In
this
paper,
a
novel
gas
combustor
with
multiple
nozzles
is
proposed
to
couple
free-piston
Stirling
electric
generator
(FPSG)
for
distributed
power
application.
Due
the
simple
layout
of
and
intrinsic
external
combustion
FPSG,
system
highly
adaptive
fuels,
such
as
butane,
natural
liquefied
petroleum
(LPG).
order
unravel
heat
transfer
characteristics
internal
oscillating
flow,
rigorous
numerical
simulation
was
conducted,
series
experiments
were
carried
out
verify
calculations.
Initially,
an
in-depth
analysis
performed
in
terms
flow
field,
temperature
distribution
flux
density
within
combustor.
The
effects
inlet
rate,
nozzle
structure,
preheating
on
explored.
Numerical
calculations
reveal
that,
at
fuel
rate
0.55
Nm3/h
air-fuel
ratio
24,
high-temperature
exchanger
(HHX)
absorbs
6.41
kW
heating
power,
convective
occupying
approximately
73.5%.
Moreover,
simulations
unveil
significant
influence
optimizing
ratio,
enhancing
overall
performance
achieving
air
consumption
reductions.
Subsequently,
we
meticulously
conducted
experimental
investigations
comprehensively
evaluate
combustor-coupled
FPSG.
results
demonstrate
under
Nm3/h,
achieves
output
1531
W,
corresponding
net
thermal-to-electric
efficiency
fuel-to-electric
30.9%
9.6%,
respectively.
Applied Energy,
Год журнала:
2024,
Номер
361, С. 122884 - 122884
Опубликована: Март 5, 2024
This
article
offers
a
detailed
investigation
into
the
technical,
economic
along
with
environmental
performance
of
four
configurations
hybrid
renewable
energy
systems
(HRESs),
aiming
at
supplying
electricity
to
remote
location,
Henry
Island
in
India.
The
study
explores
combinations
involving
photovoltaic
(PV)
panels,
wind
turbines,
biogas
generators,
batteries,
and
converters,
while
evaluating
their
economic,
performance.
analysis
yield
that
among
all
examined,
PV,
turbine,
generator,
battery,
converter
integrated
configuration
stands
out
highly
favourable
results,
showcasing
minimal
value
levelized
cost
(LCOE)
$0.4224
per
kWh
lowest
net
present
(NPC)
$6.41
million.
However,
technical
comprising
PV
battery
yields
maximum
excess
output
2,838,968
kWh/yr.
Additionally,
machine
learning
techniques
are
employed
analyse
data.
shows
Bilayered
Neural
Network
model
achieves
exceptional
accuracy
predicting
LCOE,
Medium
proves
be
most
accurate
These
findings
provide
valuable
perception
design
optimisation
HRES
for
off-grid
applications
regions,
taking
account
aspects.
Energies,
Год журнала:
2024,
Номер
17(2), С. 414 - 414
Опубликована: Янв. 15, 2024
Nowadays,
increasing
the
penetration
of
renewable
heat
technologies
is
an
important
approach
to
minimise
global
primary
energy
use
and
reduce
CO2
emissions
for
a
sustainable
future.
Thermoelectric
pumps,
which
have
some
unique
characteristics
in
comparison
with
conventional
vapour
compression
can
be
integrated
solar
thermal
storage
form
promising
technology.
However,
currently,
reliable
numerical
model
TeHPs
suitable
building
simulation
lacking
benefits
achievable
TeHP
thanks
integration
are
unclear.
To
solve
these
issues,
this
work,
experimental
apparatus
consisting
water-to-air
unit
tank
modelled
tested
first
time,
under
scenarios
without
storage,
respectively.
The
results
found
that
developed
could
well
predict
output
performance
unit,
deviations
within
12%.
Additionally,
when
combined
better
than
terms
maximum
temperature
achieved
testing
box,
response
speed
coefficient
(COP)
unit.
This
work
not
only
paves
way
following
building-integrated
simulations
units,
but
also
provides
guidance
design
systems
include
storage.
Energy Conversion and Management,
Год журнала:
2024,
Номер
302, С. 118160 - 118160
Опубликована: Фев. 1, 2024
In
this
study,
a
hybrid
cogeneration
system
that
combines
photovoltaic-thermal
(PV-T)
collectors
with
Stirling
engine,
and
battery-pack-based
energy
option
is
proposed
for
residential
applications.
The
system’s
purpose
to
fulfil
the
electrical
heating
requirements
of
different
types
houses
in
United
Kingdom,
including
detached,
semi-detached
mid-terraced
houses.
This
study
includes
comprehensive
assessment
techno-economic
feasibility
environmental
impact
integrated
system,
after
determining
appropriate
sizing
components
three
house
types.
exergy
efficiency
detached
(with
1
kWe-Stirling
engine
plus
28
m2
PV-T
collector
array)
found
be
higher
compared
configurations,
highest
22
%.
terms
economic
performance,
have
lowest
levelized
cost
electricity
(0.622
£/kWh),
heat
(0.147
total
(0.205
£/kWh).
Furthermore,
demonstrates
maximum
potential
reduction
CO2
emissions
achieved
rates
configurations
fall
within
range
30
%
45
shows
promise
as
an
effective
sustainable
solution
meet
demands
various
offering
improved
efficiency,
cost-effectiveness,
substantial
reductions
carbon
