Hydrogen sorption properties of metal hydride beds: Effect of internal stresses caused by reactor geometry

Борзенко, В. И.; Romanov, I. A.; Дуников, Д. О.; Kazakov, A N

doi:10.1016/j.ijhydene.2019.01.052

Cited by 24 publications

(8 citation statements)

References 37 publications

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“…This indicates that the porous baffle helped hydrogen to reach a much more significant fraction of the material. Other examples of self-densification are shown in systems such as the mentioned La 0.9 Ce 0.1 Ni 5 [26,60] and FeTi [61]. Self-densification can lead to significant forces being applied to the tank, as found by Nachev et al [62], which showed that tangential stresses on the cylinder could be as high as 90 MPa.…”

Section: Tank Geometry and Fillingmentioning

confidence: 93%

“…Metal hydride compounds are typically denoted as A x B y where A elements (A = Ti, La, Nd, Y, Ge) strongly bind to hydrogen, and B elements (B = Ni, Al, Mn, Fe) hardly bind or do not bind to hydrogen. The compounds can absorb/desorb hydrogen under given temperature and hydrogen pressure conditions, with their unit cell experiencing a volume change by up to 20-25% [25,26]. It is of utmost importance to take this expansion into account when building scaled-up tank systems, which otherwise can lead to catastrophic failure of the tanks [27].…”

Section: Methodsmentioning

confidence: 99%

“…After preparing 500 g of La 0.9 Ce 0.1 Ni 5 via arc melting [26], the compound was placed into an autoclave oriented either vertically or horizontally. Though there was no significant effect in the sample's capacity at different orientations, differences were observed in the plateau pressures, with a desorption pressure plateau of 0.985 MPa for horizontal orientation and 0.964 MPa for the vertical orientation (at 333 K).…”

Section: Tank Geometry and Fillingmentioning

confidence: 99%

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Scaling up Metal Hydrides for Real-Scale Applications: Achievements, Challenges and Outlook

2021

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As the world evolves, so does the energy demand. The storage of hydrogen using metal hydrides shows great promise due to the ability to store and deliver energy on demand while achieving higher volumetric density and safer storage conditions compared with traditional storage options such as compressed gas or liquid hydrogen. Research is typically performed on lab-sized samples and tanks and shows great potential for large scale applications. However, the effects of scale-up on the metal hydride’s performance are relatively less investigated. Studies performed so far on both materials, and hydride-based storage tanks show that the scale-up can significantly impact the system’s capacity, kinetics, and sorption properties. The findings presented in this review suggest areas of further investigation in order to implement metal hydrides in real scale applications.

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Section: Tank Geometry and Fillingmentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Tank Geometry and Fillingmentioning

confidence: 99%

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Scaling up Metal Hydrides for Real-Scale Applications: Achievements, Challenges and Outlook

2021

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“…The alloy with composition La0.9Ce0.1Ni5 is chosen as metal hydride material with appropriate hydrogen capacity, equilibrium pressures in required temperature range. A measurement of hydrogen sorption properties is conducted by Sievert's technique (Fig.1.) [15]. Operation hydrogen pressure for polymer electrolyte membrane (PEM) fuel cell Hoppecke E-1100 supply should be in a range from 0.155 to 0.183 MPa.…”

Section: Selection Of Hydrogen Storage Alloymentioning

confidence: 99%

“…Hydrogen sorption/desorption «pressure-concentrationtemperature» diagram for La0.9Ce0.1Ni5 alloy[15].…”

mentioning

confidence: 99%

Integration of metal hydride devices with polymer electrolyte fuel cells and electrolyzers for stationary applications

et al. 2019

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This paper presents the experimental results of the system integration of a fuel cell (FC), an electrolyzer and a metal hydride hydrogen storage and purification system. A pilot scale experimental power installation H2Smart with an electric power of 1 kW is developed, and the results of its operation in different regimes are presented. The problems of hydrogen desorption for the supply of FC and hydrogen sorption from the electrolyzer at the start are shown. Possible solutions of this problem are proposed.

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A novel heat exchanger including hydrogen and water for heat capturing and combating water scarcity

Khoshkalam

2023

GRN TECH RES SUSTAIN

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In today's world, people have been facing different unpleasant phenomena like global warming, water shortage and thermal pollution. Power plants for electricity generation are one of the main sources of greenhouse gases and thermal pollution in aquatic ecosystem. On the other hand, these power plants consume high amount of freshwater for cooling purposes. Water scarcity is a detrimental crisis that the whole world is struggling with it. To combat the thermal pollution, various wet cooling and dry cooling technologies have been introduced and reviewed till today. While wet cooling systems use lots of water, dry cooling ones are not suitable options in warm weather and climates. Here, the need for an alternative element is felt more than ever. So far, water and air have been the main coolants in power generation units. According to specific heat capacities in different substances, hydrogen, by far has the highest amount. So, a novel heat exchanger containing hydrogen and water could be a promising solution for the mentioned issues. This paper focuses on advantages of this heat exchanger from different points of view, however, some assumptions, considerations and calculations should be carried out to have the best performance for this idea. Temperature control is such an important process that should be done in heat exchangers. Hence, a review on a control method has been carried out in this paper. The simulation results have been taken by MATLAB/SIMULINK software.

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Hydrogen sorption properties of metal hydride beds: Effect of internal stresses caused by reactor geometry

Cited by 24 publications

References 37 publications

Scaling up Metal Hydrides for Real-Scale Applications: Achievements, Challenges and Outlook

Scaling up Metal Hydrides for Real-Scale Applications: Achievements, Challenges and Outlook

Integration of metal hydride devices with polymer electrolyte fuel cells and electrolyzers for stationary applications

A novel heat exchanger including hydrogen and water for heat capturing and combating water scarcity

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