Energies,
Journal Year:
2023,
Volume and Issue:
16(19), P. 6915 - 6915
Published: Sept. 30, 2023
Solar
energy
is
a
sustainable
source
that
can
be
effectively
utilized
to
address
winter
heating
challenges
in
buildings.
To
ensure
the
efficient
application
of
solar
for
purposes
and
maintain
reliable
performance
system,
integration
phase-change
materials
(PCMs)
thermal
storage
(TES)
systems
has
emerged
as
crucial
auxiliary
approach.
This
study
focuses
on
design
simulation
four
TES
structures:
smooth,
finned,
metallic
foam,
foam-finned
tubes.
It
explores
their
characteristics,
such
complete
melting
time
heat
flux,
under
various
flow
conditions.
Additionally,
residential
building
Xi’an
selected
object,
where
proposed
system
employed
meet
demand.
Economic
indicators,
including
initial
investment
payback
period,
are
estimated
using
static
evaluation
method.
The
results
highlight
unit
with
tube
4800
s,
which
88.3%
less
than
smooth
tube.
Finally,
based
actual
project,
it
determined
an
HTF
rate
0.25
m/s,
requires
fewest
devices
(914)
period
13
months.
Heat Transfer Research,
Journal Year:
2024,
Volume and Issue:
55(14), P. 11 - 31
Published: Jan. 1, 2024
The
application
of
phase
change
material
(PCM)
in
energy
storage
systems
is
limited
by
its
low
thermal
conductivity.
One
the
effective
methods
to
improve
conductivity
PCM
embed
foam
metal
within
it.
To
investigate
effects
infill
position
and
porosity
on
melting
process
temperature
distribution
PCM,
a
visualized
experimental
system
study
built.
Paraffin
employed
as
with
point
62°C,
while
85%,
90%,
95%
copper
foams
are
chosen
experiment.
evolution
liquid-solid
interface
recorded.
Singlelayer
filling
schemes
show
that
placing
closer
bottom
accelerates
melting,
double-layer
further
optimize
time
distribution.
Additionally,
decreasing
enhances
heat
transfer,
shortening
times.
introduces
efficiency
index,
demonstrating
optimizing
porosities
improves
overall
performance.
When
90%
85%
arranged
middle
layers,
respectively,
complete
shortened
38.2%
maximum
average
differences
reduced
30.0%
45.2%,
compared
pure
paraffin.
findings
contribute
valuable
insights
into
designing
efficient
for
applications,
emphasizing
importance
arrangement
optimization.
Energies,
Journal Year:
2023,
Volume and Issue:
16(19), P. 6915 - 6915
Published: Sept. 30, 2023
Solar
energy
is
a
sustainable
source
that
can
be
effectively
utilized
to
address
winter
heating
challenges
in
buildings.
To
ensure
the
efficient
application
of
solar
for
purposes
and
maintain
reliable
performance
system,
integration
phase-change
materials
(PCMs)
thermal
storage
(TES)
systems
has
emerged
as
crucial
auxiliary
approach.
This
study
focuses
on
design
simulation
four
TES
structures:
smooth,
finned,
metallic
foam,
foam-finned
tubes.
It
explores
their
characteristics,
such
complete
melting
time
heat
flux,
under
various
flow
conditions.
Additionally,
residential
building
Xi’an
selected
object,
where
proposed
system
employed
meet
demand.
Economic
indicators,
including
initial
investment
payback
period,
are
estimated
using
static
evaluation
method.
The
results
highlight
unit
with
tube
4800
s,
which
88.3%
less
than
smooth
tube.
Finally,
based
actual
project,
it
determined
an
HTF
rate
0.25
m/s,
requires
fewest
devices
(914)
period
13
months.
