Performance analysis of metal hydride-based hydrogen storage system / Nur Ain Amirah Rusman
Energy is one of the basic requirements in our daily lives. The world’s energy demand is continuously increasing over the years due to the ever-increasing growth in the human population as well as economic development. At present, approximately 90% of energy demand are fulfilled by fossil fuels....
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| Format: | Thesis |
| Published: |
2018
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| Online Access: | http://studentsrepo.um.edu.my/9991/1/Nur_Ain_Amirah_Binti_Rusman.jpg http://studentsrepo.um.edu.my/9991/8/amirah.pdf http://studentsrepo.um.edu.my/9991/ |
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| Summary: | Energy is one of the basic requirements in our daily lives. The world’s energy demand
is continuously increasing over the years due to the ever-increasing growth in the human
population as well as economic development. At present, approximately 90% of energy
demand are fulfilled by fossil fuels. With the rising demands of energy throughout the
globe, it can be expected that the availability of fossil fuels is depleting at an alarming
rate since fossil fuels are non-renewable sources of energy. In addition, fossil fuels are
the main contributor of greenhouse gas emissions and therefore, they have a detrimental
impact on human health and environment in the long term. Hence, there is a critical need
to develop alternative sources of energy in replacement of fossil fuels. For that reason,
hydrogen fuels have gained much interest among researchers all over the world since they
are clean, non-toxic and renewable energy source. However, the greatest challenge in
using hydrogen fuels lies in the development of hydrogen storage systems, especially for
on-board applications. Current technologies used for hydrogen storage include highpressure
compression at about 70 MPa, liquefaction at cryogenic temperature (20 K) and
absorption into solid state compounds. Among the three types of hydrogen storage
technologies, the storage of hydrogen in solid state compounds appears to be the most
feasible solution since it is a safer and more convenient. Because of that, hydrogen stored
in solid state as metal hydride has been studied for this project. In this project, a threedimensional
dynamic simulation for metal hydride based hydrogen storage tank was
performed using Computational Software COMSOL 5.1a Multiphysics. The software is
used to simulate the charging process in the metal hydride container that is able to
represent the system’s behavior. The model consists of a system of partial differential equations (PDE) describing three dimensional heat and mass transfer of hydrogen in a
porous matrix and has been implemented in a finite element program that allows obtaining
results on the charging variables at different studied scenarios. The model is validated
against published data and later the simulation result is compared with experimental data
to validate experimentally the numerical simulation. The effects of different parameters
such as porosity (ε), permeability ( |
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