LAPSE:2022.0105
Published Article
LAPSE:2022.0105
Analysis of the Heat Balance of a Metal Hydride Separator Used for the Separation of Hydrogen from Syngas
Tomáš Brestovič, Marián Lázár, Natália Jasminská, Jozef Živčák, Lukáš Tóth, Romana Dobáková, Filip Duda, Ľubomíra Kmeťová, Ľubomíra Bednárová
October 30, 2022
The present article discusses the potential for hydrogen separation using a metal hydride separator, which facilitates the generation of hydrogen contained in syngas following the thermal recovery of wastes. The article provides a detailed description of the separator heat balance using analytical calculations and optimised calculations, and by applying numerical methods. The proposed concept of a separator intended for hydrogen separation from syngas offers a solution to a problem associated with the use of metal hydride alloy powders; in particular, their low thermal conductivity. In order to eliminate big temperature differences in the alloy, a heat transfer intensifier was implemented in the metal hydride alloy volume; the intensifier was made of metal and exhibited high thermal conductivity. For the purpose of comparing the thermal fields, the first stage comprised the creation of a numerical simulation of hydrogen absorption without the use of an intensifier. Subsequently, three different geometries were created for an intensifier intended to remove heat from the metal hydride alloy powder towards the separator cover, and the effects of these three geometries were analysed. The implementation of heat transfer intensifiers into the metal hydride alloy powder improved the heat removal by as much as 43.9% and increased the thermal field homogeneity by 77%. A result of the heat removal optimisation was an increase in the hydrogen absorption kinetics and the efficiency of the separator operation.
Keywords
Energy, heat exchanger, modelling and simulation
Suggested Citation
Brestovič T, Lázár M, Jasminská N, Živčák J, Tóth L, Dobáková R, Duda F, Kmeťová Ľ, Bednárová Ľ. Analysis of the Heat Balance of a Metal Hydride Separator Used for the Separation of Hydrogen from Syngas. (2022). LAPSE:2022.0105
Author Affiliations
Brestovič T: Faculty of Mechanical Engineering, Technical University of Košice, 04200 Košice, Slovakia
Lázár M: Faculty of Mechanical Engineering, Technical University of Košice, 04200 Košice, Slovakia [ORCID]
Jasminská N: Faculty of Mechanical Engineering, Technical University of Košice, 04200 Košice, Slovakia
Živčák J: Faculty of Mechanical Engineering, Technical University of Košice, 04200 Košice, Slovakia
Tóth L: Faculty of Mechanical Engineering, Technical University of Košice, 04200 Košice, Slovakia
Dobáková R: Faculty of Mechanical Engineering, Technical University of Košice, 04200 Košice, Slovakia
Duda F: Faculty of Mechanical Engineering, Technical University of Košice, 04200 Košice, Slovakia
Kmeťová Ľ: Faculty of Mechanical Engineering, Technical University of Košice, 04200 Košice, Slovakia
Bednárová Ľ: Faculty of Mechanical Engineering, Technical University of Košice, 04200 Košice, Slovakia
Journal Name
Processes
Volume
9
Issue
2
First Page
251
Year
2021
Publication Date
2021-01-29
Published Version
ISSN
2227-9717
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Original Submission
Other Meta
PII: pr9020251, Publication Type: Journal Article
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LAPSE:2022.0105
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doi:10.3390/pr9020251
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Oct 30, 2022
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CC BY 4.0
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[v1] (Original Submission)
Oct 30, 2022
 
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Oct 30, 2022
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Original Submitter
Mina Naeini
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