Global advancements of solar thermoelectric generators application, limitations, and prospects: A comprehensive review
Applied Thermal Engineering,
Год журнала:
2024,
Номер
257, С. 124231 - 124231
Опубликована: Авг. 24, 2024
Язык: Английский
A method to improve the energy capture performance and fluid regulation characteristic of capture-energy ball valve based on the biomimetic principle
Energy,
Год журнала:
2025,
Номер
unknown, С. 135617 - 135617
Опубликована: Март 1, 2025
Язык: Английский
Applications of simulation modeling in mining project risk management: criteria, algorithm, evaluation
Journal of Infrastructure Policy and Development,
Год журнала:
2024,
Номер
8(8), С. 5375 - 5375
Опубликована: Авг. 6, 2024
Project
risk
management
in
the
mining
industry
is
necessary
to
identify,
analyze
and
reduce
uncertainty.
The
engineering
features
of
enterprises,
by
their
nature,
require
improved
tools.
This
article
proves
relevance
creating
a
simulation
model
production
process
uncertainty
when
making
investment
decisions.
purpose
study
develop
an
algorithm
for
deciding
on
economic
feasibility
experiment.
At
same
time,
patterns
cases
which
experiment
was
carried
out
were
studied.
Criteria
assessment
introduction
based
qualitative
parameters
became
central
idea
algorithm.
formulated
verified
potassium
salt
deposit
with
subsequent
optimization
parameters.
According
results
experiment,
damage
from
occurrence
situations
estimated
as
decrease
conveyor
productivity
32.6%.
proposed
methods
made
it
possible
minimize
this
stops
network
assess
lack
income
due
occurrences.
Язык: Английский
Potential Application of Saponite Clay for Production of Drilling Fluids
International journal of engineering. Transactions B: Applications,
Год журнала:
2024,
Номер
37(11), С. 2142 - 2149
Опубликована: Янв. 1, 2024
Saponite
is
classified
as
a
trioctahedral
mineral
of
the
smectite
group.Natural
saponite
Lomonosov
deposit
(Arkhangelsk
region,
Russia)
represented
Na-
or
Ca-
forms
according
to
XRD
analysis.
The
interlayer
space
structure
contains
water
molecules.
clay
sampled
at
by
pulp.
powder
for
research
was
obtained
technology
concentrating
fine
material.
crystallochemical
formula
calculated
based
on
data
from
XRD,
XRF
and
atomic
emission
analyses.
purpose
study
effect
mixed
sodium
carbonate-sulfate
electrolyte
(Na2SO4
-
80%;
Na2CO3-20%),
polyacrylamide
(PAA)
low
viscosity
polyanionic
cellulose
(PAC
L)
structure,
filtration
rheological
properties
suspension.
optimum
solids
content
in
suspension
determined
be
range
85-100
g/l.
Going
out
leads
deterioration
presented
significant
increase
loss
increased
thickness
cake.
Filtration
85
g/l
22
cm3/30
min.
Addition
improved
properties,
but
34-36
admixture
rather
quickly
flocculation
sedimentation
particles;
16-21
presence
creates
gel
increasing
mud
system
significantly
reducing
7-9
Язык: Английский
Method for Calculating Heat Transfer in a Heat Accumulator Using a Phase Change Material with Intensification Due to Longitudinal Fins
В. И. Лебедев,
Andrey Deev,
Konstantin Deev
и другие.
Energies,
Год журнала:
2024,
Номер
17(21), С. 5281 - 5281
Опубликована: Окт. 24, 2024
One
of
the
challenges
in
energy
supply
for
isolated
power
systems
is
maintaining
a
steady
balance
between
generated
and
consumed
energy.
The
application
storage
flexible
sources
most
preferable
approach
these
systems.
Small-
medium-sized
nuclear
plants
are
promising,
carbon-free
options
to
However,
have
low
maneuverability.
To
solve
this
problem,
article
discusses
use
thermal
accumulator
using
phase
change
material
(solar
salt)
heat
feedwater.
Tubes
with
longitudinal
fins
used
intensify
transfer
system.
This
paper
presents
method
calculating
along
entire
exchange
surface
such
an
accumulator.
A
series
2D
simulations
were
conducted
study
solidification
process
solar
salt
around
tube
at
various
temperatures
on
inner
wall
surface.
regression
dependences
temperature
thickness
solid
PCM
layer
determined.
Using
presented
obtained
dependencies,
we
determined
time
graphs
fluid
outlet
during
discharge.
Based
results
presented,
it
was
found
that
72.7
tons
(dimensions:
6
×
3.71
2.15
m)
can
replace
high-pressure
heater
№1
low-power
plant
(50
MW)
3450
s.
Язык: Английский
Modeling energy scheduling in the smart isolated electrical grid based on demand management
Multiscale and Multidisciplinary Modeling Experiments and Design,
Год журнала:
2023,
Номер
7(3), С. 1831 - 1842
Опубликована: Дек. 11, 2023
Язык: Английский
Investigation of the Composite Motor Load in the Presence of Higher Harmonics in the Electrical Network
ENERGETIKA Proceedings of CIS higher education institutions and power engineering associations,
Год журнала:
2024,
Номер
67(4), С. 285 - 299
Опубликована: Авг. 12, 2024
The
article
discusses
the
methods
of
substitution
a
compound
motor
load
as
consumer
higher
harmonics.
Two
schemes
were
used.
calculation
complex
resistance
against
them
was
compared
with
results
simulation
modeling.
carried
out
in
MATLAB
Simulink
environment,
use
Specialized
Power
Systems
library,
which
model
motors
and
source
harmonic
distortion
developed.
Five
asynchronous
squirrel-cage
rotor
AIR
brand
powers
varying
from
0.75
to
5.50
kW
selected
for
study.
at
different
loads.
shaft
torque
varied
values
50;
70;
90
100
%
nominal
each
motor.
A
six-pulse
diode
rectifier
used
currents
network,
generating
harmonics
numbers
5,
7,
...,
25,
corresponding
pulse
rate
equal
six.
Oscillograms
voltages
recorded
point
common
connection
rectifier,
subsequently
calculate
resistance.
Based
on
work,
amplitude-frequency
phase-frequency
characteristics
impedance
composite
obtained,
analysis
revealed
incongruence
Conclusions
have
been
drawn
need
continue
research
this
direction,
since
there
are
qualitative
discrepancies
functional
dependence
number
experimental
data
obtained
single
work
can
be
calculating
voltage
factor
modeling
modes
associated
both
existing
enterprises
during
their
design,
will
increase
reliability
efficiency
electrical
networks.
Язык: Английский