Advanced Sustainable Systems,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 30, 2024
Abstract
Solar
energy
is
an
inexhaustible
clean
energy.
Owing
to
the
shortage
of
fossil
fuels
and
development
science
technology,
increasing
attention
being
paid
use
solar
Photothermal
conversion
(PC)
materials
are
crucial
for
effectively
acquiring
converting
At
present,
various
PC
have
shown
considerable
potential,
particularly
hydrogels,
a
new
type
material
that
has
been
increasingly
studied
by
researchers
in
recent
years.
In
this
study,
characteristics,
preparation
methods,
efficiencies
mechanisms
hydrogel
reviewed.
The
main
features
photothermal
such
as
precious
metals,
semiconductors,
carbon‐based
materials,
polymer
also
comprehensively
analyzed.
addition,
applications
research
progress
hydrogels
fields
seawater
evaporation,
wastewater
purification,
organic
compound
degradation,
photocatalytic
hydrogen
production,
carbon
dioxide
examined.
Finally,
prospects
challenges
associated
with
evaluated.
This
study
expected
positive
significance
efficient
utilization
International Journal of Thermofluids,
Journal Year:
2024,
Volume and Issue:
22, P. 100595 - 100595
Published: Feb. 9, 2024
Nanofluids,
which
are
fluid
suspensions
containing
nanoparticles,
exhibit
remarkable
property
enhancements
even
at
low
nanoparticle
concentrations.
Much
of
the
research
on
nanofluids
aims
to
understand
their
behavior
for
applications
where
heat
transfer
enhancement
is
crucial,
spanning
industrial,
nuclear,
transportation,
electronics,
biomedical,
and
food
sectors.
Notably,
can
act
as
smart
fluids,
allowing
controlled
modulation
transfer.
This
paper
presents
an
overview
recent
advances
in
nanofluid
research,
covering
preparation
techniques
a
wide
range
existing
potential
energy,
mechanical
engineering,
biomedicine.
Furthermore,
highlights
avenues
future
this
field.
In
light
findings,
concludes
that
comprehensive
hybrid
model
understanding
thermophysical
properties
lacking.
Further
exploration
additional
unexplored
aspects,
particularly
deemed
essential.
To
capture
entirety
our
study,
graphical
abstract
provides
representation.
International Journal of Thermofluids,
Journal Year:
2024,
Volume and Issue:
22, P. 100710 - 100710
Published: May 1, 2024
This
study
investigates
the
dynamic
behavior
of
natural
ester-based
ferrous
oxide
(Fe3O4)
nanofluid
flow
around
an
unsteady
contracting
cylinder
under
influence
a
magnetic
field,
heat
generation,
and
homogeneous-heterogeneous
reactions.
The
governing
equations
for
flow,
transfer,
chemical
reactions
are
solved
numerically
using
appropriate
mathematical
models.
bvp4c
built-in
MATLAB
package
is
applied
to
address
complexity
problem.
effects
reactive
chemistry
on
temperature
distribution,
species
concentration
profiles
analysed
comprehensively.
As
part
validation
process,
we
validate
reliability
our
findings
by
comparing
them
established
benchmarks.
Motivated
increasing
interest
in
environmentally
friendly
sustainable
fluid
mediums,
esters
chosen
as
base
due
their
biodegradability,
low
toxicity,
excellent
insulating
properties.
research
aims
provide
valuable
insights
into
optimizing
processes
involving
magnetohydrodynamic
systems
with
utilizing
promising
alternative
conventional
fluids.
Insights
gained
from
this
offer
potential
applications
various
engineering
industrial
contexts,
contributing
advancement
eco-friendly
technologies.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Feb. 22, 2025
The
ongoing
pursuit
of
efficient
solar
thermal
energy
systems
has
driven
significant
interest
in
the
development
advanced
nanofluids,
particularly
those
utilizing
carbon-based
nanostructures
such
as
graphene
nanoplatelets
(GNP)
and
carbon
nanotubes
(CNTs).
These
materials,
when
dispersed
base
fluids
like
water
or
ionic
liquids,
have
gained
attention
for
their
tunable
thermophysical
properties,
including
conductivity,
viscosity,
specific
heat
capacity.
This
positioned
them
promising
candidates
enhancing
performance
collectors.
However,
literature
examining
direct
experimental
comparisons
between
behavior
GNP-based
CNT-based
both
liquid
media,
remains
sparse.
Similarly,
studies
evaluating
how
nanofluids
affect
overall
efficiency
collectors
are
limited
fragmented.
study
investigates,
first
time,
application
ionanofluids
(INFs)
commercial
hybrid
photovoltaic-thermal
(PVT)
INFs
were
prepared
using
GNP
1-ethyl-3-methylimidazolium
acetate
([Emim]
Ac)
liquid.
Their
density,
capacity,
comprehensively
characterized.
Long-term
stability
was
also
assessed
to
ensure
consistent
over
time.
Comparative
tests
with
pure
revealed
that
exhibited
a
significantly
higher
temperature
rise
within
collector,
attributed
lower
resulted
an
exergy
improvement
5%
compared
alone,
underscoring
potential
transfer
high-temperature
systems.
findings
highlight
novelty
applications
pave
way
future
research
optimizing
nanofluid
compositions
renewable
Hybrid Advances,
Journal Year:
2024,
Volume and Issue:
5, P. 100140 - 100140
Published: Jan. 10, 2024
Semiconducting
nanofluids
(SNFs)
consisting
of
poly
(ethylene
glycol)
(PEG200)
as
a
green
biocompatible
base
fluid
with
homogeneous
dispersion
eco-friendly
zinc
oxide
(ZnO)
nanomaterial,
concentrations
ranging
from
0.01
to
0.20
wt%,
are
prepared
by
state-of-the-art
ultrasonic
cavitation
homogenized
process.
These
PEG200/ZnO
SNFs
characterized
employing
an
ultraviolet-visible
(UV-Vis)
spectrophotometer,
precision
inductance-capacitance-resistance
(LCR)
meter,
and
rotational
viscometer.
A
detailed
analysis
200–800
nm
range
UV–Vis
absorbance
spectra
these
revealed
longer
stability
suspended
ZnO
nanoparticles
in
PEG200
fluid,
their
nanomaterial
dependent
extinction
coefficient
tunable
dual
energy
band
gaps
3
5
eV.
Optical
performance
recognized
the
potential
applications
advances
soft
matter
based
optoelectronic
photosensitive
devices
also
excellent
UV
radiation
shielding
material.
The
study
20
Hz
–
1
MHz
dielectric
electrical
explained
that
have
significant
impact
on
conductivity
SNFs,
while
permittivity
electrode
polarization
relaxation
process
marginally
altered.
High
static
(∼
22)
low
about
μS/cm
order,
at
303.15
K,
evidence
suitability
storage
devices.
rheological
behaviour
materials
is
carried
out
different
temperatures
323.15
which
illustrates
Newtonian
characteristics
moderate
dynamic
viscosity
activation
could
be
utilized
effective
heat
transfer
photovoltaic/thermal
systems.
