Frontiers in Earth Science,
Год журнала:
2023,
Номер
11
Опубликована: Март 21, 2023
This
paper
takes
a
groundwater
source
heat
pump
in
the
region
as
research
object
and
based
on
field
research,
experimental
tests
combined
with
comparative
analysis,
data
its
operation
is
monitored
analyzed
terms
of
operation,
energy
saving,
environment.
The
results
show
that
cooling
temperatures
test
rooms
were
all
below
26°C,
average
coefficient
performance
units
was
4.61–4.93
system
3.08–3.27.
In
addition,
compared
to
conventional
water-cooled
chillers,
466
tons
standard
coal
could
be
saved
one
season,
resulting
reduction
1,150.8
carbon
dioxide
emissions,
9.3
sulfur
emissions
4.7
dust
savings
operating
costs
are
793,000
RMB.
shows
has
good
efficiency
economy.
obtained
this
provide
reference
for
improving
optimizing
system.
It
great
significance
application
systems
areas
complex
geological
environments.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Фев. 21, 2025
Shallow
geothermal
energy
(SGE)
is
a
green,
clean,
and
renewable
source
that
widely
used
for
heating
cooling.
However,
hydrogeology
conditions,
thermophysical
properties,
geological
environment
other
factors
influence
the
implementation
of
SGE
projects.
Making
suitability
evaluation
before
implementing
projects
necessary.
The
two
most
common
methods
are
knowledge-driven
data-driven
methods.
method
relies
on
expert
experience.
criteria
lacks
subjective
analysis.
To
address
this
shortcoming,
study
developed
comprehensive
multicriteria
decision
analysis
framework
(CMCDAF)
evaluation.
comprehensively
uses
fuzzy
analytic
hierarchy
process
(FAHP),
Shannon
entropy,
importance
through
intercrieria
correlation
(CRITIC)
genetic
algorithm
to
calulate
weights.
Then
technique
order
preference
by
similarity
ideal
solution
(TOPSIS)
grey
relation
analysis(GRA)
rank
each
node
select
suitable
area.
verify
CMCDAF,
evaluate
ground-coupled
heat
pump
(GCHP)
system
in
Yinchuan
Results
showed
stable
effective.
It
has
advantages
avoiding
one-sided
weights,
facilitating
selection
areas.
also
potential
be
applied
decision-making
processes.
Advances in geosciences,
Год журнала:
2023,
Номер
62, С. 57 - 66
Опубликована: Дек. 19, 2023
Abstract.
The
optimization
of
open-loop
shallow
geothermal
systems,
which
includes
both
design
and
operational
aspects,
is
an
important
research
area
aimed
at
improving
their
efficiency
sustainability
the
effective
management
groundwater
as
a
resource.
This
paper
investigates
various
approaches
to
address
problems
arising
from
these
implementation
questions
about
GWHP
systems.
identified
are
thoroughly
analyzed
based
on
criteria
such
computational
cost
applicability.
Moreover,
novel
classification
scheme
introduced
that
categorizes
according
types
simulation
model
algorithm
used.
Simulation
models
divided
into
two
types:
numerical
simplified
(analytical
or
data-driven)
models,
while
algorithms
gradient-based
derivative-free
algorithms.
Finally,
comprehensive
review
existing
in
literature
provided,
highlighting
strengths
limitations
offering
recommendations
for
use
development
new,
improved
ones
this
field.
Energy,
Год журнала:
2024,
Номер
304, С. 132058 - 132058
Опубликована: Июнь 13, 2024
This
paper
proposes
an
approach
to
optimize
the
technical
potential
of
thermal
groundwater
use
by
determining
optimal
sizing
and
placement
extraction–injection
well
doublets.
The
quantifies
maximum
technically
achievable
volume
extracted
in
a
given
area
and,
hence,
amount
heat
exchanged
with
aquifer,
considering
relevant
regulatory
hydraulic
constraints.
constraints
ensure
acceptable
drawdown
rise
extraction
injection
wells
for
sustainable
use,
respectively,
prevention
internal
breakthroughs,
adequate
spacing
between
neighboring
Analytical
expressions
representing
these
are
integrated
into
mixed-integer
linear
optimization
framework
allowing
efficient
application
relatively
large
areas.
applicability
is
demonstrated
real
case
study
Munich,
where
geothermal
each
city
block
optimized
independently.
Six
scenarios,
differing
terms
required
minimum
installed
doublet
capacity
spacings
doublets,
underline
adaptability
approach.
provides
comprehensive
assessment
can
be
readily
applied
other
geographic
locations.
makes
it
valuable
tool
management
spatial
energy
planning,
such
as
planning
fourth
fifth
generation
district
heating
systems.
Energies,
Год журнала:
2023,
Номер
16(7), С. 2981 - 2981
Опубликована: Март 24, 2023
This
article
deals
with
the
degrees
of
freedom
and
possible
optimums,
specifically
energy
optimums
heat
pump
heating
system.
The
authors
developed
an
multi
objective
optimization
procedure
that
allows
for
determination
optimal
motor
power
circulation
well
pumps
in
order
to
achieve
maximum
COP.
Upon
selecting
type
size
water-to-water
pump,
based
on
demand
buildings,
proper
must
be
determined.
There
are
several
procedures
used
determining
pump’s
power.
However,
none
those
methods
ensures
optimum
power,
i.e.,
coefficient
performance,
COP
In
this
study,
a
analytical-numerical
dimensioning
was
mass
flow
rate
warm
water.
Based
values,
can
calculated.
Due
wide
scope
topic,
application
is
presented
case
but
only
pump.
validity
confirmed
by
measurements.
results
obtained
showed
through
system
increased
5.34%.
Utilizing
groundwater
offers
a
promising
solution
to
alleviate
water
stress
in
Ethiopia,
providing
dependable
and
sustainable
source,
particularly
regions
with
limited
or
unreliable
surface
availability.
However,
effective
decision-making
regarding
well
drilling
placement
is
essential
maximize
resource
potential,
enhancing
agricultural
productivity,
reducing
hunger,
bolstering
food
security
Ethiopia.
This
study
concentrates
on
the
development
of
two-stage
stochastic
mixed
integer
programming
(SMIP)
models
optimize
for
irrigation,
considering
uncertain
demand
scenarios.
Additionally,
deterministic
model
formulated
comparison
SMIP.
Experiments
are
conducted
explore
various
scenario
distributions,
revealing
that
optimized
total
cost
SMIP
generally
exceeds
setting,
aligning
SMIP's
focus
long-term
benefits.
Moreover,
slight
differences
observed
layouts
under
different
assumption
The
also
examines
impact
selected
parameters,
such
as
fixed
construction
costs,
per-meter
out-of-sample
performance
shows
more
flexible
resilient,
11%
4%
lower
costs
than
cases
1
3,
respectively.
flexibility
provides
robust
strategy
allocation
management.
Sustainability,
Год журнала:
2024,
Номер
16(24), С. 10962 - 10962
Опубликована: Дек. 13, 2024
Shallow
geothermal
energy
(SGE)
is
a
promising
green
and
sustainable
source,
gaining
prominence
in
light
of
the
dual-carbon
target.
This
study
investigated
SGE
resources
Yinchuan
area.
Suitability
zones
potential
were
determined
based
on
comprehensive
analysis
about
thermophysical
parameters,
hydrogeological
conditions,
geological
environment.
Our
findings
revealed
that
effective
thermal
conductivity
area
surpasses
those
other
cities,
indicating
significant
for
SGE.
The
thermostat
layer
depth
ranges
from
40
to
60
m,
with
gradient
between
0.81
6.19
°C/100
m.
Regions
poor
adaptability
borehole
heat
exchanger
(BHE)
are
mainly
distributed
western
southern
parts
area,
whereas
moderately
highly
adaptable
areas
primarily
located
central
eastern
areas,
respectively.
total
resource
BHE
amounts
1.07
×
108
GJ/a,
generating
economic
benefits
109
CNY/a
saving
1.09
106
t/a
standard
coal
annually.
initiative
leads
reductions
CO2,
SO2,
NOx
emissions
by
2.61
t/a,
1.86
104
6.57
103
Additionally,
it
results
savings
0.309
environmental
treatment
costs.
methods
models
used
this
have
similar
surveys
arid
cold
regions.
also
contribute
essential
insights
policy
formulation
development
strategies
related
shallow
Hydrogeology Journal,
Год журнала:
2023,
Номер
32(3), С. 891 - 912
Опубликована: Дек. 27, 2023
Abstract
Intense
use
of
groundwater
in
urban
areas
requires
appropriate
monitoring,
which
turn
necessitates
proper
data
management
with
employment
increasingly
sophisticated
statistical
methods
and
mapping
tools.
An
example
such
an
area
intensive
is
the
study
GeoPot
Project,
namely
Munich
(Germany)
its
surroundings.
The
aim
presented
was
to
provide
a
description
hydrogeochemical
characteristics
aquifers
occurring
Quaternary
Upper
Freshwater
Molasse
(German:
Obere
Süßwassermolasse
–
OSM)
sediments
further
improve
understanding
interactions
between
aquifers.
focus
put
on
identification
hydrochemical
facies,
chemical
signatures
different
water
types,
processes,
spatial
relationships
In
order
deal
generated
for
this
study,
as
well
coming
from
existing
external
databanks
(e.g.
BIS-BY),
methodology
quality
assurance
developed.
analytical
focused
multivariate
statistics.
To
enhance
interpretation
obtained
clusters,
recently
developed
three-dimensional
geological
model
used
better
presentation.
It
found
that
area,
deeper
aquifer
systems
represent
most
distinct
signature
Na–HCO
3
type.
remaining
transition
(alkaline)
shallow
(alkaline-earth)
can
be
observed.
results
utilized
improved,
sustainable
management.
