Large scale magnesium hydride tank coupled with an external heat source

Delhomme, Baptiste; Rango, Patricia de; Marty, Pascal; Bacia, Maria; Zawilski, Bartosz; Raufast, Cécile; Miraglia, S.; Fruchart, D.

doi:10.1016/j.ijhydene.2012.03.018

Cited by 88 publications

(29 citation statements)

References 18 publications

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“…However, the incorporation of a Ni dopant or Fe (to form Mg 2 FeH 6 ) results in a very stable capacity over 500 cycles with no drop in performance [13]. A similar result was found in a 10 kg MgH 2 tank, doped with graphite and a TieVeCr alloy, where only a 2% drop in capacity is noted after 600 cycles [34].…”

Section: Introductionmentioning

confidence: 67%

Metal hydride thermal heat storage prototype for concentrating solar thermal power

Paskevicius

Sheppard

Williamson

et al. 2015

Energy

132

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Section: Introductionmentioning

confidence: 67%

Metal hydride thermal heat storage prototype for concentrating solar thermal power

Paskevicius

Sheppard

Williamson

et al. 2015

Energy

132

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“…The temperature of the desorption process was assumed to be 100 K above the respective equilibrium temperature (refer to Eqn (2)) because the desorption of metal hydride systems is in practice performed at temperatures remarkably higher than the respective equilibrium temperature because of kinetic issues. In the base case, this results in a temperature of 325°C, which is in the range of practical [30][31][32]37]. In the sensitivity analysis performed, the desorption temperature and pressure are varied in a wide range to cover a variety of possible operation conditions and to show the influence of these conditions.…”

Section: Parameter Overviewmentioning

confidence: 99%

Energetic evaluation of hydrogen storage in metal hydrides

Adametz

Müller

Arlt

2016

Int. J. Energy Res.

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Summary Metal hydrides are considered as promising candidates for hydrogen storage as they exhibit higher energy densities than compressed gas storage storages. This study represents a theoretical thermodynamic analysis of metal hydride‐based hydrogen storage systems, focusing mainly on the energy demand to operate the storage system and the resulting efficiency. The main energy demand occurs during hydrogen release. This energy demand is composed of three contributions: the heat required to heat the hydride up to desorption temperature, the heat of reaction and the work of compression to reach the targeted outlet pressure. A sensitivity analysis was performed to demonstrate the impact of several parameters, for example, heat of reaction and hydrogen uptake on the energy balance. The most influential parameter is the heat of reaction. The hydrogen uptake does not have a noticeable influence as long as it is not too low. Several possibilities to improve the efficiency of the storage system are discussed (heat integration and the application of a heat storage system). Heat integration can significantly improve the overall efficiency, whereas the application of a heat storage system does not seem realistic. Compared with other hydrogen storage technologies, metal hydrides can feature higher efficiencies than low‐temperature hydrogen storage concepts, for example, liquefied or cryo‐adsorbed hydrogen. The efficiencies of a metal hydride storage system are similar to those reached with a system based on liquid organic hydrogen carriers. Copyright © 2016 John Wiley & Sons, Ltd.

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“…This anisotropy of expansion has also been observed in Refs. [14] and [20]. The planar morphology of cracks suggests a possible swelling mechanism based on the difference in specific volume between the i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y x x x ( 2 0 1 6 ) 1 e7 metallic and the hydride phases.…”

Section: Resultsmentioning

confidence: 99%

“…In fact the average gray level characterizing the imaging is related to the average density where the constituent single particles are often smaller than the spatial resolution of the CT and are not so visible. Larger MgH 2 display the full material density and could be also decorated by finely dispersed Nb 2 O 5 catalyst [19,20], so that they appear lighter in the image owing to a stronger X-ray absorption. Moreover it is possible to observe how, neglecting the presence of the large particles, the gray level is quite constant through the image highlighting the absence of macroscopic voids or extended defects in the as compacted sample.…”

Section: Experimental Methodsmentioning

confidence: 99%