Energy Science & Engineering,
Journal Year:
2022,
Volume and Issue:
10(12), P. 4814 - 4839
Published: Sept. 30, 2022
Abstract
Due
to
the
low
thermal
conductivity
of
phase
change
material
and
diffusion
inside
material,
this
study
seeks
improve
melting
response
a
triple‐tube
latent
heat
storage
system
via
employing
annular
fins
by
optimizing
their
structural
parameters,
including
fin
number,
location,
dimensions.
Natural
convection
effects
are
numerically
evaluated
considering
different
numbers
locations
fins,
4,
10,
16,
20,
30
in
vertical
orientation.
The
attached
inner
outer
sides
annulus,
accommodating
between
center
tubes.
fins'
number
location
identical
on
both
volume
is
same
across
all
scenarios
evaluated.
results
show
that
higher
used,
greater
communication
layers
charge,
resulting
faster
rate
storage.
limited
natural
effect
lower
at
exchanger's
bottom,
an
additional
added,
its
thickness
assessed.
case
with
equal
thickness,
is,
original
new
fin,
performs
best
performance
compared
for
cases
added
thicknesses
0.5,
1,
2
mm.
Eliminating
extra
from
base
increases
charging
time
53.3%,
reduces
44%.
overall
bottom
1549
s
which
85.8%,
34.2%,
18%,
8.8%
than
20
respectively.
This
reveals
further
attention
should
be
given
position
optimize
mechanism
phase‐changing
materials‐based
systems.
ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(12), P. 11087 - 11219
Published: May 23, 2023
Serious
climate
changes
and
energy-related
environmental
problems
are
currently
critical
issues
in
the
world.
In
order
to
reduce
carbon
emissions
save
our
environment,
renewable
energy
harvesting
technologies
will
serve
as
a
key
solution
near
future.
Among
them,
triboelectric
nanogenerators
(TENGs),
which
is
one
of
most
promising
mechanical
harvesters
by
means
contact
electrification
phenomenon,
explosively
developing
due
abundant
wasting
sources
number
superior
advantages
wide
availability
selection
materials,
relatively
simple
device
configurations,
low-cost
processing.
Significant
experimental
theoretical
efforts
have
been
achieved
toward
understanding
fundamental
behaviors
range
demonstrations
since
its
report
2012.
As
result,
considerable
technological
advancement
has
exhibited
it
advances
timeline
achievement
proposed
roadmap.
Now,
technology
reached
stage
prototype
development
with
verification
performance
beyond
lab
scale
environment
commercialization.
this
review,
distinguished
authors
world
worked
together
summarize
state
art
theory,
devices,
systems,
circuits,
applications
TENG
fields.
The
great
research
achievements
researchers
field
around
over
past
decade
expected
play
major
role
coming
fruition
unexpectedly
accelerated
next
decade.
