Heat transfer treatment of system during freezing with implement of nanoparticles
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
58, С. 104410 - 104410
Опубликована: Апрель 18, 2024
The
present
attempt
investigates
solidification
through
a
tank
equipped
with
T-shaped
fins,
crucial
aspect
of
cold
storage
technology.
Utilizing
the
Finite
Element
Method
(FEM)
for
simulation,
implementation
mesh
adaptation
technique
enhances
accuracy
modeling.
Equations
are
derived
based
on
assumption
neglecting
velocity
effects
during
solidification,
simplifying
mathematical
framework
analysis.
Validation
numerical
approach
is
conducted
comparisons
previously
published
works,
affirming
reliability
methodology.
A
notable
study
utilization
nanosized
powders
dispersed
within
water,
serving
to
bolster
system
performance.
This
innovative
water
conductivity,
thereby
augmenting
rate
storage.
Employing
greater
shape
factor
yields
promising
results,
leading
discernible
decrease
in
completion
time
by
approximately
10.6%,
attributed
heightened
conductivity
facilitated
nanomaterial.
Furthermore,
investigation
explores
impact
varying
volume
fractions
particles
time,
revealing
significant
reduction
32.78%
higher
particle
volumes.
Язык: Английский
Analyzing porous cold storage unit in presence of hybrid nano-powders considering Galerkin method
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
61, С. 104899 - 104899
Опубликована: Авг. 2, 2024
The
article
presents
a
comprehensive
simulation
study
on
cold
storage
porous
containers,
employing
the
Galerkin
method
to
analyze
their
thermal
behavior.
A
key
focus
of
investigation
is
incorporation
both
radiation
and
conduction
modes
within
mathematical
model,
acknowledging
significant
roles
in
freezing
process.
To
enhance
rate,
hybrid
nanoparticles
are
introduced
into
H2O,
aiming
speed
up
solidification.
Notably,
integrates
adaptive
grid
techniques
achieve
higher
modeling
accuracy,
with
verification
processes
confirming
high
level
agreement
between
results
experimental
data.
This
research
also
underscores
potential
for
improved
energy
efficiency
systems,
contributing
sustainability
natural
resources
by
reducing
consumption
enhancing
overall
systems.
Through
meticulous
examination,
explores
impacts
various
factors
freezing,
including
fraction
nano-powders
(ϕ),
porosity
(γ),
factor
(Rd).
Remarkably,
introduction
media
causes
substantial
increment
resulting
an
improvement
approximately
91.19
%.
Moreover,
inclusion
term
model
significantly
reduces
completion
time
30.85
%,
underscoring
importance
considering
effects
such
Additionally,
dispersing
water,
decrement
around
7.21
approach
highlights
optimizing
use
applications,
thereby
promoting
conservation
sustainable
management
resources.
Язык: Английский
Simulation of storage of cold energy considering unsteady conduction mechanism in mathematical model
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
59, С. 104591 - 104591
Опубликована: Май 19, 2024
To
enhance
system
productivity,
fins
were
incorporated
into
the
container,
and
PCM
(phase
change
material)
infused
with
alumina
nanoparticles
was
introduced.
Mathematical
modeling
employed
to
evaluate
current
problem,
a
specific
focus
on
utilizing
water
as
for
achieving
fastest
solidification
process.
The
integration
of
fins,
PCM,
nano-powders
introduces
novel
dimension
research,
providing
unique
insights
enhancing
processes.
surrounding
cold
walls
container
play
crucial
role
in
solidification,
primarily
through
conduction.
low
speed
H2O
allows
its
neglect
simulation.
developed
mathematical
model
this
work
comprises
two
equations.
While
considering
larger
powder
sizes
improves
particle
interaction,
negative
impact
sedimentation
diminishes
conductivity.
addition
results
41.34%
enhancement
rate.
Furthermore,
altering
diameter
from
thirty
40
nm
reduces
completion
time
about
19.98%,
whereas
an
increase
50
elevates
it
by
49.37%.
Язык: Английский
Thermal assessment of cold storage process involving nanomaterial via numerical approach
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
60, С. 104805 - 104805
Опубликована: Июль 14, 2024
The
primary
aim
of
this
study
is
to
extend
a
numerical
approach
aimed
at
improving
the
efficiency
solidification
process.
Two
key
strategies,
namely
scattering
nano-powders
and
installation
fins,
were
employed
intensify
freezing.
By
approximating
neglecting
influence
velocity
terms,
final
equations
streamlined
form
mathematical
model.
To
enhance
accuracy,
mesh
adaptation
was
integrated
with
Galerkin
method
for
solving
Various
scenarios
examined
assess
impression
both
shape
concentration
on
A
significant
correlation
observed
between
additives
conduction,
causing
in
decrement
required
time
by
approximately
32.8
%.
Furthermore,
modifying
selecting
those
higher
factor
substantially
improved
freezing
efficiency,
resulting
an
increase
10.89
Язык: Английский
Transient modeling of storage of cold energy in existence of nano-sized additives
Journal of Energy Storage,
Год журнала:
2024,
Номер
92, С. 112216 - 112216
Опубликована: Май 29, 2024
Язык: Английский
Effect of mass ratio on flame propagation behaviors and thermal radiation performance of Al–AlH3 composite dust
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
61, С. 104888 - 104888
Опубликована: Июль 24, 2024
Aluminum
(Al)
is
a
high-energy
density
fuel
additive
commonly
used
in
solid
composite
propellants.
However,
Al
dust
will
form
dense
oxide
layer,
which
reduce
activity.
hydride
(AlH3)
can
release
hydrogen,
destroying
the
film
structure
and
releasing
more
energy.
In
this
paper,
flame
thermal
radiation
characteristics
of
Al–AlH3
explosion
with
different
mass
ratios
were
studied
experimentally.
The
results
indicate
that
under
same
ratio,
propagation
height,
velocity,
surface
temperature
system
show
trend
first
increasing
then
decreasing.
With
decrease
Al,
increase
gradually,
maximum
values
420
mm,
17.9
m⋅s−1,
2033
°C,
respectively.
AlH3
content,
releases
H2,
lead
to
enhancement
reaction
intensity.
Based
on
experimental
semi-empirical
static
models,
heat
flux
calculated.
Compared
quasi-static
process
tube
side,
value
vertical
greater
than
calculated
value.
Therefore,
model
modified
by
introducing
λ.
It
provides
theoretical
basis
for
explosions
confined
tubes.
Язык: Английский