A
vertical
shell
and
tube
Latent
Heat
Thermal
Energy
Storage
System
is
analyzed.
The
cylinder
filled
by
PCM.
Different
cases
are
studied
with
without
metal
foam
at
different
porosities.
internal
surface
corrugated,
it
assumed
a
constant
temperature
over
the
melting
of
PCM
to
simulate
heat
transfer.
external
loses
outside
top
bottom
surfaces
adiabatic.
In
some
cases,
also
considered
Paraffin
wax
used
as
phase
change
material
that
melts
range
temperatures
has
high
latent
fusion.
made
aluminum.
process
described
using
enthalpy-porosity
theory
employs
Local
Equilibrium
hypothesis
model
transfer
between
Darcy-Forchheimer
models
mass
transport
paraffin
foam.
Solutions
governing
equations
computed
commercial
software
Ansys-Fluent.
Various
conductivity
variations
on
wall
filling
ratios
investigated.
Melting
time,
stored
enthalpy,
energy
loss
derived
from
numerical
simulations
provided.
results
show
higher
ratio
lead
more
pronounced
reductions
in
charging
particularly
lower
porosity.
Moreover,
for
FullPCM
case
observed
halved
when
transitioning
adiabatic
conditions
scenario
surface.
contrast,
all
other
reduction
maximum
achievable
enthalpy
relatively
modest.
Journal of Energy Storage,
Год журнала:
2024,
Номер
85, С. 111096 - 111096
Опубликована: Март 6, 2024
A
vertical
cylindrical
shell
and
tube
Latent
Heat
Thermal
Energy
Storage
(LHTES)
system
with
internal
corrugated
is
numerically
analyzed.
The
phase
change
material
(PCM)
partially
filled
aluminum
foam.
surface
assumed
at
assigned
temperature
higher
than
the
melting
of
considered
PCM.
losses
toward
external
ambient
are
also
considered.
governing
equations
written
considering
Brinkman-Darcy-Forchheimer
model
local
thermal
equilibrium
assumption.
numerical
developed
using
finite
volume
technique
employing
enthalpy-porosity
method
to
solve
problem.
solutions
carried
out
by
means
commercial
code
Ansys-Fluent.
Numerical
simulations
conducted
for
different
metal
foam
filling
levels,
various
porosity
values
corrugations,
both
without
losses.
Melting
time,
stored
enthalpy,
derived
from
provided.
findings
highlight
that
time
decreases
more
significantly
ratio
respect
due
increase
in
wave
number
decrease
amplitude.
heat
determines
an
time.
For
cases
losses,
enthalpy
lowest
energy
storage
totally
highest
number.
However,
these
present
