Technologies,
Год журнала:
2024,
Номер
12(12), С. 266 - 266
Опубликована: Дек. 18, 2024
This
paper
presents
the
results
of
numerical
simulations
examining
thermodynamic
processes
during
hydraulic
hydrogen
compression,
using
COMSOL
Multiphysics®
6.0.
These
focus
on
application
compression
systems,
particularly
in
refueling
stations.
The
computational
models
employ
CFD
and
heat
transfer
modules,
along
with
deforming
mesh
technology,
to
simulate
gas
dynamics.
superposition
method
was
applied
simplify
analysis
liquid
piston
interactions
within
a
stainless-steel
chamber,
accounting
for
exchange
between
hydrogen,
oil
(working
fluid),
cylinder
walls.
study
investigates
effects
varying
stroke
durations
initial
pressures,
providing
detailed
insights
into
temperature
distributions
energy
consumption
under
different
conditions.
reveal
that
upper
region
chamber
experiences
significant
heating,
highlighting
need
efficient
cooling
systems.
Additionally,
show
longer
strokes
reduce
power
requirement
pump,
offering
potential
optimizing
system
design
reducing
equipment
costs.
offers
crucial
data
enhancing
efficiency
paving
way
improved
thermal
management
high-pressure
applications.
Energies,
Год журнала:
2025,
Номер
18(3), С. 650 - 650
Опубликована: Янв. 30, 2025
Hydrogen
has
emerged
as
a
critical
energy
carrier
for
achieving
global
decarbonization
and
supporting
sustainable
future.
This
review
explores
key
advancements
in
hydrogen
production
technologies,
including
electrolysis,
biomass
gasification,
thermochemical
processes,
alongside
innovations
storage
methods
like
metal
hydrides
liquid
organic
carriers
(LOHCs).
Despite
its
promise,
challenges
such
high
costs,
scalability
issues,
safety
concerns
persist.
Biomass
gasification
stands
out
dual
benefits
of
waste
management
carbon
neutrality
yet
hurdles
feedstock
variability
efficiency
need
further
attention.
also
identifies
opportunities
improvement,
developing
cost-effective
catalysts
hybrid
systems,
while
emphasizing
future
research
on
improving
tackling
bottlenecks.
By
addressing
these
challenges,
can
play
central
role
the
transition
to
cleaner
systems.
Molecules,
Год журнала:
2025,
Номер
30(7), С. 1487 - 1487
Опубликована: Март 27, 2025
Ammonia
borane
(AB)
has
attracted
much
attention
in
the
field
of
solid-state
hydrogen
storage
due
to
its
high
capacity.
Nanoconfinement
UiO-66
can
reduce
release
temperature.
In
particular,
terephthalic
acid
was
used
as
a
linker
further
improve
dehydrogenation
properties
through
modification
-NH2,
-OH,
-NO2,
-Br,
and
-F
groups.
The
content
0.5AB/UiO-66
1.98
wt.%,
whereas
UiO-66-2OH
modified
by
-OH
groups
increased
3.85
wt.%.
non-covalent
interaction
results
show
that
-NH2
preferred
adsorption
with
-BH3,
H
were
able
interact
directly
AB
modify
process
AB,
indirectly
affected
charge
density
atoms
alter
property
AB.
functional
provides
theoretical
basis
for
design
high-performance
MOF
nanoconfinement
composite
materials.
