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,
Heat Transfer,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 11, 2024
ABSTRACT
Thermal
energy
storage
systems
using
PCM
offer
promising
solutions
for
efficient
thermal
applications.
This
study
aims
to
provide
valuable
insights
into
the
melting
process
and
compare
performance
of
different
heat
exchanger
models.
The
experimental
rig
is
carefully
designed
simulate
a
shell
tube
with
five
longitudinal
copper
fins
at
specific
conditions.
Three
distinct
models
exchanger,
labeled
Models
A,
B,
C,
were
examined
their
transfer
efficiency
during
process.
Numerical
simulations
conducted
three
compared
results.
Model
A
represented
benchmark
model.
It
had
uniform
fin
length,
location,
angle.
B
was
modified
design
aimed
enhancing
progress.
These
modifications
included
longer
lower
fin,
shorter
side
reference,
angle
optimize
performance.
C
incorporates
further
modifications,
top
location.
observations
revealed
significant
differences
in
among
average
rates,
measured
up
critical
decline
point,
are
crucial
parameters
practical
comparison
showed
that
surpassed
rate
point
by
10%
4%,
respectively,
demonstrating
its
superior
applicability.
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,
