Energy,
Год журнала:
2021,
Номер
239, С. 122103 - 122103
Опубликована: Сен. 27, 2021
Due
to
heat
prosumers'
dual
roles
of
producer
and
consumer,
the
future
district
heating
(DH)
systems
will
become
more
flexible
competitive.
However,
current
price
models
have
not
yet
supported
reverse
supply
from
prosumers
central
DH
system,
which
means
would
gain
no
economic
benefit
supplying
system.
These
unidirectional
reduce
interest
in
prosumers,
thus
hinder
promotion
systems.
This
study
aimed
optimize
performance
under
by
introducing
water
tank
thermal
energy
storage
(WTTES).
A
dynamic
optimization
problem
was
formulated
explore
potentials.
The
size
parameter
WTTESs
swept
obtain
optimal
considering
trade-off
between
payback
period
cost
saving.
proposed
method
tested
on
a
campus
system
Norway.
results
showed
that
prosumer's
annual
saved
up
9%,
investment
WTTES
could
be
recovered
less
than
ten
years.
provide
guidelines
improving
promote
development
during
transformation
Renewable and Sustainable Energy Reviews,
Год журнала:
2021,
Номер
139, С. 110732 - 110732
Опубликована: Янв. 22, 2021
Seasonal
thermal
energy
storage
(STES)
holds
great
promise
for
storing
summer
heat
winter
use.
It
allows
renewable
resources
to
meet
the
seasonal
demand
without
resorting
fossil-based
back
up.
This
paper
presents
a
techno-economic
literature
review
of
STES.
Six
STES
technologies
are
reviewed
and
an
overview
representative
projects
is
provided.
The
key
project
parameters
operation
performances,
including
main
source
fraction,
efficiency,
density,
investigated
in
technical
review.
economic
viability
assessed
terms
levelized
cost
(LCOH),
volume
cost,
capacity
cost.
results
show
that
tank
pit
exhibits
relatively
balanced
better
performances
both
characteristics.
Borehole
aquifer
performance,
while
latent
thermochemical
performance.
Compared
reference
heating
alternatives,
i.e.,
natural
gas
solar
decentralized
systems,
only
low-temperature
economically
competitive.
LCOH
highest.
To
be
competitive
market,
needs
reduced
by
half
four
times
less.
Meanwhile,
decision
tree
selection
introduced
facilitate
practical
engineering.
In
compiling
data
this
review,
we
find
studies
limited
number
often
lack
transparency
their
reporting.
Going
forward,
should
improved
provide
more
solid
base
policymaking.
International Journal of Thermofluids,
Год журнала:
2021,
Номер
10, С. 100075 - 100075
Опубликована: Март 2, 2021
In
this
work,
technologies
related
to
the
storage
of
solar
energy,
utilizing
latent
heat
content
phase
change
materials
for
production
domestic
hot
water
are
reviewed.
Many
researchers
have
been
involved
in
field
order
accomplish
targets
environmentally
friendly
solutions
and
higher
efficiency.
For
use,
with
melting
temperature
between
40
80
°C
commonly
studied,
paraffins,
fatty
acids,
salt
hydrates
alcohols
being
most
popular.
harvesting
radiation,
usually
flat
plate
or
evacuated
tubes
collectors
used,
either
commercial
ones
modified.
The
unit
may
include
only
material
it
can
a
hybrid
form
combined
water.
outcome
studies,
is
that
addition
comparison
systems
without
storage,
increases
duration
release
towards
at
end
day
also
collector's
efficiency
because
does
not
experience
large
fluctuations.
However,
difficulties
emerge
during
selection
appropriate
as
must
high
provide
enough
water,
but
than
collector
produce,
fully
melt
material.
Moreover,
investigation
necessary
optimum
flow
rate
minimizes
charging
maximizes
system
amount.
Another
challenge
face
low
thermal
conductivity
many
materials.
purpose,
methods
improving
performance
examined
they
reported.
Renewable and Sustainable Energy Reviews,
Год журнала:
2022,
Номер
167, С. 112760 - 112760
Опубликована: Июль 20, 2022
Seasonal
thermal
energy
storage
can
provide
flexibility
to
smart
systems
and
are
characterised
by
low
cost
per
unit
capacity
varying
applicability
different
geographical
geological
locations.
This
paper
identifies
applications
reviews
modelling
approaches
for
seasonal
technologies
in
the
context
of
their
integration
systems.
An
example
district-scale
system
is
outlined
analyse
three
potential
storage:
(i)
utilisation
multiple
renewable
sources,
(ii)
integrating
waste
heat
cool,
(iii)
electrical
network
balancing.
The
rest
focuses
on
methods
borehole
aquifer
analysis.
Energy
tools
planning
detailed
design
stages
reviewed.
Gaps
identified
control
strategies
open
code.
TRNSYS
found
be
dominant
tool
used
model
large-scale
storage.
Co-simulation
involving
physics
power
also
reviewed,
including
studies
using
co-simulation
a
represent
or
alongside
an
tool.
A
gap
exists
models
with
capable
simulating
both
electricity
heat.
In
conclusion,
through
at
scales,
offer
promising
avenue
capturing
benefits
these
applications.
International Journal of Energy Research,
Год журнала:
2020,
Номер
44(6), С. 4163 - 4195
Опубликована: Янв. 28, 2020
Because
of
the
unstable
and
intermittent
nature
solar
energy
availability,
a
thermal
storage
system
is
required
to
integrate
with
collectors
store
retrieve
it
whenever
required.
Thermal
not
only
eliminates
discrepancy
between
supply
demand
but
also
increases
performance
reliability
systems
plays
crucial
role
in
conservation.
Under
this
paper,
different
methods,
heat
transfer
enhancement
techniques,
materials,
fluids,
geometrical
configurations
are
discussed.
A
comparative
assessment
various
methods
presented.
Sensible
involves
storing
within
medium
by
increasing
temperature
without
undergoing
any
phase
transformation,
whereas
latent
material
during
transition
phase.
Combined
novel
approach
combining
both
sensible
storage.
Based
on
literature
review,
was
found
that
most
researchers
carried
out
their
work
media
fluids.
Limited
combined
sensible-latent
materials
fluids
so
far.
Further,
reported
have
promising
approach,
as
reduces
cost
stabilized
outflow
from
system.
The
studies
discussed
presented
paper
may
be
helpful
carry
further
research
area.
Applied Sciences,
Год журнала:
2020,
Номер
10(9), С. 3142 - 3142
Опубликована: Апрель 30, 2020
Power
systems
in
the
future
are
expected
to
be
characterized
by
an
increasing
penetration
of
renewable
energy
sources
systems.
To
achieve
ambitious
goals
“clean
transition”,
storage
is
a
key
factor,
needed
power
system
design
and
operation
as
well
power-to-heat,
allowing
more
flexibility
linking
networks
heating/cooling
demands.
Thermochemical
coupled
power-to-heat
receiving
attention
due
their
better
performance
comparison
with
sensible
latent
heat
technologies,
particular,
terms
time
dynamics
density.
In
this
work,
comprehensive
review
state
art
theoretical,
experimental
numerical
studies
available
literature
on
thermochemical
thermal
use
applications
presented
focus
sources.
The
paper
shows
that
series
advantages
such
additional
flexibility,
load
management,
quality,
continuous
supply
variable
could
crucial
elements
increase
commercial
profitability
these
Moreover,
specific
challenges,
i.e.,
life
span
stability
material
high
cost
power-to-heat/thermochemical
must
taken
consideration
technology
readiness
level
emerging
concept
integration.
Applied Thermal Engineering,
Год журнала:
2021,
Номер
196, С. 117332 - 117332
Опубликована: Июль 14, 2021
The
dominant
technology
among
latent
heat
thermal
energy
storage
methods
relies
on
solid–liquid
phase
change.
Since
the
primary
disadvantage
of
change
materials
is
low
conductivity,
transfer
enhancement
techniques
are
required
for
these
types
systems.
In
this
paper,
we
propose
a
new
double-tube
units.
melting
time
and
exergy
efficiency
compared
eight
different
design
solutions.
3D
simulations
material
process
were
performed
using
enthalpy-porosity
model,
Boussinesq
approximation,
select
temperature-dependent
properties.
This
study
shows
that
proposed
unit
(M06)
significantly
reduces
PCM
with
vertical
(76%),
horizontal
(66%),
helical-coiled
(53%)
spiral
fins
(M05)
has
highest
(0.77)
at
end
time.
M05,
M06
M08
units
have
times
t=1200
s
t=3307
s,
which
essential
climates
constraints
storage.
