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

2012 ◽  
Vol 2 (1) ◽  
pp. 59-65
Author(s):  
Tetsuhiko Maeda ◽  
Keiichi Nishida ◽  
Yasuo Hasegawa ◽  
Yoshiaki Kawakami ◽  
Masao Masuda
Keyword(s):  
Numerical Simulation ◽  
Simulation Model ◽  
Metal Hydride ◽  
Energy Utilization ◽  
Hydrogen Energy

Numerical simulation of the hydrogen storage with reaction heat recovery using metal hydride in the totalized hydrogen energy utilization system

2011 ◽  
Vol 36 (17) ◽  
pp. 10845-10854 ◽  
Author(s):  
Tetsuhiko Maeda ◽  
Keiichi Nishida ◽  
Manabu Tange ◽  
Toru Takahashi ◽  
Akihiro Nakano ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Hydrogen Storage ◽  
Metal Hydride ◽  
Heat Recovery ◽  
Energy Utilization ◽  
Hydrogen Energy ◽  
Reaction Heat

A231 Studies on metal hydride tank in totalized hydrogen energy utilization system for buildings : Improvement of availability of reaction heat

2010 ◽  
Vol 2010 (0) ◽  
pp. 247-248
Author(s):  
Keiichi Nishida ◽  
Tetsuhiko Maeda ◽  
Akihiro Nakano ◽  
Hiroshi Ito ◽  
Yasuo Hasegawa ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Energy Utilization ◽  
Hydrogen Energy ◽  
Reaction Heat

The Actual Operation of Multiple Metal Hydride Hydrogen Storage Tanks in Totalized Hydrogen Energy Utilization System

2011 ◽  
Author(s):  
Yoshiaki Kawakami ◽  
Masao Masuda ◽  
Tetsuhiko Maeda ◽  
Akihiro Nakano ◽  
Manabu Tange ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Metal Hydride ◽  
Energy Use ◽  
Operating Conditions ◽  
Energy Utilization ◽  
Hydrogen Energy ◽  
Model Case ◽  
Power Load ◽  
Hydride Hydrogen ◽  
Load Leveling

As a method for simultaneously increasing efficiency of energy use and stability of energy supply in commercial buildings, we have proposed Totalized Hydrogen Energy Utilization System (THEUS) that uses hydrogen as a high potential for energy carrier. The hydrogen storage method used by this system adopts metal hydride that excels in volumetric storage density. In this paper, as the model case for electric power load leveling operation, the optimum design and optimum operation method for multiple metal hydride tanks are described with a mathematical model which can simulate operation of the metal hydride tank and experimental equipment. As a result, the combination of tank specifications and operating conditions that produce the effective simultaneous utilization of 1) hydrogen, 2) metal hydride and 3) heat are identified. Furthermore, an operating method to make the most of the metal hydride tank flexibility with respect to tank selection is determined.

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

2011 ◽  
Vol 36 (18) ◽  
pp. 11767-11776 ◽  
Author(s):  
Manabu Tange ◽  
Tetsuhiko Maeda ◽  
Akihiro Nakano ◽  
Hiroshi Ito ◽  
Yoshiaki Kawakami ◽  
...  
Keyword(s):  
Experimental Study ◽  
Hydrogen Storage ◽  
Metal Hydride ◽  
Heat Recovery ◽  
Energy Utilization ◽  
Hydrogen Energy ◽  
Reaction Heat

Numerical Simulation of Hydrogen Desorption in Metal-Hydride Reactor

2012 ◽  
Author(s):  
Fei Han ◽  
Weizhong Dai
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Mass Transfer ◽  
Finite Difference ◽  
Difference Scheme ◽  
Metal Hydride ◽  
Hydrogen Desorption ◽  
Hydrogen Energy ◽  
Two Dimensional ◽  
Cylindrical Metal

Studying hydrogen desorption in metal-hydrogen reactors is important for the usage and commercialization of hydrogen energy. In this article, we consider a cylindrical metal-H2 reactor and present a finite-difference scheme for simulating the heat and mass transfer between LaNi5 and H2 during the desorption of hydrogen in the reactor, by using a two-dimensional (2D) mathematical model. Numerical results including temperature, gas and solid densities are obtained.

scholarly journals D133 Studies on metal hydride tank in totalized hydrogen energy utilization system for buildings : Operational behavior and effective use of reaction heat

2009 ◽  
Vol 2009 (0) ◽  
pp. 107-108
Author(s):  
Shiro Yamazaki ◽  
Tetsuhiko Maeda ◽  
Hiroyuki Kodama ◽  
Yasuo Hasegawa ◽  
Akihiro Nakano ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Energy Utilization ◽  
Hydrogen Energy ◽  
Reaction Heat ◽  
Effective Use

scholarly journals Experimental Study on a Metal Hydride Tank for the Totalized Hydrogen Energy Utilization System

2012 ◽  
Vol 29 ◽  
pp. 463-468 ◽  
Author(s):  
Akihiro Nakano ◽  
Tetsuhiko Maeda ◽  
Hiroshi Ito ◽  
Theodore Motyka ◽  
Jose M Perez-Berrios ◽  
...  
Keyword(s):  
Experimental Study ◽  
Metal Hydride ◽  
Energy Utilization ◽  
Hydrogen Energy

Effect of the Metal Hydride Tank Structure on the Reaction Heat Recovery for the Totalized Hydrogen Energy Utilization System

2013 ◽  
Vol 3 (2) ◽  
pp. 103-109 ◽  
Author(s):  
Tetsuhiko Maeda ◽  
Akihiro Nakano ◽  
Hiroshi Ito ◽  
Theodore Motyka ◽  
Jose M Perez-Berrios ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Heat Recovery ◽  
Energy Utilization ◽  
Hydrogen Energy ◽  
Reaction Heat

D134 Studies on Metal Hydride Tank in Totalized Hydrogen Energy Utilization System for Buildings : Evaluation and Design of the System Operation

2009 ◽  
Vol 2009 (0) ◽  
pp. 109-110
Author(s):  
Yoshiaki Kawakami ◽  
Masao Masuda ◽  
Atsushi Takahashi ◽  
Tetsuhiko Maeda ◽  
Akihiro Nakano ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Energy Utilization ◽  
Hydrogen Energy ◽  
System Operation

Design Concept and the Performance of a Metal Hydride Hydrogen Storage Tank in Totalized Hydrogen Energy Utilization System

2011 ◽  
Author(s):  
Tetsuhiko Maeda ◽  
Keiichi Nishida ◽  
Shiro Yamazaki ◽  
Yoshiaki Kawakami ◽  
Masao Masuda ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Electric Power ◽  
Metal Hydride ◽  
Hot Water ◽  
Energy Utilization ◽  
Hydrogen Energy ◽  
Basic Operation ◽  
Reaction Heat ◽  
Heat Utilization ◽  
Utilization Ratio

We have proposed the Totalized Hydrogen Energy Utilization System (THEUS) for applying to commercial buildings. THEUS consists of fuel cells, water electrolyzers, metal hydride tanks and their auxiliaries. The basic operation of the THEUS is as follows: In the nighttime, hydrogen is produced by water electrolysis and stored in metal hydride tanks. In the daytime, it conducts fuel cell power generation using the stored hydrogen to meet the electric power demand of a building. The chilled and hot water generated in this process are also utilized. It is also possible to use the electric power from renewable energy. That is, THEUS has not only the load leveling function but the function to stabilize the grid system. The metal hydride tank is an important component of THEUS as hydrogen storage. The tank was designed as a thermally driven type, which be able to absorb/desorb hydrogen at normal temperature and pressure and utilize the endothermic reaction during hydrogen desorption as chilled water for air-conditioning. The tank with 50 kg AB5 type metal hydride alloy was assembled to investigate the hydrogen absorbing/desorbing process. The experimental results of the heat utilization ratio using this metal hydride tank are about 43%. Since the reaction heat is consumed to heat and to cool the tank up to the temperature of possible heat utilization. The heat utilization ratio can be improved by reduced the heat capacity of the tank and exchanging heat with multiple tanks.

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