Journal of Mechanical Materials and Mechanics Research,
Год журнала:
2023,
Номер
6(2), С. 1 - 13
Опубликована: Апрель 23, 2023
Compact
heat
exchangers
(CHE)
improve
the
transfer
rate
with
lighter
weight
and
lower
volume
than
other
counterparts.
An
important
point
in
CHEs
is
their
higher
pressure
drop
relative
to
conventional
exchangers.
This
study
aims
investigate
some
proposed
models
of
these
with/without
vortex
generators
(VGs)
different
cases.
A
hot
fluid
temperature
350°C
flowing
through
tubes
a
cold
300°C
circulating
inside
shell
are
assumed.
To
this
end,
several
VGs
sinusoidal
wavy
shapes
designed
examined
amplitudes
sine
wave
lengths
determine
effects
parameters
on
along
exchanger
length.
In
2D
steady-state
laminar
flow,
governing
equations
discretized
using
finite
element
method
analyzed
for
Reynolds
numbers
400
1000
ANSYS
software.
Finally,
5.06%
increase
Nusselt
number,
amplitude
1
length
6
mm
quantitatively
indicated
best
performance
terms
(London
factor)
among
studied
Results in Engineering,
Год журнала:
2024,
Номер
21, С. 101777 - 101777
Опубликована: Янв. 11, 2024
This
paper
highlights
the
advancement
in
wind
energy
harvesting
using
piezoelectric
materials
to
produce
sustainable
power
generation.
It
is
a
highly
encouraging,
fascinating,
and
challenging
method
capture
from
materials.
The
purpose
of
this
research
evaluate
principal
characteristic
groups
that
affect
performance
provide
recommendations
for
further
improvement.
Piezoelectric
harvesters
(PEH)
can
electricity
low-power
electronic
devices,
which
additionally
possess
potential
boost
self-powered,
autonomous
devices.
objective
article
harvester
modeling
techniques.
After
establishing
fundamental
idea
Wind
Energy
Harvesters
(PWEHs),
it
next
examined
how
well
these
devices
function
structurally
where
their
stands
relation
various
phenomena,
including
vortex-induced
vibration,
flutter,
galloping.
A
cantilever
beam
connected
with
tip
body
typical
component
galloping
collection.
has
been
turned
into
mechanical
vibrations
ultimately
electrical
via
flutter
phenomena.
Fluttering-based
are
new
technology
provides
an
effective
replacement
conventional
turbines.
future
development
trend
PWEHs
anticipated.
most
current
developments
strategies
approaches
also
discussed
paper.
First,
materials,
then
shows
harvesters'
design.
displays
types
applications.
Finally,
some
challenges,
development,
recommendations.
International Journal of Thermofluids,
Год журнала:
2024,
Номер
22, С. 100689 - 100689
Опубликована: Май 1, 2024
Various
engineering
applications,
such
as
heat
exchangers,
air
conditioning
systems,
chemical
reactors,
and
refrigeration
make
use
of
enhanced
transfer
surfaces.
Numerous
methods
have
been
explored
to
improve
rates
reduce
the
size
cost
equipment
involved,
particularly
in
exchangers.
This
review
comprehensively
assesses
multiple
continuous
discrete
swirl-inducing
techniques
for
enhancing
transfer,
achieved
through
geometry
alterations
or
flow
deflectors.
The
study
showed
that
all
angles
device
effectively
promoted
fluid
mixing,
reduced
thermal
boundary
layers,
created
turbulent
eddies
due
swirl
flows
vortices.
While
solid
may
impede
local
performance
by
trapping
low-velocity
heated
fluids
within
these
move
downstream,
they
lead
improved
transport
over
large
areas.
paper
explores
application
other
specific
work
environments.
Heliyon,
Год журнала:
2023,
Номер
9(6), С. e16390 - e16390
Опубликована: Май 24, 2023
Heat
transfer
in
water
with
the
help
of
solar
energy
is
an
effective
way
to
harness
renewable
and
reduce
reliance
on
non-renewable
sources
energy.
The
utilization
turbulent
promoters
efficient
solution
ameliorate
performance
heat
exchangers
(HE).
current
work
summarizes
experimental
numerical
behaviour
HE
reported
literature,
including
thermal
examinations
HT
fluid
flow
characteristics
various
tube
arrangements.
This
article
reviews
multiple
studies
which
different
twisted
tape
(TT)
geometry
enhances
rate
tubes.
also
compares
(η)
TT
configurations
tubes
using
correlations
developed
by
investigators.
Maximum
minimum
friction
factor
concerning
utilized
system
may
produce
optimal
form
for
tapes.
