Hydrogen in Burners: Economic and Environmental Implications
Processes,
Год журнала:
2024,
Номер
12(11), С. 2434 - 2434
Опубликована: Ноя. 4, 2024
For
centuries,
fossil
fuels
have
been
the
primary
energy
source,
but
their
unchecked
use
has
led
to
significant
environmental
and
economic
challenges
that
now
shape
global
landscape.
The
combustion
of
these
releases
greenhouse
gases,
which
are
critical
contributors
acceleration
climate
change,
resulting
in
severe
consequences
for
both
environment
human
health.
Therefore,
this
article
examines
potential
hydrogen
as
a
sustainable
alternative
source
capable
mitigating
impacts.
It
explores
properties
hydrogen,
with
particular
emphasis
on
its
application
industrial
burners
furnaces,
underscoring
clean
high
density
comparison
fuels,
also
production
through
thermochemical
electrochemical
methods,
covering
green,
gray,
blue,
turquoise
pathways.
discusses
storage
transportation
challenges,
highlighting
methods
like
compression,
liquefaction,
chemical
carriers
(e.g.,
ammonia),
transport
via
pipelines
vehicles.
Hydrogen
mechanisms
optimized
burner
furnace
designs
explored,
along
benefits
lower
emissions,
contrasted
concerns
infrastructure
costs.
Additionally,
applications,
safety
concerns,
large-scale
adoption
addressed,
presenting
promising
yet
complex
fuels.
Язык: Английский
Hydrogen jet characteristics with an outwardly opening piezo injector
Physics of Fluids,
Год журнала:
2025,
Номер
37(3)
Опубликована: Март 1, 2025
Hydrogen
is
a
promising
renewable
energy
vector
for
decarbonizing
transportation,
offering
high
density
and
clean
combustion.
In
this
study,
experimental
investigation
of
hydrogen
jets
discharged
from
an
outwardly
opening
piezo
injector
(Bosch
HDEV4)
was
conducted.
The
HDEV4
suggested
by
the
Engine
Combustion
Network
(ECN)
to
investigate
injection
jet
mixing
dynamics
spark-ignition
direct
engines.
This
choice
based
on
injector's
compatibility
with
hydrogen,
its
comprehensive
characterization
in
literature,
suitability
open-access
research.
High-speed
z-type
Schlieren
imaging
employed
visualize
structure
time-resolved
evolution
within
constant
pressure
flow
vessel.
needle
lift
measured
using
high-magnification,
high-speed
photography.
shows
positive
correlation
increased
driving
voltage
some
fluctuations
after
reaching
fully
opened
position.
Jet-projected
area
tip
penetration
decrease
monotonically
ambient
pressure.
comparison
theoretically
predicted
experimentally
injected
mass
across
varying
pressures
enabled
estimating
discharge
coefficient
between
0.6
0.8.
Increasing
speeds
up
due
higher
momentum.
However,
pattern
remained
almost
unaltered
various
heating
temperatures.
self-similarity
parameter
enables
scaling
correlations
non-dimensional
voltages,
revealing
two-phase
linear
relationship
damping
stable
stages.
study
provides
valuable
data
ECN
community,
supporting
comparative
studies
serving
as
reference
validating
computational
fluid
simulations.
Язык: Английский
A Comprehensive Analysis of Characteristics of Hydrogen Operation as a Preparation for Retrofitting a Compression Ignition Engine to a Hydrogen Engine
Processes,
Год журнала:
2025,
Номер
13(3), С. 718 - 718
Опубликована: Март 2, 2025
Hydrogen
is
a
carbon-neutral
fuel,
so
in
theory
it
holds
enormous
potential.
The
use
of
hydrogen
as
fuel
for
traditional
internal
combustion
engines
becoming
increasingly
prominent.
authors
now
have
the
opportunity
to
retrofit
single-cylinder
diesel
research
engine
an
with
operation.
For
this
reason,
before
that
conversion,
they
prepared
comprehensive
review
study
regarding
hydrogen.
Firstly,
analyzes
most
essential
properties
terms
mixture
formation
and
compared
diesel.
After
that,
deals
indirect
direct
injection,
what
kind
processes
can
occur.
Since
there
possibility
pre-ignition,
backfire,
knocking,
process
be
dangerous
case
formation,
short
subsection
devoted
these
uncontrolled
phenomena.
next
shows
how
important,
many
ways,
special
spark
plug
ignition
system
are
part
provides
detailed
presentation
possible
chamber
design
operation
fuel.
last
section
reveals
parameters
focused
on
analyzing
hydrogen’s
process.
conclude
intake
manifold
injection
Heron-like
design,
system,
would
appropriate
solution.
Язык: Английский