Journal of Advanced Thermal Science Research,
Год журнала:
2023,
Номер
10, С. 59 - 74
Опубликована: Дек. 20, 2023
Artificial
activities,
environmental
factors,
and
industrial
production
lead
to
periodic
fluctuations
in
electricity
consumption,
necessitating
peak-shaving
measures
ensure
efficient
stable
operation
of
the
power
grid.
The
Carnot
battery
system
represents
an
effective
solution
due
its
high
efficiency
convenience.
In
this
paper,
we
propose
a
novel
based
on
dual-function
unit
establish
thermodynamic
economic
models.
This
paper
proposed
simple
reversible
heat
pump-organic
Rankine
cycle
system,
where
compression
expansion
was
developed
simplify
reduce
investment
costs.
Subsequently,
considering
unsaturated
operating
conditions
that
occur
during
practical
operation,
comprehensive
performance
analysis
is
conducted
by
varying
pressure
temperature
parameters.
Afterward,
exergy
performed
determine
losses
components
for
subsequent
optimization.
results
indicate
drop
has
detrimental
effect
system.
When
15
kPa,
achieves
power-to-power
ratio
(P2P),
levelized
cost
storage
(LCOS),
27.57%,
0.66
$/kW∙h,
62.8%.
However,
also
leads
increased
evaporator,
resulting
decreased
efficiency.
evaporator
exhibits
highest
loss,
with
maximum
loss
21.16
kW
among
all
components.
Undercharging
mode,
condenser
shows
lowest
64.43%.
Journal of Energy Storage,
Год журнала:
2024,
Номер
97, С. 112979 - 112979
Опубликована: Июль 18, 2024
In
a
scenario
driven
by
non-programmable
renewable
energy
sources
(RES)
being
integrated
into
the
grid,
there
is
critical
need
for
large-scale
storage
solutions
maintaining
grid
stability
and
providing
services
of
frequency
regulation
as
currently
provided
conventional
thermal
power
plants.
Among
various
options,
Carnot
batteries
stand
out
their
ability
to
provide
GWh
scale
without
geographical
limitations,
at
reasonable
costs,
integrating
heat
technologies
(TES),
however
cost
relatively
low
Round
Trip
Efficiencies
(RTE).
This
study
delves
new
concept
in
battery
called
Thermally
Integrated
Pumped
Thermal
Electricity
Storage
(TI-PTES)
utilizing
sCO2
pump
cycles.
integration
source
charging
cycle
leads
attractive
Efficiency(RTE)
values
compared
PTES.
Additionally,
using
supercritical
carbon
dioxide
(sCO2)
working
fluid
offers
several
advantages
compact
designs
leading
reduced
overall
footprint
other
fluid-based
technologies.
The
analyzes
thermo-economic
performance
based
TI-PTES
an
in-house
tool
WTEMP-EVO;
industrial
PTES
system
while
exploiting
market
available
options
through
mapping
approach.
