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.

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

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

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.

Two Dimensional Model for the Design of Metal Hydride Hydrogen Storage Systems

Adsorption ◽  
2005 ◽  
Vol 11 (S1) ◽  
pp. 871-876 ◽  
Author(s):  
Sarang A. Gadre ◽  
Armin D. Ebner ◽  
James A. Ritter
Keyword(s):  
Hydrogen Storage ◽  
Metal Hydride ◽  
Storage Systems ◽  
Two Dimensional ◽  
Dimensional Model ◽  
Two Dimensional Model ◽  
Hydride Hydrogen

scholarly journals Metal hydride hydrogen storage and purification technologies

2021 ◽  
Vol 2039 (1) ◽  
pp. 012005
Author(s):  
D V Blinov ◽  
V I Borzenko ◽  
A V Bezdudny ◽  
A N Kazakov
Keyword(s):  
Hydrogen Storage ◽  
Metal Hydride ◽  
High Volume ◽  
Recovery Rates ◽  
High Hydrogen ◽  
Hydrogen Recovery ◽  
Hydride Hydrogen ◽  
Flow Through

Abstract The results of the development of metal hydride (MH) reactors for the storage and purification of hydrogen of various types are presented. Two methods of metal hydride purification of hydrogen are presented. The use of the MH method of flow-through purification of hydrogen has high hydrogen recovery rates at high volume contents of hydrogen in the mixture (⩾10% vol.), while the method of periodic evacuation of accumulated impurities is most effective at low hydrogen contents in the mixture (<10% vol.).

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