Revue des composites et des matériaux avancés,
Год журнала:
2023,
Номер
33(3), С. 145 - 151
Опубликована: Июнь 30, 2023
Protecting
the
phase
change
material
(PCM)
from
thermal
aging
is
done
by
using
polyethylene
(high-density/HDPE)
as
supporting
matrix.The
HDPE
content
set
at
5
wt%,
10
wt%
and
15
wt%.The
composite
PCM
(cPCM)
treated
through
repeating
melting/solidification
process
up
to
10,000
cycles
which
conducted
between
temperature
55℃-65℃.The
capacity
of
paraffin
wax
(PW)
reduced
notably,
where
enthalpy
fusion
decreased
145.92
J/g
138.46
J/g.The
cPCM
with
maintain
a
notable
performance
only
reduces
slightly
130.7
129.7
127.7
127.2
J/g,
respectively.The
supercooling
degree
PW
increases
around
1.64℃,
accelerates
cooling
rate
4.81℃/min.The
in
physical
behavior
PW,
minimizes
shrinkage
effect
during
solidification.The
highest
heating
found
2.29℃/min
minor
decrement
(0.06℃/min)
for
after
treatment.The
finding
this
work
can
be
used
fundamental
basis
develop
high
cycle
able
operate
extended
that
suitable
sensitive
operation.
Journal of Computational Design and Engineering,
Год журнала:
2024,
Номер
11(2), С. 122 - 145
Опубликована: Фев. 23, 2024
Abstract
This
paper
examines
the
impact
of
various
parameters,
including
frames,
zigzag
number,
and
enclosure
shape,
on
solidification
process
thermal
energy
storage
rate
a
vertical
phase
change
material
(PCM)
container.
The
study
also
assesses
effects
flow
heat
transfer
fluid
as
well
changing
materials
PCM
between
RT35
RT35HC.
In
addition,
compares
framed
versus
unframed
systems
and,
subsequently,
best
case
was
tested
with
pitch
numbers
before
zigzag-shaped
structure
to
arc
reversed-arc.
findings
are
examined
by
contrasting
different
scenarios’
liquid
fractions,
temperature
distributions,
rates,
rates.
results
show
that
geometry
is
66%
faster
reach
target
compared
employing
in
can
significantly
improve
time
recovery
rate.
As
number
pitches
increases,
improvement
decreases
but
still
improves
reversed-arc-shaped
has
performance
other
undulated
surfaces.
For
system
RT35HC,
discharge
55%
higher
RT35,
while
8.2%
for
former
during
first
3000
s
discharging
process.
Results in Engineering,
Год журнала:
2023,
Номер
18, С. 101210 - 101210
Опубликована: Июнь 1, 2023
Multiphase
coexistence
in
the
organic
phase
change
material
(PCM)
leads
to
practical
drawbacks.
It
causes
partial
charge/discharge
behavior,
which
reduces
operational
reliability
of
an
active
latent
storage
unit
(LSU).
The
present
work
proposes
stabilized
OPCM
(SOPCM)
as
a
suitable
method
promote
better
transition
performance.
stabilization
is
done
by
adding
10
wt%
polymers
(high-density
polyethylene/HDPE)
for
OPCM.
proposed
supercooling
degree
PCM
up
4.2
°C.
makes
specific
state
charge
(SoC)
SOPCM
increase
18.8%/°C
along
with
transition.
has
lower
temperature
gradient
(3.5
°C-4.5
°C)
compared
(5.2
°C-7.7
during
solid-liquid
Dynamic
heating
and
cooling
tests
rectangular
shell
u-finned
tube
demonstrate
charging/discharging
behavior
SOPCM,
varies
significantly.
power
profile
fluctuated,
particularly
region.
implies
that
process
severe
disturbance
heat
transfer
rate.
Contrary
that,
fluctuation,
indicating
stable
process.
gives
efficiency
(80.2%–90.2%)
than
(72.5%–77.1%).
discharges
stored
effectively
residual
at
end
discharging
Moreover,
higher
thermal
conductivity
liquid
(0.184
W·m−1·K−1–0.213
W
m−1
K−1)
accelerates
average
response
time
reach
targeted
nominal
Journal of Industrial Textiles,
Год журнала:
2024,
Номер
54
Опубликована: Янв. 1, 2024
The
application
of
phase
change
material
(PCM)
has
shown
great
potential
in
the
fabrication
PCM-integrated
cloth
(PCMIC)
due
to
its
numerous
advantages,
including
latent
heat
storage,
narrow
temperature
range,
energy
storage
density,
longevity,
and
compatibility
with
textile
processing.
PCMs
can
lessen
demand
for
mechanical
heating
cooling
systems,
which
save
assist
environment
towards
sustainability.
provides
new
opportunities
enhance
thermal
comfort,
efficiency,
functionality
across
a
range
applications.
advancement
PCMIC
promise
past
decade.
This
review
covers
fundamentals,
latest
advancements,
characterization
methods,
advanced
applications
detail.
Progresses,
challenges,
versatile
space
wear,
medical
textiles,
sportswear,
bedding,
thermoregulating
buildings,
flame-retardant
automotive
footwear
are
critically
summarized.
Space
agencies
like
NASA,
ESA
used
PCM-based
products
comfortable
exploration
while
surgical
gauges,
bandages,
other
clinical
incorporated
PCM
comfort
much
patients.
Moreover,
sportswear
brands
Nike
Adidas
utilized
their
better
wearability.
Through
an
analysis
foundations,
current
developments,
this
thorough
overview
is
valuable
resource
further
innovation
progress
field
textiles.
Results in Materials,
Год журнала:
2023,
Номер
19, С. 100443 - 100443
Опубликована: Авг. 20, 2023
The
present
work
assesses
the
direct
contact
cascaded
immiscible
phase
change
material
(PCM)
for
solar
heat
storage
systems
(SHSS)
in
water
heating
applications.
PCM
uses
ternary
salt
mixture
(TSM)
and
high-density
polyethylene
(HDPE).
Improvement
on
behavior
thermal
properties
are
obtained
TSM/HDPE.
plasticity
effect
of
HDPE
leads
to
a
stable
transition
with
lowest
supercooling
degree
by
0.9
°C.
initial
decomposition
temperature
TSM
is
above
400
°C,
which
suitable
moderate
operation
SHSS.
immiscibility
between
multistep
110.2
139.6
during
liquid-solid
demonstrates
gradient
13.9
implying
steady
transition.
It
allows
stored
can
be
released
effectively
without
causing
significant
volume
expansion
TSM.
Moreover,
enthalpy
fusion
TSM/HDPE
increased,
making
it
favorable
as
energy
applications
Case Studies in Chemical and Environmental Engineering,
Год журнала:
2023,
Номер
8, С. 100443 - 100443
Опубликована: Авг. 1, 2023
Wastepaper
is
a
potential
biomass
source
that
can
be
processed
into
solid
fuel
(briquette).
The
present
work
proposes
novel
method
to
improve
the
storage
property
of
briquettes
for
large-scale
production.
Improvement
made
by
adding
hydrophobic
compound
(paraffin
wax)
form
shape-stabilized
paper
briquette
(SSPB).
Three
different
scenarios
are
performed
720
hours.
moisture
content
increases
significantly
up
35.44%
with
relaxed
index
1.19.
SSPB
shows
unsubstantial
increment
(5.1%)
1.05.
has
better
mechanical
durability
(97%)
than
(82%).
Thus,
used
maintain
quality
during
period.
