Journal of Building Engineering,
Год журнала:
2024,
Номер
96, С. 110567 - 110567
Опубликована: Сен. 1, 2024
Given
the
critical
role
of
hybrid
energy
storage
systems
in
building
sector
for
enhancing
renewable
reliability
and
integration,
this
study
examines
techno-economic
feasibility
adopting
a
dual-level
system
PV-driven
commercial
Mediterranean
climate.
The
proposed
encompasses
both
hydrogen
metal
hydride
battery
units.
Aimed
at
off-grid
electrification,
optimal
component
sizing
is
identified
by
establishing
statistical
optimization
framework
using
response
surface
methodology.
Dynamic
simulations
are
performed
through
TRNSYS
model
coupled
with
numerical
code
that
simulates
system.
Regarding
net-zero
solutions,
it
shown
share
direct
PV
electricity
supply
to
end-use
fluctuates
within
limited
range
all
scenarios,
namely
between
57.7
60.5%,
while
each
varies
distinctively
solution.
results
indicate
striking
difference
scenarios
terms
economic
aspects;
differences
$
19,791
32,621
observed
minimum
maximum
values
initial
investment
life
cycle
cost,
respectively.
levelized
cost
0.354
0.403
$/kWh,
which
case
having
lowest
payback
period
(10.8
years)
demonstrates
too.
Furthermore,
an
inverse
relationship
production
rate
observed;
highest
annual
achieved
scenario
BESS
capacity
electrolyzer
power
volume,
equal
5.77
$/kg
304.7
kg
H2/yr,
Wiley Interdisciplinary Reviews Energy and Environment,
Год журнала:
2024,
Номер
13(3)
Опубликована: Май 1, 2024
Abstract
In
the
pursuit
of
sustainable
energy
solutions,
hydrogen
emerges
as
a
promising
candidate
for
decarbonization.
The
United
States
has
potential
to
sell
wind
at
record‐low
price
2.5
cents/kWh,
making
production
electricity
up
four
times
cheaper
than
natural
gas.
Hydrogen's
appeal
stems
from
its
highly
exothermic
reaction
with
oxygen,
producing
only
water
byproduct.
With
an
content
equivalent
2.4
kg
methane
or
2.8
gasoline
per
kilogram,
boasts
superior
energy‐to‐weight
ratio
compared
fossil
fuels.
However,
energy‐to‐volume
ratio,
exemplified
by
liquid
hydrogen's
8.5
MJ.L
−1
versus
gasoline's
32.6
,
presents
challenge,
requiring
larger
volume
energy.
addition,
this
review
employs
life
cycle
assessment
(LCA)
evaluate
full
cycle,
including
production,
storage,
and
utilization.
Through
examination
LCA
methodologies
principles,
underscores
importance
in
measuring
environmental
sustainability
consumption.
Key
findings
reveal
diverse
pathways,
such
blue,
green,
purple
hydrogen,
offering
nuanced
understanding
their
inventories.
impact
is
explored,
supported
case
studies
illustrating
implications.
Comparative
analysis
across
different
pathways
provides
crucial
insights
decision‐making,
shaping
considerations.
Ultimately,
emphasizes
LCA's
pivotal
role
guiding
economy
toward
low‐carbon
future,
positioning
versatile
carrier
significant
potential.
This
article
categorized
under:
Emerging
Technologies
>
Hydrogen
Fuel
Cells
Journal of Energy Storage,
Год журнала:
2024,
Номер
93, С. 112230 - 112230
Опубликована: Май 30, 2024
Efficient
storage
solutions
that
decouple
energy
use
and
production
are
pivotal
for
the
green
transition,
due
to
non-controllable
operation
of
solar
wind
power.
In
this
scenario,
hydrogen,
in
particular
metal
hydride
storage,
has
shown
excellent
potential.
paper
we
develop
a
mathematical
model
characterize
several
cylindrical
Metal
Hydride-Phase
Change
Material
tank
layouts
determine
improved
configuration
terms
charge/discharge
time
We
non-dimensional
parameters
guide
design
hybrid
hydride-phase
change
material
hydrogen
system.
introduce
critical
value
state
charge
system,
equal
ϕc∗=0.15,
above
which
heat
exchange
dominates
process
efficiency.
Results
show
that,
when
varying
canister
main
aspect
ratio
between
5
100,
equivalent
inlet/outlet
power
increases
by
factor
≈10.
The
thermal
conductivities
is
found
have
significant
impact
desorption
phase,
where
≈4
raising
from
0.1
0.8.
Finally,
evaluate
three
case
studies
introducing
different
configurations
comparing
them
with
baseline
design.
A
LaNi5/LiNO3−3H2O
system
1kWh
H2
exhibits
5.65kW
0.83kW
average
absorption
desorption,
respectively.
Such
an
93%
faster
respect
coupled
Mg2NiH4
-
NaNO3
2.93
kW
0.30
This
81%
than
KNO3
1.66
0.56
while
cycle
reduced
1220
min
147
(−88%).
