Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 9, 2024
For
an
enhancement
of
the
thermal
and
electrical
conductivity
proton
exchange
membrane
fuel
cell
(PEMFC),
extensive
research
is
actively
conducted
on
various
waste
bio
sources.
PEMFC
offers
cleanest
form
energy,
electrochemical
energy
conversion
device
that
possesses
zero
emissions
with
by-products
such
as
heat
water.
In
PEMFC,
conventional
coolants
water
water:ethylene
glycol
mixture
does
not
attain
substantial
results
in
terms
dissipation,
which
impacts
performance
gradually
reduces
operating
life
cell.
Usually,
bio-sources
are
environmentally
friendly
have
merits
over
chemically
prepared
methods.
Bio-based
nanofluids
remarkable
transfer,
lower
conductivity,
low
corrosiveness
system
compared
to
other
metal-based
fluids
base
fluids,
also
gained
a
great
deal
scrutiny
past
few
decades.
this
research,
bio-sourced
Cocos
nucifera
shell
(CNS)
utilised
at
concentrations,
0.1
vol.-%,
0.3
vol.-%
0.5
dispersed
fluid
(W),
ethylene
(EG)
(80:20)
analysed
prior
actual
full
stack
PEMFC.
Consequently,
transfer
has
been
improved
by
13%
for
CNS
80:20
(W:EG)
0.5%
volume
concentration
W:EG
(80:20).
On
basis
findings
thermal,
hydraulic
properties
determined.
Despite
drawbacks
experimental
design,
it
was
concluded
up
nanofluid
could
be
used
cooling
medium
PEMFCs
no
adverse
effects
performance.
It
observed
efficiency
cells
reducing
ohmic
losses.
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
59, С. 104577 - 104577
Опубликована: Май 20, 2024
The
study
aims
to
enhance
the
reliability
of
direct
thermal
energy
storage
(TES)
using
phase
change
materials
(PCMs)
and
nanoparticles,
ensuring
sustained
heat
supply
even
during
periods
low
or
intermittent
solar
radiation.
specifically
investigates
a
TES
system
comprising
double-cylindrical
shell
container
with
two
distinct
PCM
types:
petroleum
jelly
petrolatum
1%
Al2O3
nanoparticles
by
volume
in
outer
wax
inner
shell.
Additionally,
redesigned
exchanger
is
employed
improve
heating
efficiency.
examines
configurations:
an
open
closed
water
tank.
deliberate
strategy
augmenting
aimed
at
enhancing
transfer
both
charging
discharging
phases.
performance
configurations
compared,
focus
on
highlighting
temperature
profiles
processes.
incorporation
PCMs
led
significant
enhancement
efficiency,
two-phase
case
achieving
highest
efficiency
73%.
Furthermore,
utilization
resulted
improvement
approximately
5%.
These
findings
demonstrate
potential
dual
layers
NPs
additives
systems.
Nanomaterials,
Год журнала:
2024,
Номер
14(13), С. 1126 - 1126
Опубликована: Июнь 29, 2024
Phase
change
materials
(PCMs)
are
that
exhibit
thermal
response
characteristics,
allowing
them
to
be
utilized
in
the
biological
field
for
precise
and
controllable
temperature
regulation.
Due
considerations
of
biosafety
spatial
limitations
within
human
tissue,
amount
PCMs
used
medical
applications
is
relatively
small.
Therefore,
researchers
often
augment
with
various
enhance
their
performance
increase
practical
value.
The
dispersion
nanoparticles
modify
thermophysical
properties
has
emerged
as
a
mature
concept.
This
paper
aims
elucidate
role
nanomaterials
addressing
deficiencies
enhancing
PCMs.
Specifically,
it
discusses
methods
stabilization
mechanisms
PCMs,
well
effects
on
such
conductivity,
latent
heat,
specific
heat
capacity.
Furthermore,
explores
how
nano-additives
contribute
improved
conductivity
underlying
enhanced
heat.
Additionally,
potential
biomedical
fields
proposed.
Finally,
this
provides
comprehensive
analysis
offers
suggestions
future
research
maximize
utilization
applications.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(44), С. 23999 - 24012
Опубликована: Янв. 1, 2023
The
local
structure
evolution
and
thermophysical
properties
of
the
NaCl–KCl–MgCl
2
–LaCl
3
melt
were
thoroughly
understood,
which
facilitates
advancement
innovation
molten
salt
electrolytic
production
for
Mg–La
alloys.
