Journal of Transport System Engineering,
Год журнала:
2024,
Номер
unknown, С. 28 - 35
Опубликована: Дек. 26, 2024
This
paper
presents
a
comprehensive
analysis
of
new
concept
heat
exchanger
for
Ocean
Thermal
Energy
Conversion
(OTEC)
applications.
The
study
utilizes
Computational
Fluid
Dynamics
(CFD)
simulations
to
evaluate
the
performance
different
designs
extracting
thermal
energy
from
oceanic
sources,
specifically
using
water
and
R717
liquid.
Key
parameters
including
cold
vapor
fraction,
temperature
difference,
pressure
drop
are
evaluated
through
combination
numerical
experimental
validations.
fraction
provides
insights
into
evaporation
rates
their
distribution
across
multiple
prototypes,
highlighting
impact
wetted
area
on
transfer
effectiveness.
evaluation
differences
reveals
variations
in
discharge
fluid
temperatures,
with
some
prototypes
deviating
thermodynamic
principles
at
default
frequency
0.1.
Various
frequencies
simulated
compared
data
select
optimal
each
prototype.
experiments,
conducted
under
similar
conditions,
ensure
accurate
validation
despite
inconsistencies
arising
design
boundary
conditions.
demonstrates
effectiveness
three
Prototype
2
achieving
highest
up
59%
OTEC
findings
contribute
better
understanding
provide
valuable
optimization
future
application
development.
emphasizes
significance
efficient
highlights
potential
ocean
as
renewable
sustainable
resource.
Proceedings of the Institution of Mechanical Engineers Part N Journal of Nanomaterials Nanoengineering and Nanosystems,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 13, 2025
An
innovative
new
generation
of
fluids
for
heat
transmission
is
sodium
alginate
(SA)
based
nanofluid.
Compared
to
normal
fluids,
these
fluids’
thermophysical
characteristics
are
quite
traditional.
This
study
examines
the
impact
nanoparticle
form
on
Al
2
O
3
(aluminium
oxide)-based
Cu-nanofluid
and
non-Newtonian
viscoplastic
(SA).
The
transverse
magnetic
field
affects
sheet
that
expanding
or
shrinking.
Four
distinct
morphologies
disseminated
nanoparticles
cylinders,
bricks,
blades,
platelets
within
an
assortment
with
a
Prandtl
number
Pr
=
6.50
make
up
not
compulsory
.
Non-linear
PDEs
condensed
into
structure
ODEs
by
proper
similarity
conversions,
equations
solved
analytically
numerically
beside
through
boundary
conditions
(BC).
Using
Runge–Kutta–Fehlberg
(RKF)
method,
altered
equations’
numerical
solutions
have
been
achieved.
Additionally,
use
built-in
differential
equation
solver
Solve
in
MAPLE
yields
analytical
answers.
investigates
effects
important
parameters
temperature
velocity
fields
nanofluid,
such
as
parameter
Eckert
number.
Our
outcomes
display
upsurges
all
shapes
increasing
parameter,
highest
thermal
augmentation
observed
platelets.
shape
has
significant
profiles;
brick
cylindrical-shaped
sustain
higher
flow
velocities
than
blades.
In
order
improve
control
nanofluid-based
systems,
this
offers
insights
optimizing
morphology.
According
quantitative
findings,
can
experience
increase
25%
when
compared
cylindrical
at
numbers.
High Temperature Materials and Processes,
Год журнала:
2024,
Номер
43(1)
Опубликована: Янв. 1, 2024
Abstract
The
thermal
conductivity
of
nanofluids
(NFs)
has
emerged
as
a
critical
area
research
due
to
its
potential
enhance
heat
transfer
in
various
industrial
applications.
Non-Newtonian
NFs,
particular,
exhibit
unique
flow
characteristics
under
the
influence
magnetic
fields,
making
them
suitable
for
systems
requiring
precise
control
fluid
dynamics,
such
cooling
electronics
and
energy
sectors.
Owing
usage,
this
article
presents
magneto-Marangoni
convective
(phase-I),
particle
(phase-II),
propagation
tangent
hyperbolic
NF
(copper–ethanol)
containing
maximum
cell
swimming
speed.
This
study
aims
evaluate
magnetized
non-Newtonian
NFs
mixed
with
dusty
particles
presence
radiation,
exploring
how
fields
interactions
affect
overall
performance.
Gegenbauer
wavelet
collocation-based
scheme
was
utilized
solve
model
investigate
physical
attributes
plate
friction,
Nusselt
number,
Sherwood
mass
flux.
results
indicate
that
species
reaction
field
is
increased
by
activation
energy,
whereas
it
reduced
chemical
reaction.
Also,
increasing
values
radiation
tend
improve
distribution.
