the importance of using extended surfaces to enhance the thermal properties and the hydrogenation kinetics is analysed. The studied extended surfaces (fins) were of rectangular shape; and several combinations regarding the number of fins and the fin thickness were examined and analysed. The values for fin thickness were 2-3-5 and 8 mm and the number of fins studied were 10-14-18 and 20. To evaluate the effect of the heat management process, a modified version of a variable named as Non-Dimensional Conductance (NDC) is introduced and studied. A novel AB2-Laves phase intermetallic was considered as the metal hydride for the study. The results of the hydrogenation behaviour for the introduced parameters (fin number and thickness) showed that the rectangular tank equipped with the cooling tubes in combination with 14 fins of 5 mm fin thickness has the capability of storing hydrogen over 90% of its theoretical capacity in less than 30 min.

Original language	English
Pages (from-to)	19267-19274
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	44
Issue number	35
Early online date	28 Jun 2018
DOIs	https://doi.org/10.1016/j.ijhydene.2018.06.030
Publication status	Published - 19 Jul 2019

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, Vol. (In-Press). pp. (In-Press),2018. DOI: 10.1016/j.ijhydene.2018.06.030

© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

Extended surfaces
Green buildings
Heat and mass transfer
Heat management
Hydrogen storage

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

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

Access to Document

10.1016/j.ijhydene.2018.06.030

Post-PrintAccepted author manuscript, 880 KBLicence: CC BY-NC-ND

Cite this

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title = "Heat management on rectangular metal hydride tanks for green building applications",

abstract = "A numerical study fully validated with solid experimental results is presented and analysed, regarding the hydrogenation process of rectangular metal hydride tanks for green building applications. Based on a previous study conducted by the authors, where the effective heat management of rectangular tanks by using plain embedded cooling tubes was analysed, in the current work the importance of using extended surfaces to enhance the thermal properties and the hydrogenation kinetics is analysed. The studied extended surfaces (fins) were of rectangular shape; and several combinations regarding the number of fins and the fin thickness were examined and analysed. The values for fin thickness were 2-3-5 and 8 mm and the number of fins studied were 10-14-18 and 20. To evaluate the effect of the heat management process, a modified version of a variable named as Non-Dimensional Conductance (NDC) is introduced and studied. A novel AB2-Laves phase intermetallic was considered as the metal hydride for the study. The results of the hydrogenation behaviour for the introduced parameters (fin number and thickness) showed that the rectangular tank equipped with the cooling tubes in combination with 14 fins of 5 mm fin thickness has the capability of storing hydrogen over 90% of its theoretical capacity in less than 30 min.",

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author = "Evangelos Gkanas and Thomas Statheros and Martin Khzouz",

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AU - Gkanas, Evangelos

AU - Statheros, Thomas

AU - Khzouz, Martin

N1 - NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, Vol. (In-Press). pp. (In-Press),2018. DOI: 10.1016/j.ijhydene.2018.06.030 © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

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ER -

Heat management on rectangular metal hydride tanks for green building applications

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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Thomas Statheros

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Heat management on rectangular metal hydride tanks for green building applications

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

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Thomas Statheros

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