Energies,
Год журнала:
2024,
Номер
17(22), С. 5612 - 5612
Опубликована: Ноя. 9, 2024
This
paper
aims
to
discuss
the
internal
flow
and
cavitation
characteristics
of
petal
bionic
nozzle
holes
under
different
injection
pressures
improve
atomization
effect
methanol.
The
FLUENT
(v2022
R1)
software
is
used
for
simulation.
Schnerr-Sauer
model
in
Mixture
multiphase
adopted,
considering
evaporation
condensation
processes
methanol
fuel
accurately
simulate
performance.
new
hole
compared
with
ordinary
circular
analysis
ensure
research
reliability.
results
show
that
mainly
occurs
at
outlet,
which
can
enhance
effect.
In
terms
turbulent
kinetic
energy,
energy
greater
same
pressure.
At
1
MPa,
its
outlet
38.37
m2/s2,
about
2.3
times
hole.
When
pressure
from
0.2
MPa
maximum
temperature
increases
by
33.4%,
while
only
12.3%.
intensity
convection
vortex
significantly
reduced.
velocity
distribution
are
more
uniform.
general,
performance
stable,
beneficial
collision
fragmentation
droplets
has
better
uniformity
droplet
distribution.
It
a
positive
on
improving
intake
port
methanol-diesel
dual-fuel
engines.
Results in Engineering,
Год журнала:
2024,
Номер
22, С. 102066 - 102066
Опубликована: Март 31, 2024
The
accumulation
of
plastic
waste
poses
a
major
environmental
challenge,
while
the
conversion
plastics
into
oil
via
pyrolysis
holds
promise
as
an
alternative
energy
solution.
Despite
numerous
investigations
this
area,
none
have
focused
on
optimizing
process
parameters
for
higher
yield
and
enhancing
overall
performance
through
suitable
fuel
modification.
present
study
aims
to
optimize
parameters,
including
heating
rate
(HR),
temperature
(PT),
reaction
time
(RT),
achieve
(WPO)
enhance
by
blending
optimal
quantities
water.
Fuel
characterization
properties
measurement
were
conducted
using
Fourier
Transform
Infrared
ASTM
methods.
WPO
was
blended
with
conventional
diesel
(CDF)
different
volume
concentrations
water
(5%,
10%,
15%).
metrices
assessed
under
various
engine
conditions.
findings
indicate
that
optimum
condition
is
HR
17.3
°C/min,
PT
403
°C,
RT
96.30
min,
quality
confirms
its
suitability
source.
metrics
revealed
has
5.4%
lower
brake-thermal
efficiency
than
CDF,
inclusion
10%
in
(WPO10W)
enhances
11.5%.
in-cylinder
pressure
net-heat
release
are
1.3%
12.9%
respectively,
WPO10W
emulsion
promotes
efficient
combustion.
reduces
oxides
nitrogen,
hydrocarbon,
carbon
monoxide
emissions
21.2%,
9.8%,
22.2%,
compared
WPO.
Results in Engineering,
Год журнала:
2024,
Номер
22, С. 102177 - 102177
Опубликована: Апрель 26, 2024
Sustainable
energy
production
from
plant
waste
and
non-edible
seeds
offers
a
promising
pathway
towards
mitigating
climate
change,
reducing
environmental
impact,
promoting
economic
development,
enhancing
security.
Although
several
research
works
have
focused
on
the
conversion
of
Bauhinia
seed
to
biooil
as
sustainable
energy,
none
studies
attempted
improve
its
overall
performance
through
fuel
modification
parameter
optimization.
This
study
proposes
novel
approach
by
blending
water
2-Ethylhexyl
nitrate
(2-EHN)
into
racemose
biodiesel
(BRD)
minimize
emissions
enhance
performance.
The
properties
were
characterized
Fourier-transform
infrared
Gas
chromatography-mass
spectrometry
analysis.
optimum
levels
parameters,
such
BRD,
water,
2-EHN
in
conventional
diesel
(CD),
obtained
using
response
surface
methodology,
branding
it
greener
source
for
engine
applications.
Box-Behnken
design
matrix
was
chosen
categorize
input
factors,
levels,
output
responses.
Examination
reveals
that
carbon-based
constituents
make
significant
contribution,
physicochemical
align
with
ASTM
standards.
optimization
results
indicate
CD
are
20.33%,
10.26%,
2.05%,
respectively.
emission
metrics
closely
match
projected
values.
An
in-depth
examination
combustion,
vibration,
life-cycle
assessment,
techno-economic
analysis
provides
further
evidence
reinforce
findings
suggests
possible
avenues
future
research.
Results in Engineering,
Год журнала:
2024,
Номер
23, С. 102411 - 102411
Опубликована: Июнь 15, 2024
With
the
increasing
demand
for
sustainable
and
renewable
energy
sources,
biodiesel
has
emerged
as
a
promising
alternative
to
conventional
fossil
fuels.
This
study
presents
novel
approach
enhancing
Thevetia
peruviana
(TPB)
yield
from
plant
waste
by
optimizing
process
variables
using
Zinc
sulfide
(ZnS)
catalyst.
Co-precipitation
was
utilized
synthesize
ZnS
nanoparticles,
followed
comprehensive
characterization
SEM,
XRD,
EDAX,
FTIR.
Response
surface
methodology
employed
determine
optimal
values
parameters,
specifically
catalyst
concentration
(CC),
oil-to-alcohol
ratio
(OAR),
temperature
(PT).
The
results
demonstrate
that
nanoparticle
can
be
effectively
reused
over
five
successive
cycles
without
significant
loss
of
catalytic
activity.
condition
identified
CC
107.7
ppm,
OAR
8.9:1,
PT
94.6
°C,
yielding
TPB
92.5
%,
which
validated
through
confirmation
experiments.
nanocatalyst
exhibited
3.6
%
increase
compared
typical
chemical
ANOVA
revealed
had
43.9
influence
on
yield,
while
influences
33.2
22.9
respectively.
Elemental
analysis
indicated
10.9
times
higher
oxygen
diesel
fuel,
with
GC-MS
identifying
linoleic
acid
predominant
component.
elemental,
FTIR,
GC-MS,
physicochemical
were
found
comparable
standard.
assessment
suggests
potential
serve
viable
fuel.
Case Studies in Thermal Engineering,
Год журнала:
2024,
Номер
59, С. 104569 - 104569
Опубликована: Май 18, 2024
The
study
explores
the
impact
of
a
zinc
oxide
(ZnO)
induced
carbon
nanotube
(CNT)
nanocomposite
on
ammonia
decomposition
in
aqueous
(AA)
emulsified
diesel
fuel,
while
evaluating
performance
and
emissions.
Functionalized
CNTs
with
ZnO
underwent
structural
surface
morphology
analysis.
Different
concentrations
ammonium
hydroxide
(5%
10%)
were
mixed
plain
fuel
(PDF),
100
ppm
ZnO/CNT
was
blended
10%
AA
fuel.
Fuel
assessed
under
various
brake
power
conditions
compared
to
PDF.
results
demonstrate
that
absorption
latent
heat
by
its
higher
energy
result
longer
ignition
delay,
thereby
increasing
peak
in-cylinder
pressure
net
release
rate.
post-combustion
reaction
fuels
contributes
increased
specific
consumption
(BSFC),
(BSEC),
hydrocarbon
(HC),
monoxide
(CO),
smoke
opacity.
However,
dispersion
emulsion
enhances
catalytic
effect
promotes
decomposition,
resulting
combustion
characteristics
similar
Notably,
there
is
an
observed
improvement
BSFC
8.1%
BSEC
10.9%,
respectively.
Furthermore,
emission
metrics
such
as
oxides
nitrogen,
HC,
CO,
opacity
decrease
4.5%,
18.8%,
11.4%,
5%,
SAE technical papers on CD-ROM/SAE technical paper series,
Год журнала:
2025,
Номер
1
Опубликована: Янв. 28, 2025
<div
class="section
abstract"><div
class="htmlview
paragraph">Hydrogen
fuel
is
becoming
a
popular
choice
in
many
energy
applications
because
of
its
innovative
green
technology,
which
produces
zero
carbon
emissions.
It
also
offers
better
efficiency
than
fossil
fuels.
Current
research
focuses
on
obtaining
hydrogen
from
agricultural
waste
using
gasification
process.
This
process
involves
heating
the
at
temperatures
300,
400,
500,
600,
and
700°C,
maintaining
residence
time
60
minutes,
applying
pressure
20
bar.
The
effects
temperature
effectiveness
production
are
examined.
At
high
700°C
processed
agro
feedstock
showed
impressive
results.
achieved
molar
fraction
12%
dioxide
(CO<sub>2</sub>),
31%
methane
(CH<sub>4</sub>),
55%
(H<sub>2</sub>),
leading
to
an
improved
yield
15.2
mol/kg.
Additionally,
it
demonstrated
selectivity
8.1
higher
61%,
outperforming
results
other
temperatures.
Bio-green
used
as
alternative
for
purposes.</div></div>
