Design of a large-scale metal hydride based hydrogen storage reactor: Simulation and heat transfer optimization

Afzal, Mahvash; Sharma, Pratibha

doi:10.1016/j.ijhydene.2018.05.084

Cited by 53 publications

(26 citation statements)

References 36 publications

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“…Porosity is a parameter that is either calculated during cycling [76] or kept constant [77][78][79][80]. Changes in the porosity throughout the tank are less common in simulations [81,82]. The effect of self-densification was simulated for Ti 0.98 Zr 0.02 V 0.43 Fe 0.09 Cr 0.05 Mn 1.5, showing that the reaction rate could be enhanced up to 25 times due to particle pulverization [82].…”

Section: Porositymentioning

confidence: 99%

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: Porositymentioning

confidence: 99%

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

2021

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“…A comparison is necessary to identify and understand the effect of f th to the hydrogenation behaviour. Figure 5A presents the hydrogen storage behaviour for all the different cases of f n (50,55,60,65,70) and f th (2, 3, 5, and 8 mm) for the case of h t = 2000 W/m 2 K. Figure 5B presents the storage behaviour when h t = 5000 W/m 2 K.…”

Section: Metal Hydride Thickness Effect On the Hydrogenation Kineticsmentioning

confidence: 99%

“…A large-scale hydrogen storage system for the hydrogenation process of 210 kg of Hydralloy C5 (Ti-Mn-based) has been presented. 60 The main concern for considering this study was the large-scale solid-state hydrogen storage systems that are creating hot spots, as well as parasitic system weight, and the authors tried to answer the question of the most effective heat transfer enhancements. The reactor dimensions have selected to be radius of 0.1524 m and height of 1.047 m. The main result of the study is that an optimum geometry was found to include 14 cooling tubes where a gravimetric capacity of 0.7% could be reached in 15 minutes.…”

Section: Introductionmentioning

confidence: 99%

“…60 The main concern for considering this study was the large-scale solid-state hydrogen storage systems that are creating hot spots, as well as parasitic system weight, and the authors tried to answer the question of the most effective heat transfer enhancements. 60 The main concern for considering this study was the large-scale solid-state hydrogen storage systems that are creating hot spots, as well as parasitic system weight, and the authors tried to answer the question of the most effective heat transfer enhancements.…”

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confidence: 99%

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Study on the hydrogenation of an Mm‐based AB ₅ ‐intermetallic for sustainable building applications

Gkanas

2019

Int J Energy Res

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Summary In the present study, a numerical approach regarding the thermal management of an Mm‐based AB5‐intermetallic (MmNi4.6Al0.4) for the hydrogenation process is introduced and analysed. Several heat management scenarios are studied. The numerical model was supported and validated with experimental data in terms of hydrogenation capacity and temperature distribution. The numerical analysis is based on the introduction of the energy, mass, and momentum conservation equations to numerically describe the hydrogenation reaction. The main aim of the present study is the numerical description of the heat management when 200 g of hydrogen are stored (13 kg of the hydride). The heat management cases consider the usage of cooling tubes in combination with high thermal conductivity fins. In general, various parameters affect the efficiency of the heat management. The parameters considered are the fin thickness, the fin number—which is directly connected to the metal hydride thickness convective heat transfer coefficient. A nondimensional parameter (nondimensional conductance [NDC]) specially modified to describe the role of the fins in addition to the cooling tubes is introduced to evaluate the heat management. The target of the study was to reduce the hydrogenation time of almost 13 kg of MmNi4.6Al0.4, and from the parametric study, it has been found that the more efficient conditions are fin thickness between 5 and 8 mm and the convective heat transfer coefficient of 2000 W/m2 K.

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“…Similarly, Afzal et al 10 presented an optimized design for a 210 kg Ti-Mn alloy-based hydrogen storage system for stationary application. A 14 multi-tubular, shell and tube type storage system was selected, which completes the absorption process in 900 seconds and desorption in 2000 seconds at a system gravimetric capacity of 0.7%.…”

Section: Introductionmentioning

confidence: 99%

Modeling and numerical simulation of an industrial scale metal hydride reactor based on CFD‐Taguchi combined method

Mallik

Sharma

2021

Energy Storage

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This study proposes a cylindrical reactor design embedded with bifurcating longitudinal finned cooling tubes as the heat exchanger for an industrial-scale metal hydride reactor system. We use Taguchi method as an optimization technique for the design parameters. The model performance was simulated with an objective of attaining the least time of absorption. The optimization involved seven control factors in an array of L 18 (2 1 3 6 ). We observed that the number of cooling tubes, the fin length, and the number of fins are the most critical parameters for optimizing absorption time. A three-dimensional numerical model has been developed using COMSOL Multiphysics 5.2a to predict the optimized design's hydriding performance. The absorption characteristics were studied based on the variation of pressure and heat transfer fluid temperature. At a supply pressure of 20 bars and a cooling fluid temperature of 20 C in a 50 kg system with 8 bifurcating finned cooling tubes, a hydrogen storage capacity of 1.21 wt% was achieved in 700 seconds. This paper highlights an optimized design's efficiency and operating parameter's influence to garner the best performance for rapid hydrogen charging.

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Design of a large-scale metal hydride based hydrogen storage reactor: Simulation and heat transfer optimization

Cited by 53 publications

References 36 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

Study on the hydrogenation of an Mm‐based AB ₅ ‐intermetallic for sustainable building applications

Modeling and numerical simulation of an industrial scale metal hydride reactor based on CFD‐Taguchi combined method

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Design of a large-scale metal hydride based hydrogen storage reactor: Simulation and heat transfer optimization

Cited by 53 publications

References 36 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

Study on the hydrogenation of an Mm‐based AB 5 ‐intermetallic for sustainable building applications

Modeling and numerical simulation of an industrial scale metal hydride reactor based on CFD‐Taguchi combined method

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Study on the hydrogenation of an Mm‐based AB ₅ ‐intermetallic for sustainable building applications