International Journal of Thermofluids,
Journal Year:
2023,
Volume and Issue:
20, P. 100359 - 100359
Published: April 25, 2023
Numerous
researchers
have
proposed
phase
change
materials
(PCMs)
as
an
alternative
for
increasing
the
autonomy
of
solar
water
heaters
(SWHs).
Many
studies
considered
SWHs
with
PCMs
in
three
main
configurations:
inside
thermal
collector,
a
coupled
heat
storage
unit,
and
within
tank.
A
wide
range
topics
has
been
explored
assessing
recent
years,
including
but
not
limited
to
enhancement
techniques
improving
transfer,
optimization
strategies,
economic
factors,
weather
exposure
on
performance,
application
design
methodologies.
This
article
reviews
discusses
work
these
trending
topics,
identifies
research
opportunities,
suggests
promising
efforts
toward
more
mature
PCM
technology,
focusing
long-term
scalability,
economic,
technical
feasibility.
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(12), P. 9780 - 9780
Published: June 19, 2023
Solar
energy’s
most
promising
application
is
in
water
heating,
followed
by
other
solar
thermal
applications.
In
this
investigation,
a
novel
method
of
incorporating
phase-change
material
(PCM)
between
the
annulus
space
an
evacuated
tube
and
aluminum
finned
heat
pipe
employed.
During
day
time,
PCM
stores
excess
amount
releases
it
order
to
flowing
during
high-demand/insufficient
radiation.
This
study
aims
evaluate
detailed
transfer
assessment
energetic
exergetic
efficiencies
developed
PCM-integrated
heater
both
clear
cloudy
weather
conditions
at
20
LPH.
The
outcomes
found
that
maximum
useful
amounts
energy
collected
daily
for
days
were
10.65
MJ
8.52
MJ,
respectively,
whereas
temperatures
stored
be
45.2
°C
41.4
on
next
6:00
a.m.
corresponding
days.
outputs
designed
system
76.57%
79.64%,
2.37%
1.38%,
fixed
mass
flow
rate
conditions.
overall
coefficients
(UL)
0.75
0.72
W/m2
K,
respectively.
findings
show
proposed
overcomes
issue
overheated
pipes
can
provide
hot
even
cloudy/low-sunshine
Buildings,
Journal Year:
2023,
Volume and Issue:
13(5), P. 1212 - 1212
Published: May 4, 2023
In
recent
years,
building
energy
consumption
has
increased
every
day
due
to
population
growth
and
an
human
desire
for
a
healthy
pleasant
lifestyle,
this
is
responsible
crisis
of
shortages
worldwide.
Therefore,
use
solar
water
heating
(SWH)
systems
in
buildings
hot
demand
the
prime
need
hour
maintain
sustainability.
The
novelty
work
was
developing
phase
change
material
(stearic
acid)-filled
U-tube
based
evacuated
tube
collector
(collector
A).
addition,
another
B,
left
without
storage
material,
considered
reference
unit
comparing
exergy
outputs.
study’s
main
aim
examine
energy,
exergy,
enviro-
exergoeconomic
analysis
newly
developed
systems.
findings
study
revealed
that
maximum
daily
outputs
A
were
found
be
85.86%
(simultaneous
mode)
84.27%
(midday
charging
at
high
mass
flow
rate
(0.5
LPM),
19.41%
21.35%,
respectively,
low
rate.
thermal
output
higher
than
B.
per
liter
cost
produced
from
with
PCMs
INR
0.1261
0.1276,
under
both
modes,
which
less
compared
electric
geyser
(0.325
INR).
levelized
cost,
net
present
worth,
payback
time
obtained
4.61
INR/kWh,
49710,
4.49
years
(simultaneous),
4.67
48130,
4.64
(mid-day
charging),
respectively.
Furthermore,
amount
CO2
mitigation
perspective
24.30
23.76
tCO2/lifetime
5.31,
5.58
tCO2/lifetime,
Journal of Energy Storage,
Journal Year:
2023,
Volume and Issue:
71, P. 108118 - 108118
Published: June 27, 2023
Phase
change
materials
(PCMs)
offer
higher
levels
energy
storage
density
than
conventional
hot
water
tanks
commonly
used
with
solar
systems.
The
present
study
aims
at
investigating
the
integration
of
a
selected
PCM
within
structure
an
evacuated
tube
system
to
create
some
compact
thermal
capacity.
Then
heater
is
compared
this
novel
PCM-based
self-storing
design.
results
show
that
proposed
design
can
maintain
collector
output
temperature
around
63
°C
after
15
h
not
receiving
any
sunlight.
That
whilst
normal
drops
down
ambient
in
same
period.
obtained
efficiency
57
%
and
75
%,
overall
49
72
for
collectors,
respectively.
For
small-scale
study,
helps
reduce
size
tank
required
supply
demand
by
55
%.
also
shows
even
yield
better
performance
larger
scales
practical
applications.
