This
study
demonstrates
the
potential
of
waste
heat
recovery
using
transcritical-subcritical
parallel
ORC
with
various
working
fluids.
The
research
evaluates
cycle's
performance
thermodynamic
and
thermo-economic
models
consideration
five
different
Among
these
fluids,
R123
is
found
to
achieve
highest
exergy
efficiency
when
used
as
fluid
in
proposed
system.
To
assess
economic
performance,
concept
specific
investment
cost
(SIC)
employed,
which
quantifies
ratio
total
net
output
power.
results
indicate
that
offers
best
for
system,
resulting
lowest
SIC,
amounting
3107
$/kW.
On
other
hand,
R600a
produces
value
same
operating
conditions,
3688
findings
highlight
favorable
its
advantage
terms
SIC.
Conversely,
presents
under
similar
conditions.
Finally,
genetic
algorithm
(GA)
employed
perform
a
multi-objective
optimization
reveal
bi-objective
framework,
reaches
peak
at
47.62%,
aligning
SIC
2643
Chemosphere,
Год журнала:
2024,
Номер
353, С. 141420 - 141420
Опубликована: Фев. 18, 2024
The
optimal
utilization
of
biomass
relies
heavily
on
the
specific
material
and
individual
needs.
Cereal
by-products
can
potentially
be
employed
in
thermochemical
processes
such
as
pyrolysis
gasification.
To
compare
sources,
ultimate
analysis,
biochar
potential,
proximate
thermal
gravimetric
price
per
megajoule
generated
heat,
surface
texture,
availability
are
used.
A
global
survey
wastes
opportunities
for
heat
generation
is
presented
current
article.
Here,
nine
different
cereal-based
agricultural
waste
products
(barley,
wheat,
millet,
oats,
rice,
rye
straw,
sorghum
straw/stalk,
maize
cob)
studied.
compared
based
calorific
value,
water
content,
volatile
matter,
ash
content
chemical
composition,
bulk
density,
charring
properties,
availability,
transportation.
According
to
estimate,
156
million
metric
tonnes
year,
or
6%
India's
total
emissions,
could
eliminated
by
rice
husk
alone.
Wheat
straws,
other
hand,
cut
emissions
2%.
Additionally,
processing
these
feedstocks
might
result
production
40
GW
electrical
energy,
which
would
increase
installed
capacity
national
electric
grid
9%.
Energy Conversion and Management,
Год журнала:
2024,
Номер
307, С. 118376 - 118376
Опубликована: Апрель 3, 2024
Integrating
renewable
energy
sources
into
systems
is
crucial
for
sustainability
and
reducing
CO2
emissions.
The
sorption-enhanced
gasification
process,
when
combined
with
renewables,
offers
a
path
toward
sustainable
systems.
In
this
study,
novel
integration
of
solar-based
process
biomass
proposed,
aiming
electricity
hydrogen
generation.
entire
system's
performance
has
been
investigated
from
the
perspectives
energy,
exergy,
economics,
emergy
analysis.
Furthermore,
response
surface
methodology
employed
to
optimize
overall
system
in
terms
exergy
efficiencies
levelized
cost
energy.
study's
results
reveal
that
integrated
shows
its
optimum
operational
condition
at
steam-to-biomass
ratio
0.53
capture
efficiency
65
%.
determined
be
67.2
%
net
electrical
power
generation
5.251
MW.
whole
71.89
Optimization
report
7.87
$/MWh.
From
analysis
perspective,
indicate
introduced
system,
renewability
index
0.22,
low
dependency
on
non-renewable
inputs.
With
1.95,
qualifies
as
moderately
sustainable,
demonstrating
superior
compared
conventional
co-generation
Sustainable Cities and Society,
Год журнала:
2023,
Номер
102, С. 105163 - 105163
Опубликована: Дек. 25, 2023
Electricity
and
potable
water
are
two
vital
resources
for
the
world's
population.
A
pioneering
green
energy
storage
system
power
production
has
been
introduced
investigated
in
this
context.
The
innovative
integrates
compressed
air,
pumped
hydro,
thermal
storage,
along
with
multi-effect
desalination.
This
combination
enables
generation
of
without
exerting
any
adverse
impact
on
environment.
technology
manages
start-up
time
desalination
unit
by
using
a
low
allows
to
be
generated
throughout
day.
By
conducting
comprehensive
analysis
including
energy,
exergy,
economic,
exergoeconomic,
performance
carefully
examined
effect
various
parameters
also
considered.
Finally,
advantages
proposed
compared
conventional
system.
According
study,
round
trip
efficiency
total
cost
rate
have
calculated
as
62.18%
618.6
USD/hr
respectively.
Based
case
study
conducted
coastal
areas
state
California,
potential
generate
138
m3
88.11
MWh
electricity
per
could
lead
profit
27.65
million
dollars
payback
period
3.82
years.
