Journal of Engineering and Applied Science,
Journal Year:
2024,
Volume and Issue:
71(1)
Published: Dec. 1, 2024
Abstract
Nanofluids
in
microchannels
present
a
promising
solution
for
enhancing
heat
dissipation
across
various
engineering
applications.
This
study
provide
an
in-depth
analysis
of
nanofluid
role
improving
transfer
efficiency,
focusing
on
critical
factors
such
as
nanoparticle
concentration,
type,
and
size.
The
influence
microchannel
geometry—such
sinusoidal,
square,
circular
designs—and
the
addition
rib
structures
were
also
examined.
A
noticeable
increase
pressure
drop
was
observed
spectrum
investigations
beyond
concentration
threshold
1
vol.
%.
Diverging-converging
channels
demonstrated
potential
with
minimal
pumping
power.
Most
reviewed
papers
have
used
water
water-ethylene
glycol
mixtures
(65%
16%,
respectively),
along
prevalent
use
Al
2
O
3
nanoparticles
(37%),
underscoring
need
to
explore
alternative
base
fluids
combinations
achieve
optimal
performance.
focus
numerical
simulations
61%
75%
single-phase
flow
studies
highlights
expand
research
into
multiphase
phenomena.
Furthermore,
limited
exploration
shape
effects
reliance
simplistic
thermal
conductivity
models
point
toward
avenues
future
investigation
model
refinement.
Journal of Physics Conference Series,
Journal Year:
2024,
Volume and Issue:
2766(1), P. 012127 - 012127
Published: May 1, 2024
Abstract
This
paper
addresses
part
of
a
wider
project
aiming
at
the
development
microchannel
based
heat
sink
to
cool
photovoltaic
panels.
The
work
presented
here
gives
emphasis
working
conditions
leading
flow
boiling
in
and
focuses
on
instabilities
potential
effect
surface
microstructuring
transfer
enhancement
controlling
such
instabilities.
After
identifying
regimes,
observed
phenomena
are
qualitatively
quantitatively
described.
results
show
that
regular
pattern
microcavities
enhances
promotes
occurrence
more
stable
flow.
Frontiers in Thermal Engineering,
Journal Year:
2024,
Volume and Issue:
4
Published: June 19, 2024
The
development
of
new
and
more
effective
cooling
technologies
is
required
for
several
high
thermal
power
dissipation
applications
such
as
in
electronics
or
concentrated
photovoltaic
panels.
present
paper
addresses
an
experimental
study
on
the
a
microchannel
based
heat
sink
to
cool
Experiments
focus
test
microchannel,
with
geometry
dimensions
optimized
from
previous
work.
analysis
performed
here
emphasizes
characterization
flow
boiling
under
different
working
conditions.
results
include
pressure
drop
flux
maps,
obtained
combining
sensors
high-speed
imaging
time
resolved
thermography.
was
able
identify
where
nucleation
sites
were
formed.
Slug
interfacial
transfer
could
be
observed
accurately
described
maps.
Overall,
show
potential
infrared
thermography
characterize
complex
flows.
These
also
that
there
good
this
removing
fluxes
application
considered
here,
when
compared
other
liquid
air-cooling
technologies.
Journal of Engineering and Applied Science,
Journal Year:
2024,
Volume and Issue:
71(1)
Published: Dec. 1, 2024
Abstract
Nanofluids
in
microchannels
present
a
promising
solution
for
enhancing
heat
dissipation
across
various
engineering
applications.
This
study
provide
an
in-depth
analysis
of
nanofluid
role
improving
transfer
efficiency,
focusing
on
critical
factors
such
as
nanoparticle
concentration,
type,
and
size.
The
influence
microchannel
geometry—such
sinusoidal,
square,
circular
designs—and
the
addition
rib
structures
were
also
examined.
A
noticeable
increase
pressure
drop
was
observed
spectrum
investigations
beyond
concentration
threshold
1
vol.
%.
Diverging-converging
channels
demonstrated
potential
with
minimal
pumping
power.
Most
reviewed
papers
have
used
water
water-ethylene
glycol
mixtures
(65%
16%,
respectively),
along
prevalent
use
Al
2
O
3
nanoparticles
(37%),
underscoring
need
to
explore
alternative
base
fluids
combinations
achieve
optimal
performance.
focus
numerical
simulations
61%
75%
single-phase
flow
studies
highlights
expand
research
into
multiphase
phenomena.
Furthermore,
limited
exploration
shape
effects
reliance
simplistic
thermal
conductivity
models
point
toward
avenues
future
investigation
model
refinement.
