Hydrogenation behavior in rectangular metal hydride tanks under effective heat management processes for green building applications

Evangelos Gkanas; Martin Khzouz; Grigorios  Panagakos; Thomas Statheros; Panagiota Mihalakakou; Gerasimos I. Siasos; Georgios Skodras; Sofoklis S. Makridis

doi:10.1016/j.energy.2017.10.040

Hydrogenation behavior in rectangular metal hydride tanks under effective heat management processes for green building applications

Evangelos Gkanas, Martin Khzouz, Grigorios Panagakos, Thomas Statheros, Panagiota Mihalakakou, Gerasimos I. Siasos, Georgios Skodras, Sofoklis S. Makridis

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Abstract

A fully validated with solid experimental results numerical study regarding the hydrogenation process of rectangular metal hydride beds under effective internal heat management is presented and analysed. Three different geometries equipped with plain embedded heat management tubes are introduced and examined. For each geometry, five different values of metal hydride thickness are studied and additionally, the effect of the coolant flow is examined in terms of different values of heat transfer coefficient [W/m2K]. To evaluate the effect of the heat management process, a variable named as Non-Dimensional Conductance (NDC) is analysed and studied. Furthermore, three different materials are introduced, two “conventional” AB5 intermetallics and a novel AB2-based Laves phase intermetallic. According to the results, the optimum value for the metal hydride thickness was found to be 10.39 mm, while the optimum value for the heat transfer coefficient was 2000 [W/m2K]. For the above optimum conditions, the performance of the novel AB2-based Laves phase intermetallic showed the fastest hydrogenation kinetics compared to the other two AB5 intermetallics indicating that is a powerful storage material for stationary applications.

Original language	English
Pages (from-to)	518-530
Number of pages	13
Journal	Energy
Volume	142
Early online date	10 Oct 2017
DOIs	https://doi.org/10.1016/j.energy.2017.10.040
Publication status	Published - 1 Jan 2018

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in 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 Energy, [(in press), (2017)] DOI: 10.1016/j.energy.2017.10.040

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

Keywords

Hydrogen storage
Heat management
Stationary applications
Heat and mass transfer
Green buildings

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10.1016/j.energy.2017.10.040

Post-PrintAccepted author manuscript, 3.33 MBLicence: CC BY-NC-ND

Thomas Statheros
- Centre for Future Transport and Cities - Assistant Professor (Research)
Person: Teaching and Research

Cite this

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title = "Hydrogenation behavior in rectangular metal hydride tanks under effective heat management processes for green building applications",

abstract = "A fully validated with solid experimental results numerical study regarding the hydrogenation process of rectangular metal hydride beds under effective internal heat management is presented and analysed. Three different geometries equipped with plain embedded heat management tubes are introduced and examined. For each geometry, five different values of metal hydride thickness are studied and additionally, the effect of the coolant flow is examined in terms of different values of heat transfer coefficient [W/m2K]. To evaluate the effect of the heat management process, a variable named as Non-Dimensional Conductance (NDC) is analysed and studied. Furthermore, three different materials are introduced, two “conventional” AB5 intermetallics and a novel AB2-based Laves phase intermetallic. According to the results, the optimum value for the metal hydride thickness was found to be 10.39 mm, while the optimum value for the heat transfer coefficient was 2000 [W/m2K]. For the above optimum conditions, the performance of the novel AB2-based Laves phase intermetallic showed the fastest hydrogenation kinetics compared to the other two AB5 intermetallics indicating that is a powerful storage material for stationary applications.",

keywords = "Hydrogen storage, Heat management, Stationary applications, Heat and mass transfer, Green buildings",

author = "Evangelos Gkanas and Martin Khzouz and Grigorios Panagakos and Thomas Statheros and Panagiota Mihalakakou and Siasos, {Gerasimos I.} and Georgios Skodras and Makridis, {Sofoklis S.}",

note = "NOTICE: this is the author{\textquoteright}s version of a work that was accepted for publication in 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 Energy, [(in press), (2017)] DOI: 10.1016/j.energy.2017.10.040 {\textcopyright} 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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doi = "10.1016/j.energy.2017.10.040",

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T1 - Hydrogenation behavior in rectangular metal hydride tanks under effective heat management processes for green building applications

AU - Gkanas, Evangelos

AU - Khzouz, Martin

AU - Panagakos, Grigorios

AU - Statheros, Thomas

AU - Mihalakakou, Panagiota

AU - Siasos, Gerasimos I.

AU - Skodras, Georgios

AU - Makridis, Sofoklis S.

N1 - NOTICE: this is the author’s version of a work that was accepted for publication in 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 Energy, [(in press), (2017)] DOI: 10.1016/j.energy.2017.10.040 © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

PY - 2018/1/1

Y1 - 2018/1/1

N2 - A fully validated with solid experimental results numerical study regarding the hydrogenation process of rectangular metal hydride beds under effective internal heat management is presented and analysed. Three different geometries equipped with plain embedded heat management tubes are introduced and examined. For each geometry, five different values of metal hydride thickness are studied and additionally, the effect of the coolant flow is examined in terms of different values of heat transfer coefficient [W/m2K]. To evaluate the effect of the heat management process, a variable named as Non-Dimensional Conductance (NDC) is analysed and studied. Furthermore, three different materials are introduced, two “conventional” AB5 intermetallics and a novel AB2-based Laves phase intermetallic. According to the results, the optimum value for the metal hydride thickness was found to be 10.39 mm, while the optimum value for the heat transfer coefficient was 2000 [W/m2K]. For the above optimum conditions, the performance of the novel AB2-based Laves phase intermetallic showed the fastest hydrogenation kinetics compared to the other two AB5 intermetallics indicating that is a powerful storage material for stationary applications.

AB - A fully validated with solid experimental results numerical study regarding the hydrogenation process of rectangular metal hydride beds under effective internal heat management is presented and analysed. Three different geometries equipped with plain embedded heat management tubes are introduced and examined. For each geometry, five different values of metal hydride thickness are studied and additionally, the effect of the coolant flow is examined in terms of different values of heat transfer coefficient [W/m2K]. To evaluate the effect of the heat management process, a variable named as Non-Dimensional Conductance (NDC) is analysed and studied. Furthermore, three different materials are introduced, two “conventional” AB5 intermetallics and a novel AB2-based Laves phase intermetallic. According to the results, the optimum value for the metal hydride thickness was found to be 10.39 mm, while the optimum value for the heat transfer coefficient was 2000 [W/m2K]. For the above optimum conditions, the performance of the novel AB2-based Laves phase intermetallic showed the fastest hydrogenation kinetics compared to the other two AB5 intermetallics indicating that is a powerful storage material for stationary applications.

KW - Hydrogen storage

KW - Heat management

KW - Stationary applications

KW - Heat and mass transfer

KW - Green buildings

U2 - 10.1016/j.energy.2017.10.040

DO - 10.1016/j.energy.2017.10.040

M3 - Article

SN - 0360-5442

SN - 1873-6785

VL - 142

SP - 518

EP - 530

JO - Energy

JF - Energy

ER -

Hydrogenation behavior in rectangular metal hydride tanks under effective heat management processes for green building applications

Abstract

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Keywords

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