This
study
analyzes
the
technical
and
economic
feasibility
of
hybrid
photovoltaic/thermal
(PVT)
solar
energy
systems,
comparing
them
with
independent
flat
plate
thermal
collectors
(FP)
photovoltaic
(PV)
modules.
Using
TRNSYS
software,
different
configurations
were
simulated
under
climatic
conditions
Mexicali,
Baja
California,
Mexico.
The
results
indicate
that,
although
FP
PV
systems
exhibit
better
performance
in
terms
production
fraction,
PVT
offer
higher
specific
global
(electrical
+
thermal).
However,
is
limited
due
to
high
investment
maintenance
costs,
coupled
low
cost
electrical
region.
Independent
also
face
similar
challenges,
return
on
extending
beyond
20-year
lifespan
project.
Additionally,
demand
for
domestic
hot
water
studied
region
negatively
impacts
efficient
utilization
these
systems.
analysis
suggests
that
contexts
where
available
installation
space
limited,
can
be
an
solution.
scenarios
sufficient
generation
separate
equipment
remains
more
viable.
Moreover,
DHW
affect
efficiency
discrepancy
between
hourly
necessitates
implementation
TEST,
which
significantly
increases
costs
viability
Environmental Chemistry Letters,
Год журнала:
2023,
Номер
22(2), С. 751 - 784
Опубликована: Дек. 15, 2023
Abstract
The
building
sector
is
significantly
contributing
to
climate
change,
pollution,
and
energy
crises,
thus
requiring
a
rapid
shift
more
sustainable
construction
practices.
Here,
we
review
the
emerging
practices
of
integrating
renewable
energies
in
sector,
with
focus
on
types,
policies,
innovations,
perspectives.
sources
include
solar,
wind,
geothermal,
biomass
fuels.
Case
studies
Seattle,
USA,
Manama,
Bahrain,
are
presented.
Perspectives
comprise
self-sufficiency,
microgrids,
carbon
neutrality,
intelligent
buildings,
cost
reduction,
storage,
policy
support,
market
recognition.
Incorporating
wind
into
buildings
can
fulfill
about
15%
building's
requirements,
while
solar
integration
elevate
contribution
83%.
Financial
incentives,
such
as
30%
subsidy
for
adoption
technologies,
augment
appeal
these
innovations.
Journal of Engineering Research,
Год журнала:
2023,
Номер
unknown
Опубликована: Сен. 1, 2023
The
daily
energy
demand
in
public
buildings
has
been
on
the
rise,
partly
due
to
intensive
use
of
building
energy-comfort
technologies.
Hot
water
production,
space
heating
and
air-conditioning
are
major
consumers
buildings;
if
their
can
be
addressed
holistically
through
integration
solar
collectors
with
buildings,
it
will
bring
about
a
reduction
costs.
Fossil
fuels,
such
as
coal,
oil
gas,
most
significant
contributor
global
climate
change,
accounting
for
over
75%
greenhouse
gas
emissions
nearly
90%
all
carbon
dioxide
emissions.
Environmental
experts
clear,
that
avoid
worst
impacts
need
reduced
by
almost
half
2030
reach
net-zero
2050.
To
meet
minimise
environmental
hazards,
world
needs
reduce
its
over-reliance
fossil
fuels
consumption
invest
alternative
sources
clean,
accessible,
affordable,
sustainable,
reliable.
Our
review
aims
provide
comprehensive
analysis
various
uses
thermal
source
green
supply.
benefits
potential
developed
nano-coated
absorber
surface
were
studied,
possible
effect
minimising
corrosion
heat
pipes,
surfaces
storage
tanks
was
considered.
merits
using
collectors,
well
knowledge
gap,
limitations,
trends
future
research
prospects
discussed
elaborately.
Critical
attention
paid
recent
past
developments
this
regard,
technical
outlook
studies
is
highlighted,
link
between
them
addressing
world's
over-dependence
studied.
Energy Conversion and Management X,
Год журнала:
2024,
Номер
23, С. 100671 - 100671
Опубликована: Июль 1, 2024
Photovoltaic
(PV)
systems
are
popular
for
their
reliability
and
zero
fuel
costs.
However,
only
around
20
%
of
solar
energy
is
converted
into
electricity,
while
the
remainder
dissipated
as
waste
heat.
Excessive
heat
affects
lifespan
PV
systems,
leading
to
abnormal
operating
temperatures.
In
this
notion,
Photovoltaic-thermal
(PV/T)
introduced
extract
through
various
cooling
techniques
harness
electrical
thermal
energies,
demonstrating
capabilities
experimental
modeling
techniques.
Researchers
have
sought
develop
optimized
based
on
empirical,
semi-empirical,
AI-based
efficient
execution
PV/T
systems.
This
study
reviews
current
optimization
developments
in
focusing
multiple
numerical
designs.
Various
methods,
including
air,
water,
phase
change
materials
(PCM)
with
nanofluids,
examined
promising
contributions
efficiency
enhancement.
Additionally,
methods
been
investigated
by
incorporating
automated
processes
employing
self-automation
These
aim
reduce
overall
cost
establish
a
self-sustaining
performance.
Finally,
challenges
recommendations
future
research
enhancement
highlighted.
Energy and Built Environment,
Год журнала:
2024,
Номер
unknown
Опубликована: Фев. 1, 2024
Due
to
the
high
consumption
of
fossil
fuels
and
environmental
challenges
world
is
facing,
transition
towards
renewable
energies
has
become
increasingly
evident.
Thus,
enhancing
performance
different
energy
systems
became
a
fundamental
research
focus.
Improving
annual
solar
photovoltaic
efficiencies
critical
need
maintain
system
durability.
The
major
challenge
facing
technology
be
controlled
reduced
overheating
cells,
where
this
factor
not
only
affects
panels
efficiency
but
it
also
causes
heat-induced
structural
damages,
long-term
exposure
which
may
accelerate
material
degradation,
reduce
panel
lifespan,
potentially
develop
hot
spots.
Among
solutions
use
phase
change
materials.
This
demonstrate
detailed
recent
literature
review
alongside
with
appropriate
classifications
analysis
related
four
distinct
PCM-based
cooling
systems:
pure
PCM,
composite
finned
hybrid
PCM
systems.
These
affect
efficiency,
electrical
power
generation,
temperature.
Findings
revealed
that
hydrated
salt
HS36
paraffin
wax
RT42
in
can
highly
enhance
as
well
enhancements
achieved
through
incorporating
multiwall
carbon,
graphene
nanoplatelets,
magnesium
oxide.
Moreover,
integrated
zinc
nanoparticles
aluminum
fins,
demonstrated
promising
improvements.
On
other
hand,
systems,
such
PVT-RT35HC
nanoparticle
nanofluids,
shows
significant
gains
enhancements,
knowing
majority
studies
performed
during
last
three
years
were
introducing
article
potential
advancing
technologies
covers
comprehensive
goes
about
employing
phase-change
materials
for
cells
ways
classified
into
main
categories
are
Energy and Built Environment,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 1, 2024
The
electrical
efficiency
of
the
photovoltaic
(PV)
panel
is
affected
significantly
with
increased
cell
temperature.
Among
various
approaches,
use
Phase
Change
Materials
(PCMs)
nanoparticles
currently
one
most
effective
for
reducing
and
managing
temperature
PV
panels.
In
this
study,
paraffin
wax
as
PCM
different
loading
levels
(0.5%,
1%,
2%)
hybrid
Al2O3
ZnO
were
successfully
synthesized
their
effects
on
performance
Photovoltaic-Thermal
(PVT)
system
investigated
experimentally.
Additionally,
a
prediction
model
was
developed
to
analyze
interaction
between
operating
factors
(independent
variable)
response
(dependent
PVT/PCM
PVT
Hybrid
nano-PCM
(PVT/HNPCM)
systems
based
surface
methodology
(RSM).
Experimental
results
showed
that
compared
only
PCM,
thermal
conductivity
HNPCM
by
24.68%,
28.57%,
41.56%
inclusion
0.5%,
2%
nanomaterial
respectively.
PVT/HNPCM,
enhanced
31.46%
28.70%
respectively
conventional
in
study.
With
cooling-water
mass
flow
rate
0.0021
kg/s,
highest
47%
achieved
system,
whereas
51.28%
PVT/HNPCM
system.
analysis
variance
test
yielded
P
value
<0.0001
which
less
than
0.05
overall
indicating
suggested
model's
appropriateness
statistical
significance.
These
optimal
conditions
are
observed
when
solar
intensity
ranges
from
774
W/m2
809
0.002
kg/s
both
systems.
However,
these
advance
sustainable
urban
development
climate
goals
combining
panels'
generation
energy
harvesting,
boosting
built
environment.
Buildings,
Год журнала:
2024,
Номер
14(2), С. 477 - 477
Опубликована: Фев. 8, 2024
In
this
research,
the
optimization
of
energy
consumption
zero-energy
buildings
using
PCMs
in
two
study
cities
Vancouver
and
Dubai
its
supply
with
a
multi-generation
geothermal
system
is
discussed.
used
walls
roofs
designed
are
types,
namely
PCM
(solid)
(liquid).
By
optimizing
residential
complex
cities,
it
finally
possible
to
choose
best
mode
optimal
conditions
reduce
complex,
costs
environmental
pollution.
The
results
showed
that
amount
electricity
consumption,
heating,
cooling
during
year
city
8493.55,
7899.1,
1083.97
kWh,
respectively,
Dubai,
values
9572.1,
8.99,
18,845.44
kW,
respectively.
Also,
by
complexes
CO2
emissions
2129.7
2773.2
kg/year,
11.26%
carbon
dioxide
emission
23.20%
more.
end,
proposed
meet
six-unit
120
m2
bedrooms
Vancouver,
Canada.
setting
up
237,364.6
kWh
electricity,
425,959.4
304,732.8
can
be
produced
one
year.
According
investigation,
easily
provide
required
buildings.