Energies,
Journal Year:
2024,
Volume and Issue:
17(12), P. 2820 - 2820
Published: June 8, 2024
Borehole
engineering
encompasses
the
part
of
mining
that
involves
process
drilling
boreholes
and
their
utilization
(e.g.,
for
research,
exploration,
exploitation,
injection
purposes).
According
to
legal
regulations,
pits
must
be
closed
after
use,
this
applies
in
form
as
well.
The
Laboratory
Geoenergetics
at
AGH
University
Krakow
is
involved
adapting
old,
exploited
already
energetic
purposes.
This
includes
geothermal
applications,
well
energy
storage
rock
formations
boreholes.
a
relatively
new
concept
combines
with
(including
boreholes).
One
type
analysed
borehole
freezing
borehole.
They
are
used,
example,
shafts
vicinity
aquifers
drilled
using
rotary
method
reverse
circulation
mud,
or
peat
bogs.
For
heat
exchangers
based
on
long-term
mathematical
modelling,
several
heating
scenarios
were
considered
thermal
loads.
maximum
average
power
obtained
one
year
usage
four
variable
temperatures
was
11
kW.
With
10
reached
over
27
heat-carrying
temperature
assumed
22
°C
during
early
summer
(June
July)
2
rest
year.
When
considering
stable
exploitation
10-year
period
same
temperatures,
12
kW
obtained,
28
when
amount
8.8
thousand
GJ.
Once
they
have
fulfilled
function,
these
lose
technological
significance.
In
paper,
outlined,
results
analysis
described
numerical
program
BoHEx.
Energy Storage,
Journal Year:
2025,
Volume and Issue:
7(2)
Published: Feb. 19, 2025
ABSTRACT
This
paper
presents
an
optimization
study
of
the
thermal
performance
a
double
U‐tube
borehole
heat
exchanger
(BHE)
with
two
independent
circuits
that
can
be
used
in
energy
storage.
The
applies
Taguchi
method
and
utility
concept
to
obtain
optimum
parameters
for
objective
functions:
maximum
transfer
rate
effectiveness
BHE.
A
validated
numerical
model
fully
implicit
is
applied
compute
transient
results
revealed
optimal
factors
(denoted
letters
numbers
showing
their
levels)
achieving
are
1
B
3
C
2
D
E
F
G
H
,
respectively.
resulted
120
W/m
69.3%.
Using
method,
single
set
by
levels
as
)
obtained
maximize
These
yielded
87.3
54.6%.
Finally,
analysis
variance
(ANOVA)
showed
ground
conductivity,
inlet
temperature
working
fluid,
depth
most
influential
affecting
provides
crucial
information
improvement,
enhanced
savings,
reduced
environmental
impact,
hybrid
source
pump
system
integrated
Buildings,
Journal Year:
2025,
Volume and Issue:
15(2), P. 243 - 243
Published: Jan. 15, 2025
The
efficient
utilization
of
geothermal
energy
depends
heavily
on
high-performance
ground
heat
exchangers.
Coaxial
pipe
is
a
high-efficiency
exchanger
composed
two
nested
tubes
different
diameters.
In
this
paper,
the
structure
and
thermal
exchange
characteristics
coaxial
exchangers
are
introduced,
which
superior
to
single-U
double-U
in
respect
installation,
transporting,
deep
application.
Thermal
test
research
investigated.
Relevant
studies
recent
years
factors
affecting
performance
exchangers,
including
configurations,
circulating
fluids,
subsurface
conditions,
flow
patterns,
operational
modes,
reviewed.
addition,
impact
ground,
as
well
applications
for
summarized.
Recommendations
made
potential
future
It
believed
that
results
these
will
help
raise
awareness
continue
promote
their
