Thermal modeling of LmNi 4.91 Sn 0.15 based solid state hydrogen storage device with embedded cooling tubes

Anbarasu, S.; Muthukumar, P.; Mishra, Subhash C.

doi:10.1016/j.ijhydene.2014.07.088

Cited by 68 publications

(17 citation statements)

References 29 publications

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“…The total length of the reactor was 400 mm and the internal radius was 52.55 mm, resulting in an internal volume of 3.44 10 -3 m 3 . For the first scenario the arrangements of the 18/24/30/36/48/60 embedded cooling/heating heat exchangers, similar to those used by Anbarasu et al [10], are presented in Fig 2. …”

Section: Tank Design Geometriesmentioning

confidence: 99%

“…The thermal management of a metal hydride reactor must take into account both the cooling during the hydrogenation process heating during the dehydrogenation process. Two active heat management techniques can be employed to accomplish this, internal heat management and external heat transfer [10,11]. Heat exchangers are used in many industrial applications the most widely used being those intended to exchange heat between two fluids.…”

Section: Introductionmentioning

confidence: 99%

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Efficient hydrogen storage in up-scale metal hydride tanks as possible metal hydride compression agents equipped with aluminium extended surfaces

Gkanas

Grant

Khzouz

et al. 2016

International Journal of Hydrogen Energy

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The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractIn the current work, a three-dimensional computational study regarding coupled heat and mass transfer during both the hydrogenation and dehydrogenation process in upscale cylindrical metal hydride reactors is presented, analysed and optimized. Three different heat management scenarios were examined at the degree to which they provide improved system performance. The three scenarios were: 1) Plain embedded cooling/heating tubes, 2) transverse finned tubes and 3) longitudinal finned tubes. A detailed optimization study was presented leading to the selection of the optimized geometries. In addition, two different types of hydrides, LaNi5 and an AB2-type intermetallic were studied as possible candidate materials for using as the first stage alloys in a two-stage metal hydride hydrogen compression system. As extracted from the above results, it is clear that the case of using a vessel equipped with 16 longitudinal finned tubes is the most efficient way to enhance the hydrogenation kinetics when using both LaNi5 and the AB2-alloy as the hydride agents. When using LaNi5 as the operating hydride the case of the vessel equipped with 60 embedded cooling tubes presents the same kinetic behaviour with the case of the vessel equipped with 12 longitudinal finned tubes, so in that way, by using extended surfaces to enhance the heat exchange can reduce the total number of tubes from 60 to 12. For the case of using the AB2-type material as the operating hydride the performance of the extended surfaces is more dominant and more effective comparing to the case of using the embedded tubes, especially for the case of the longitudinal extended surfaces.

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Section: Tank Design Geometriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient hydrogen storage in up-scale metal hydride tanks as possible metal hydride compression agents equipped with aluminium extended surfaces

Gkanas

Grant

Khzouz

et al. 2016

International Journal of Hydrogen Energy

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show abstract

“…By this design the number of tubes decreased compared to other system models [27] to decrease its complexity and building cost using to do it a previous analysis about the efficiency of diameter and disposition of the piping system [28].…”

Section: Bed and Storage System Designmentioning

confidence: 99%

“…By this media was determined an increase in hydrogen storage capacity and the amount of hydrogen desorbed along the absorption and desorption time respectively by the implementation of a high number of coolant tubes [28], but at the end of the process, the same quantity is absorbed and desorbed by metal hydride bed.…”

Section: Bed and Storage System Designmentioning

confidence: 99%

Modeling of cooling system for hydrogen storage process with sodium alanate and catalyzed by titanium chloride

Parra-Santiago

Guerrero-Fajardo

2015

International Journal of Hydrogen Energy

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“…Anbarasu et al [19] conducted many test experiments on two metal hydride based solid state hydrogen storage devices with 36 and 60 embedded cooling tubes employing the LmNi 4.91 Sn 0.15 alloy. Absorption performances of the studied storage devices were studied for different supply pressures, absorption temperatures and cooling fluid flow rates.…”

Section: Introductionmentioning

confidence: 99%

Numerical heat and mass transfer investigation of hydrogen absorption in an annulus-disc reactor

Boukhari¹,

Bessaïh²

2015

International Journal of Hydrogen Energy

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Thermal modeling of LmNi 4.91 Sn 0.15 based solid state hydrogen storage device with embedded cooling tubes

Cited by 68 publications

References 29 publications

Efficient hydrogen storage in up-scale metal hydride tanks as possible metal hydride compression agents equipped with aluminium extended surfaces

Efficient hydrogen storage in up-scale metal hydride tanks as possible metal hydride compression agents equipped with aluminium extended surfaces

Modeling of cooling system for hydrogen storage process with sodium alanate and catalyzed by titanium chloride

Numerical heat and mass transfer investigation of hydrogen absorption in an annulus-disc reactor

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