Energies,
Год журнала:
2025,
Номер
18(5), С. 1230 - 1230
Опубликована: Март 3, 2025
With
the
continuous
increase
in
thermal
power
of
electronic
devices,
air
cooling
is
becoming
increasingly
challenging
terms
meeting
heat
dissipation
requirements.
Liquid
media
have
a
higher
specific
capacity
and
better
effect,
making
it
more
efficient
method.
In
order
to
improve
effect
liquid
cooling,
TPMS
structure
with
larger
surface
area,
which
implicit
function
parameters
can
control,
be
arranged
shape
manner
easy
expand
structural
design.
It
has
excellent
potential
for
application
field
dissipation.
At
present,
research
still
its
initial
stage
lacks
comparative
studies
on
cooled
convective
transfer
structures
G
(Gyroid),
D
(Diamond),
P
(Primitive).
This
paper
investigates
performance
pressure
drop
characteristics
sheet-like
microstructure
composed
classic
structures,
(Primitive),
single
crystal
cell
length
2π
(mm),
number
1
×
5,
size
(mm)
22π
using
constant
temperature
model.
By
analyzing
outlet
tout,
p,
average
coefficient
h0,
Nusselt
Nu,
wall
friction
factor
f
within
speed
range
0.01–0.11
m/s
100
°C,
>
were
obtained
(the
difference
between
very
small,
less
than
20
Pa,
considered
consistent).
When
flow
velocity
0.01
m/s,
maximum
at
four
reached
17.14
103.264,
relative
change
646%.
0.11
among
8461.84
h0
7513
W/(m2·K),
63.36%;
Nu
76.32,
62.09%.
explains
reasons
above
conclusions
by
proportion
solid
area
structure,
porosity
streamlines
microstructure.
International Journal of Heat and Mass Transfer,
Год журнала:
2024,
Номер
231, С. 125882 - 125882
Опубликована: Июнь 29, 2024
This
paper
presents
a
study
of
novel
type
heat
exchanger
(HE)
whose
core
is
built
based
on
Triply
Periodic
Minimal
Surface
structure.
The
this
as
periodic
structure
gyroid-type
lattice
and
manufactured
by
laser
powder-bed
fusion
technology.
solution
distinguished
not
only
an
exceptionally
favorable
ratio
the
exchange
surface
area
to
volume
occupied
but
also
unique
geometry
that
additionally
turbulates
flow
intensifies
process.
article
contains
results
numerical
analyses
entire
under
different
operating
conditions
small
fragments
filled
with
cells
sizes.
Numerical
analyzes
lattice-type
are
performed
basis
experimentally
validated
model.
objective
determine
performance
gyroid
HE
operational
select
best
elementary
cell
size
per
for
assumed
conditions.
printed
was
compared
plate
30%
larger,
although
one
managed
achieve
10.5%
higher
values
in
average
Number
Transfer
Units
(NTU)
5%
temperature
effectiveness
(TE)
studied
range
parameters.
The
triply
periodic
minimal
surface
(TPMS)
is
a
potential
candidate
for
constructing
the
next-generation
heat
exchanger
(HEX)
due
to
its
considerably
high
specific
area
and
flexible
topology.
Considering
flow
rate
volume
ratio
of
cold-to-hot
fluid
domain,
this
work
aims
probe
matching
effect
on
thermohydraulic
features
cross-flow
HEXs
using
gyroid
TPMS
structures.
results
indicate
that
owing
contiguous
intertwined
path,
structures
induce
three-dimensional
spiral
with
three
typical
characteristics
(“merge-split,”
parallel,
circulation)
from
different
perspectives,
dominating
mixing
exchanger.
have
negligible
influence
but
intensities.
Increasing
cold-side
velocity
constant
hot-side
can
remarkably
enhance
convection
transfer
cold
side
an
increased
pressure
drop,
while
hot
influenced
negligibly.
Finally,
total
gradually
raised
reaches
stability
limited
transfer.
A
slightly
higher
recommended
improving
HEXs.
In
comparison,
simultaneously
affects
fluid–solid
interface
internal
under
mutual
restriction
between
fluids
optimum
Rvol
=
1.0.
With
0.42
1.0,
by
7.7%,
outlet
temperature
decreases
1.5
K.
Compared
traditional
structures,
structure
offers
100%
150%–225%
volume-based
power
density.
