Experimental study of hydrogen storage with reaction heat recovery using metal hydride in a totalized hydrogen energy utilization system

Tange, Manabu; Maeda, Tetsuhiko; Nakano, Akihiro; Ito, Hiroshi; Kawakami, Y.; Masuda, Mitsuharu; Takahashi, Toru

doi:10.1016/j.ijhydene.2011.06.023

Cited by 44 publications

(15 citation statements)

References 28 publications

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“…Fig. 3 shows the experimental setup of the metal hydride tank [3]. When the circulating water temperature was higher than 12 ºC during the desorption process and lower than 32 ºC during the absorption process, the circulating water flowed through the tank without any external temperature control by the pump that connected the inlet and exit of the circulating water.…”

Section: Purpose Of Theus and Metal Hydride Tankmentioning

confidence: 99%

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Improvement of Numerical Simulation Model of the Metal Hydride Tank for the Totalized Hydrogen Energy Utilization System

Maeda¹,

Nishida²,

Hasegawa³

et al. 2012

Journal of International Council on Electrical Engineering

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-Authors have proposed the Totalized Hydrogen Energy Utilization System(THEUS) for load leveling and stabilizing the grid system. THEUS consists of fuel cells, water electrolyzers, hydrogen storage and their auxiliary machinery. The basic operation for load leveling is as follows: In the nighttime, it produces hydrogen through water electrolysis by using low-cost electric power and stores the hydrogen. In the daytime, it conducts fuel cell generation using the stored hydrogen to meet the demand. Hydrogen storage equipment is the core of THEUS. In this paper, the metal hydride tank was chosen as hydrogen storage. The hydrogen desorption process is endothermic reaction. It is possible to use the cool heat for air conditioning. It is necessary to develop a useful numerical simulation code for not only the operation method but also the optimization of the structure of the tank. We developed the simulation code. The validity of the code has been improved by comparing with experimental results. Concretely, the following points were considered. (1)The thermal capacity of the tank.(2)Heat loss to the outside. (3)The copper plate effect. The simulation results become in good agreement with experimental results. And to achieve hydrogen high flow rate, new design tank performance was investigated.

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Section: Purpose Of Theus and Metal Hydride Tankmentioning

confidence: 99%

“…The actual 24-hour cycle experiments were carried out continuously for 4 consecutive days [2] [3]. Fig.…”

Section: -Hour Cycle Comparison Experiments and Simulationmentioning

confidence: 99%

Improvement of Numerical Simulation Model of the Metal Hydride Tank for the Totalized Hydrogen Energy Utilization System

Maeda¹,

Nishida²,

Hasegawa³

et al. 2012

Journal of International Council on Electrical Engineering

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“…For various practical applications, different metals and alloys are selected as hydrogen storage materials in the metal hydride beds. Rare earth based alloys such as LaNi 5 and its substituted derivatives are generally used in lab-scale or stationary fuel cell system, for they are feasible to achieve a desired equilibrium pressure at ambient temperature with high hydrogen volumetric density [7,26,27]. Magnesium hydride is recommended as an ideal hydrogen storage medium for transportation due to its high gravimetric hydrogen capacity.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on full-scale ZrCo and depleted uranium beds applied for fast recovery and delivery of hydrogen isotopes

et al. 2015

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“…The Totalized Hydrogen Energy Utilization System (THEUS) is a stationary hydrogen system for commercial building applications [1,2]. THEUS is comprised of a Unitized Reversible (or Regenerative) Fuel Cell (URFC) and metal hydride tanks.…”

Section: Introductionmentioning

confidence: 99%

“…Thus metal hydride tanks should operate below 1.0 MPa (G) in Japan. Several metal hydride tanks that satisfy this requirement have been reported [2,8,9] but most reports result for operation above 1.0 MPa (G) [10e14].…”

Section: Introductionmentioning

confidence: 99%

Research and development for a metal hydride tank with double coil type heat exchanger below 1.0 MPa (G) operation

Nakano

Ito

Bhogilla

et al. 2015

International Journal of Hydrogen Energy

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Metal hydrideReaction heat Renewable energyHydrogen system a b s t r a c t A metal hydride tank has been developed with the aim of recovering the reaction heat of a metal hydride for the Totalized Hydrogen Energy Utilization System application. The metal hydride tank, which had the same geometrical configuration as one previously evaluated at SRNL, was fabricate with a different composition of the metal hydride alloy for operation below 1.0 MPa (Gauge). The hydrogen mass flow data from hydrogen production by renewable energy (solar power) and the fuel cell operation, which were obtained at SRNL, were used for the testing at AIST. The relatively large heat leak from the tank support of the metal hydride tank at SRNL was confirmed, and thus the tank support was replaced in this work. Furthermore, a vacuum thermal insulator was developed and applied to the metal hydride tank. This resulted in overall tank size reduction without reducing the thermal insulation performance.

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Experimental study of hydrogen storage with reaction heat recovery using metal hydride in a totalized hydrogen energy utilization system

Cited by 44 publications

References 28 publications

Improvement of Numerical Simulation Model of the Metal Hydride Tank for the Totalized Hydrogen Energy Utilization System

Improvement of Numerical Simulation Model of the Metal Hydride Tank for the Totalized Hydrogen Energy Utilization System

Experimental study on full-scale ZrCo and depleted uranium beds applied for fast recovery and delivery of hydrogen isotopes

Research and development for a metal hydride tank with double coil type heat exchanger below 1.0 MPa (G) operation

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