Energy Conversion and Management X,
Journal Year:
2021,
Volume and Issue:
12, P. 100150 - 100150
Published: Nov. 29, 2021
Phase
change
materials
(PCMs)
are
successful
thermal
energy
storage
mediums
in
many
systems,
including
buildings.
Identifying
the
best
PCM
candidate
is
a
critical
incorporation
parameter
that
influences
building
performance.
This
paper
discusses
selection
of
potential
candidates
could
be
applied
for
heating
applications
cold
locations.
A
qualitative
decision
matrix
(QDM)
several
commercial
PCMs
after
an
extensive
analysis
relevant
literature
studies.
The
melting
temperature,
heat
fusion,
conductivity,
compatibility,
flammability
and
cost
each
considered
QDM
to
find
most
suitable
with
effective
properties
features.
properties/features
assigned
scores
weights
based
on
their
importance
application.
Three
scenarios
investigated
this
work,
excluding
varying
equal
weights.
Results
showed
RT28HC
had
highest
score
all
scenarios,
followed
by
SavE®HS29
first
scenario
(when
included)
PureTemp
32
second
without
considering
cost.
methodology
results
presented
work
believed
as
efficient
logical
future
studies
compared
traditional
methods
rely
investigating
thermo-physical
properties.
Journal of Energy Storage,
Journal Year:
2022,
Volume and Issue:
56, P. 105872 - 105872
Published: Oct. 21, 2022
In
this
paper,
the
bioconvection
of
oxytactic
microorganisms
with
nano-encapsulated
phase
change
materials
(NEPCMs)
in
an
omega-shaped
porous
enclosure
is
considered
and
analyzed.
The
main
focus
study
to
examine
flow
a
suspension
containing
NEPCMs
together
novel
type
cavity,
namely,
enclosure.
thermophysical
properties
nanoparticles
are
assumed
be
dependent
on
core
shell.
Galerkin-based
finite
element
technique
(GFEM)
utilized
perform
simulations
proposed
configuration.
Adaptive
Newton's
method
invoked
treat
discrete
algebraic
systems.
implemented
FEM
code
has
been
validated
against
experimental
numerical
published
available
data
literature.
impact
various
controlling
parameters
heat
transfer
characteristics
examined
discussed.
major
findings
revealed
that
fusion
temperature
controls
intensity
position
melting
zone
towards
heated
irregular
boundary
within
Moreover,
Oxygen
Microorganisms
isoconcentration
enhanced
as
Rayleigh
number
grows.
Case Studies in Thermal Engineering,
Journal Year:
2023,
Volume and Issue:
44, P. 102853 - 102853
Published: March 1, 2023
Temperature
non-uniformity
on
chips
has
drawn
the
attention
of
researchers
due
to
unwanted
thermal
stress
development
resulting
in
a
reduction
their
life
cycle
and
performance.
In
present
investigation,
heat
transfer
flow
characteristics
coolant
micro-pin-fin
sink
with
variable
density
arrangement
have
been
conducted
numerically.
The
dimensions
are
18.0
mm
×
19.0
4.0
mm,
height
is
2
mm.
Circular
diameters
400,
500,
600
μm,
respectively
considered.
power
supply
50
W
source
area
10.0
Water
was
working
fluid
used
while
aluminum
for
solid
part
sink.
operating
pressure
drop
between
inlet
outlet
fixed
at
1500
Pa,
3000
5000
Pa.
Ansys-Fluent
employed
analysis.
results
indicate
that
temperature
uniformity
better
than
staggered
about
same
number
micro-pin-fins.
best
effective
resistance
noted
as
0.258
K/W
among
sinks
all
configurations.
addition,
difference
per
unit
length
convergent
5000Pa
diameter
μm
1.34
K/mm,
which
lower
previously
reported
literature.
