This
paper
presents
an
evaluation
of
the
energetic,
exergetic,
and
exergoeconomic
performances
a
modified
auto-cascade
refrigeration
(MACR)
cycle
integrated
with
dual
evaporator
refrigerator
(DER)
to
determine
optimum
operating
conditions.
The
main
objective
is
reduce
compressor
discharge
temperature
enhance
performance.
Despite
ambient
35
℃,
MACR
achieved
remarkable
51.29%
reduction
in
when
condensing
was
reduced
10
℃
by
DER.
It
also
results
72.73%
compression
work
rate
significant
137.02%
increase
cooling
effect
compared
conventional
cycle.
Furthermore,
exhibits
notable
improvements
total
exergy
destruction
cost
75.23%
76.07%
reduction,
respectively.
Simultaneously,
efficiency
factor
increased
266.67%
179.15%,
achieves
energy
performance
60%
R170
mass
fraction
0.50
vapor
quality
at
condenser
outlet,
resulting
1.429
kW
rate,
COP
0.70,
26.66%.
40%
quality.
Case Studies in Thermal Engineering,
Journal Year:
2023,
Volume and Issue:
53, P. 103904 - 103904
Published: Dec. 12, 2023
In
order
to
achieve
a
sustainable
energy
future,
it
is
of
utmost
importance
harness
solar
for
the
production
liquid
hydrogen.
This
undertaking
justified
by
significant
role
that
hydrogen
plays
as
clean
and
highly
efficient
fuel
source,
effectively
addressing
pressing
concerns
regarding
greenhouse
gas
emissions
reducing
reliance
on
conventional
fossil
fuels.
An
additional
advantage
lies
in
easy
storage
transportation
capabilities
hydrogen,
making
viable
solution
across
diverse
sectors.
this
regard,
current
research
presents
novel
solar-powered
setup
consisting
parabolic
trough
collectors
(PTSCs),
sequential
organic
Rankine
cycle
(ORC),
liquefied
natural
(LNG)
regasification
unit,
module
dedicated
subsequent
liquefaction
A
meticulously
crafted
MATLAB
code
utilized
replicate
operations
proposed
system,
facilitating
thorough
examination
its
energy,
exergy,
environmental,
economic
performance.
The
system
exhibits
net
output
power
1.13
MW
possesses
capacity
produce
at
rate
34.92
kg/h,
featuring
levelized
cost
(LCOH)
3.59
$/kg.
Additionally,
encompasses
cooling
capability
192
kW.
From
an
environmental
perspective,
configuration
contributes
decrease
carbon
dioxide
255.96
kg/h.
After
conducting
dynamic
analysis
with
meteorological
data,
was
determined
has
potential
generate
annual
536.84
tons
San
Francisco.
Renewable energy focus,
Journal Year:
2024,
Volume and Issue:
48, P. 100546 - 100546
Published: Feb. 2, 2024
Replacing
fossil
fuel-based
systems
with
renewable
energy
resources
is
a
method
to
enhance
the
performance
of
layout
and
reduce
environmental
pollution.
The
gas
turbine
cycle
(GTC)
one
main
sources
consuming
natural
(NG)
in
combustion
chamber
(CC).
In
present
study,
theoretical
500
kW
CC-based
improved
by
replacing
NG
CC
solar
power
tower
(SPT)
converting
it
into
multi-generation
system.
waste
heat
recovery
GTC
done
hot
water
unit
an
inverse
Brayton
(IBC),
then
rejection
stage
IBC
exhausted
system
recovered
thermoelectric
generator
(TEG)
absorption
chiller.
Afterwards,
produced
TEG
fed
proton
exchange
membrane
electrolyzer
reverse
osmosis
desalination
for
hydrogen
potable
outputs.
4E
optimization
shows
that
exergy
efficiencies
(Configuration
1)
SPT-based
2)
are
equal
37.2%
9.12%,
respectively.
However,
economic
Configuration
2
better.
this
case,
total
cost
rate
142.1
$/h
15.14
$/GJ
comparison
145.5
31.58
1.
addition,
fuel
consumption
emissions
zero,
while
make
up
54.76%
Journal of Energy Storage,
Journal Year:
2024,
Volume and Issue:
88, P. 111556 - 111556
Published: April 6, 2024
This
research
paper
presents
an
in-depth
development
and
investigation
of
a
solar-based
energy
system
incorporating
thermal
storage
to
produce
electricity,
heat,
fresh
water,
hydrogen
cover
the
needs
community
for
better
sustainability.
The
proposed
integrated
utilizes
concentrated
solar
plant
generate
process
offering
novel
approach
address
growing
demand
diverse
outputs.
assessment
employs
first
second
laws
thermodynamics,
focusing
on
both
exergy
analyses.
A
dynamic
analysis,
using
real-world
data
where
available,
is
conducted
ensure
alignment
between
supply.
Two
distinctive
case
studies
are
presented
highlight
versatility
system.
In
study
1,
power
focuses
only
electricity
production.
calculations
made
based
assumption
that
6%
total
emitted
by
sun
stored.
work
found
be
316,466.00
kWh.
Additionally,
as
result
24-hour
1
exhibits
outstanding
performance,
reaching
efficiency
31.66%
33.36%,
respectively.
Emphasizing
enhanced
flexibility
help
contribute
tailored
successful
production
strategy.
Case
2
examines
integration
generation
with
heating
cooling
systems,
well
addressing
clean
water.
generation,
load,
load
capacities
obtained
1,299,247.95,
531,588.54,
555,708.16
kW/day,
system's
high-power
output
facilitates
daily
desalination
processes
production,
producing
29,018.10
kg
369,013.52
m3
water
in
single
day.
As
performance
provides
overall
efficiencies
20.68%
16.87%,
holistic
effectively
addresses
society's
line
sustainability
goals.
parametric
provide
valuable
insights
into
resilience
applicability
scenarios,
supporting
ongoing
efforts.
Beyond
reducing
carbon
emissions
improving
air
quality,
long-term
benefits
make
it
promising
solution
achieving
greener
more
resilient
communities,
acknowledging
need
overcome
challenges
its
implementation.
