Energies,
Journal Year:
2024,
Volume and Issue:
17(22), P. 5760 - 5760
Published: Nov. 18, 2024
Thermal
energy
storage
systems
utilising
phase
change
materials
offer
significantly
higher
densities
compared
to
traditional
solutions,
and
are
therefore
attracting
growing
interest
in
both
research
application
fields.
However,
the
further
development
of
this
technology
requires
effective
methods
enhance
thermal
efficiency.
We
propose
a
horizontal
periodic
shell-and-tube
structure
as
an
efficient
latent
heat
unit.
This
aims
analyse
transfer
not
only
between
tube
containing
fluid
material
but
also
adjacent
units.
The
results
obtained
for
single
cell
within
with
those
reference
units
insulated
adiabatic
highly
conductive
shells.
enthalpy–porosity
approach,
combined
Boussinesq
approximation,
is
applied
address
challenges
encountered
during
melting
solidification.
proves
be
unit
short
solidification
times.
In
contrast,
non-periodic
case
neglected
conduction
shell
increases
times
by
213.8%
21%,
respectively.
shortest
were
recorded
aspect
ratios
0.44
1,
Renewable Energy,
Journal Year:
2024,
Volume and Issue:
234, P. 121112 - 121112
Published: Aug. 8, 2024
On
the
one
hand,
solar-assisted
heat
pumps
have
become
a
popular
choice
for
efficient,
environmentally-friendly
heating
and
hot
water
production.
During
night,
it
is
also
possible
to
produce
cold
using
solar
collectors,
which
would
meet
building's
air-conditioning
needs.
Thermal
energy
storage
systems
are
essential
balancing
supply
demand,
particularly
with
intermittent
sources
such
as
power.
Phase
Change
Materials
(PCM)
offer
better
density
over
low
temperature
range,
means
that
size
of
latent
can
be
limited
compared
sensible
storage.
This
paper
presents
new
geometry,
acting
both
plate
exchanger
unit,
charged
discharged
simultaneously.
The
modelling
this
PCM
LTES
presented
in
pump.
aim
study
dynamically
simulate
system
combining
pump
four
units,
7
days
winter
summer.
will
make
verify
benefits
conventional
technologies
(electricity
natural
gas)
or
use
storages
terms
environmental
criteria.
A
sensitivity
carried
out
determine
ideal
design
parameters,
multi-criteria
decision-making
method.
Finally,
Life
Cycle
Assessment
(LCA)
on
system's
life
cycle
phase.
results
show
technologies.
Future
work
focus
optimisation
operating
parameters
flow
rates,
LCA
entire
system.
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 4, 2025
Abstract
This
study
investigates
numerically
the
effects
of
a
bimetallic
flexible
fin
on
heat
transfer
and
melting
process
liquid
phase
change
material
(PCM)
within
cavity.
The
is
attached
to
left
heated
wall
governing
equations
system
model
in
fluid
structure
domains
are
written
Arbitrary
Lagrangian–Eulerian
(ALE)
formulation
then
solved
by
Multiphysics
commercial
software
(COMSOL
6.1).
results
demonstrate
that
significantly
enhances
compared
fixed
fin,
leading
faster
PCM
for
different
values
Rayleigh
number.
Moreover,
configuration
leads
more
uniform
temperature
distribution
time
(up
11%
reduction)
fin.
