Journal of Thermal Science and Engineering Applications,
Год журнала:
2024,
Номер
17(3)
Опубликована: Дек. 20, 2024
Abstract
This
research
explores
the
numerical
investigation
of
melting
processes
in
duplex
and
triplex
tube
latent
heat
thermal
energy
storage
(LHTES)
systems
utilizing
phase
change
material
(PCM)
enhanced
with
nickel
foam
MXene
nanoparticles.
By
incorporating
a
foam/PCM/MXene
(5%
v/v)
composite,
scrutinizes
effects
on
characteristics,
Stefan
Fourier
numbers,
behavior
both
(DuT-TES)
(TrT-TES)
configurations.
A
comprehensive
analysis
encompassing
liquid
fraction,
temperature
contours
across
varying
durations,
exergy
destruction,
exergetic
efficiency,
system
stored
is
conducted.
The
findings
indicate
that
employing
foam/PCM–MXene
composite
exhibit
superior
performance
compared
to
those
foam/PCM
or
pure
PCM,
resulting
notable
reduction
time.
Furthermore,
it
observed
surpasses
cetyl
alcohol
PCM.
In
TrT-TES
systems,
occurs
58.82%
faster
than
DuT-TES
systems.
4.55%
3.69%
greater,
respectively,
also
achieves
44.86%
higher
efficiency
at
90
s
foam/PCM.
Notably,
process
60.26%
DuT-TES.
Consequently,
demonstrate
potential
for
The
performance
of
latent
heat
thermal
energy
storage
(LHTES)
systems
can
be
significantly
enhanced
by
improving
the
properties
phase
change
materials
(PCMs).
Today,
these
serve
as
a
sustainable
resource
and
find
applications
in
various
sectors,
including
conservation
buildings,
household
hot
water
systems,
air
conditioning
units,
peak
load
reduction,
waste
recovery,
biomedical
applications.
This
paper
investigates
effects
fins
metal
foam
on
melting
solidification
rates
PCM
within
spherical
unit
(LHTESU).
To
assess
impact
fin
geometry
efficiency,
three
types
were
tested:
with
constant
length,
variable
curved-shaped
fins.
Additionally,
different
porosity
levels
considered.
A
finless
reservoir
filled
was
used
baseline
benchmark
to
evaluate
enhancements
provided
configurations.
results
indicated
that
utilizing
seven
fixed-length
thickness
1
mm
represents
most
effective
configuration
for
increasing
among
volume
fraction
cases,
leading
reductions
times
58.76%
72.66%,
respectively.
Furthermore,
incorporating
improved
rate
PCM,
achieving
time
89.11%
94.96%
when
85%
used.
These
highlight
potential
advanced
designs
porous
media
enhancing
offering
promising
insights
future
technologies.
Buildings,
Год журнала:
2025,
Номер
15(3), С. 320 - 320
Опубликована: Янв. 22, 2025
The
importance
of
phase
change
heat
storage
(PCHS)
in
solar
thermal
applications
is
limited
by
the
low
conductivity
materials
(PCMs)
and
uneven
temperature
distribution
during
transfer.
This
study
proposes
to
use
composite
fins
for
exchange
PCHS
module
integrate
them
into
a
hot-water
production
system
(HWPS)
building
heating.
effectiveness
novel
fin
structure
assessed
through
thorough
numerical
simulations
experimental
validation.
An
examination
melting
fractions,
distribution,
flow
characteristics
molten
PCMs
across
various
structures
indicates
that
increasing
lengths
quantities
cross
can
alleviate
challenge
incomplete
at
end
charging
process.
Notably,
expanding
surface
area
results
7.37-fold
increase
average
rate
781.25%
enhancement
response
compared
original
design.
These
findings
show
new
design
greatly
improves
performance
an
HWPS,
which
great
significance
energy
conservation.
