Results in Engineering,
Journal Year:
2024,
Volume and Issue:
23, P. 102363 - 102363
Published: June 7, 2024
Combining
hydrogen
with
natural
gas,
a
hydrocarbon
fuel,
is
seen
as
critical
step
towards
reaching
net-zero
emissions
and
creating
cleaner
environment.
To
tackle
climate
change,
major
organizations
like
the
U.S.
Department
of
Energy,
Energy
Innovation,
International
Renewable
Agency
are
promoting
use
blended
gas.
This
approach
can
potentially
cut
in
half
compared
to
relying
solely
on
Using
Ansys
2022
R1
CHEMKIN
tool,
study
analyses
combustion
features
H2-CNG
(compressed
gas)
-air
mixtures,
considering
atmospheric
conditions
operational
parameters.
Blending
50
%
CNG
results
significant
changes,
including
an
increase
laminar
flame
speed
from
48.78
cm/s
71.52
cm/s.
As
content
blend
increases
0
%,
concentration
free
radicals
H,
O,
OH
rises
by
42.86
28.57
20.00
respectively,
these
values
at
pure
CNG.
NSGA-II
multi-objective
optimization
identified
that
hydrogen-blended
surpasses
radical
generation.
The
research
confirms
creates
promising
fuel
several
advantages.
When
combusted,
mixtures
exhibit
superior
characteristics,
increased
efficiency
through
formation
speed.
innovation
has
potential
significantly
reduce
carbon
footprint
contribute
achieving
neutrality
goals.
more
efficient
properties
offer
compelling
pathway
for
mitigating
change.
Case Studies in Thermal Engineering,
Journal Year:
2024,
Volume and Issue:
60, P. 104729 - 104729
Published: June 19, 2024
A
numerical
1D
model
was
developed
and
validated
using
the
measured
data
on
a
porous
tube
lab
experiment
for
hydrogen
generation
as
an
in-situ
combustion
(ISC)
byproduct,
detailed
parametric
study
performed.
This
work
explores
impacts
of
various
water
injection
parameters
hydrogen,
oil
recovery
factor
(ORF),
carbon
monoxide
thorough
analysis.
The
methodology
included
simulating
mutually
enriched
air
into
tube,
focusing
such
temperature,
quality,
flow
rates.
Key
findings
reveal
that
oxygen
ratio
in
oxidizer
substantially
influences
production
ORF,
with
increasing
from
1.65
×
103
cm3
to
3.0
cm3,
which
is
around
82
%
when
percentage
raised
50
95
%.
results
showed
employing
wet
instead
dry
increased
rate
by
roughly
four
times.
Variable
temperature
has
insignificant
ORF.
Increasing
steam
quality
opposed
effect
rate.
Additionally,
escalating
injected
3000
cm³/day
15000
boosts
10000
cm³
53400
cm³,
respectively.
In
this
study,
a
numerical
1D
model
was
developed
and
validated
using
the
measured
data
on
1porous
tube
lab
experiment
for
hydrogen
generation
as
an
in-situ
combustion
(ISC)
byproduct,
detailed
parametric
study
performed
same
porous
tube.
The
focuses
influences
of
injected
water
properties,
such
temperature,
quality,
flowrates
production
rate,
oil
recovery
factor
(ORF),
produced
carbon
monoxide,
main
syngas
component.
A
scenario
injecting
mutually
enriched
air
into
proposed
in
current
study.
Oxygen
ratio
oxidizer
has
substantial
impact
rate
ORF.
percentage
increases
significantly,
reaching
~82.0%,
when
oxygen
is
raised
from
50%
to
95%.
Employing
wet
instead
dry
increased
by
roughly
four
times.
Variable
temperature
insignificant
impacts
Increasing
steam
quality
opposed
effect
rate.
volume
flow
3000
cm3/day
15000
leads
increasing
10000
53400
cm3,
respectively.
