БАГАТОГОЛЬЧАСТА ЕЛЕКТРОДНА СИСТЕМА З МЕТАЛЕВИМ ДИСКОМ, ЩО ПРИЗНАЧЕНА ДЛЯ ВИРОБЛЕННЯ ОЗОНУ У СТРИМЕРНОМУ КОРОННОМУ РОЗРЯДІ
The search for methods for taking into account a significant number of factors that affect the development of a positive corona discharge in technological processes determines the relevance of research in this area. The aim of the work is to determine for the streamer corona discharge in air at atmo...
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| Дата: | 2026 |
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| Автори: | , , , |
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| Мова: | Англійська Українська |
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Інститут електродинаміки НАН України, Київ
2026
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| author | Берека, В.О. Божко, І.В. Васецький, Ю.М. Кондратенко, І.П. |
| author_facet | Берека, В.О. Божко, І.В. Васецький, Ю.М. Кондратенко, І.П. |
| author_institution_txt_mv | [
{
"author": "В.О. Берека",
"institution": "Інститут електродинаміки НАН України, пр. Берестейський, 56, Київ, 03057, Україна"
},
{
"author": "І.В. Божко",
"institution": "Інститут електродинаміки НАН України, пр. Берестейський, 56, Київ, 03057, Україна"
},
{
"author": "Ю.М. Васецький",
"institution": "Інститут електродинаміки НАН України, пр. Берестейський, 56, Київ, 03057, Україна"
},
{
"author": "І.П. Кондратенко",
"institution": "Інститут електродинаміки НАН України, пр. Берестейський, 56, Київ, 03057, Україна"
}
] |
| author_sort | Берека, В.О. |
| baseUrl_str | https://techned.org.ua/index.php/techned/oai |
| collection | OJS |
| datestamp_date | 2026-07-13T10:03:03Z |
| description | The search for methods for taking into account a significant number of factors that affect the development of a positive corona discharge in technological processes determines the relevance of research in this area. The aim of the work is to determine for the streamer corona discharge in air at atmospheric pressure the influence of the geometric configuration of a multi-needle electrode system with a metal disk, as well as the air flow rate with its supply along the needles on the distribution of the electric field, the fulfillment of the avalanche-streamer transition condition, the ozone output and the energy consumption required for this. It is shown the existence of threshold values for the interelectrode voltage, needle lengths and distance between the needles, which limit the possibility of the appearance of streamers in the corona discharge. Based on the experimental results, in relation to energy consumption, it can be concluded that there are optimal values for the needle lengths and the distance between them. It was found that an increase in air flow in the electrode system during ozone production leads to a decrease in specific energy consumption and simultaneously to a decrease in ozone concentration. This relationship, depending on the purpose of the streamer corona discharge, must be taken into account in its practical application. References 7, figures 4, tables 2. |
| doi_str_mv | 10.15407/techned2026.04.003 |
| first_indexed | 2026-07-02T01:01:32Z |
| format | Article |
| fulltext |
ISSN 1607-7970. Техн. електродинаміка. 2026. № 4 3
ТЕОРЕТИЧНА ЕЛЕКТРОТЕХНІКА ТА ЕЛЕКТРОФІЗИКА
DOI: https://doi.org/10.15407/techned2026.04.003
MULTI-NEEDLE ELECTRODE SYSTEM WITH A METAL DISC DESIGNED FOR OZONE
PRODUCTION IN THE STREAMER CORONA DISCHARGE
V.O. Bereka*, I.V. Bozhko**, Yu.M. Vasetsky***, I.P Kondratenko****
Institute of Electrodynamics National Academy of Science of Ukraine,
56, Beresteiskyi Ave., Kyiv, 03057, Ukraine.
E-mail: yuriy.vasetsky@gmail.com.
The search for methods for taking into account a significant number of factors that affect the development of a positive
corona discharge in technological processes determines the relevance of research in this area. The aim of the work is to
determine for the streamer corona discharge in air at atmospheric pressure the influence of the geometric configuration
of a multi-needle electrode system with a metal disk, as well as the air flow rate with its supply along the needles on the
distribution of the electric field, the fulfillment of the avalanche-streamer transition condition, the ozone output and the
energy consumption required for this. It is shown the existence of threshold values for the interelectrode voltage, needle
lengths and distance between the needles, which limit the possibility of the appearance of streamers in the corona dis-
charge. Based on the experimental results, in relation to energy consumption, it can be concluded that there are opti-
mal values for the length of needles and the distance between them. It was found that an increase in air flow in the elec-
trode system during ozone production leads to a decrease in specific energy consumption and simultaneously to a de-
crease in ozone concentration. This relationship, depending on the purpose of the streamer corona discharge, must be
taken into account in its practical application. References 7, figures 4, tables 2.
Key words: positive streamer corona, multi-needle electrode system, ozone output, energy consumption, optimization of
the electrode system.
Introduction. At present, the use of corona electric discharge in gas, which occurs in a sharply in-
homogeneous electric field, for example, near the needle, does not lose its importance. The attractiveness of
this type of electric discharge lies in the efficiency of creating electrically charged and chemically active par-
ticles, which is carried out by electrons and photons that arise in the corona discharge. When using a positive
streamer corona discharge, the electric field strength near the head of the streamer, which propagates to the
cathode at high speed, reaches a significant value [1]. In such field, electrophysical processes occur with in-
tensive generation of ozone, active radicals and other particles. In addition, a streamer discharge can appear
in certain operating modes of high-voltage devices [2]. Therefore, its study, along with the study of other
types of corona discharge [3-5], appears to be an urgent problem.
In experiments and practical applications of corona discharge with corona-forming needles, an elec-
trode system with a metal disk parallel to another usually grounded electrode is widespread. The metal disk is a
platform for a multi-needle electrode, and it also limits the length of the needles. The disk significantly affects
the distribution of the electric field, reducing the field strength near the tip and simultaneously increasing its
value in the rest of the interelectrode space. Hence, it is importance to study the influence of the presence of the
metal disk, the length of the needles and their mutual arrangement on the parameters of the streamer corona
discharge and ultimately on the efficiency of the corona discharge in technological application.
The aim of the work is to determine for the streamer corona discharge in air at atmospheric pressure
the influence of the geometric parameters of multi-needle electrode system with the metal disk, as well as the
air flow rate with its supply along the needles on the distribution of the electric field, the fulfillment of the
avalanche-streamer transition condition, the ozone output and the energy consumption required for this.
Bereka V.O., Bozhko I.V., Vasetsky Yu.M., Kondratenko I.P., 2026
ORCID: * https://orcid.org/0000-0003-0888-2864; ** https://orcid.org/0000-0002-7955-246X;
*** https://orcid.org/0000-0002-4738-9872; **** https://orcid.org/0000-0003-1914-1383
© Publisher PH “Akademperiodyka” of the National Academy of Sciences of Ukraine, 2026
This is an Open Access article under the CC BY-NC-ND 4.0 license
https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.en
4 ISSN 1607-7970. Техн. електродинаміка. 2026. № 4
Geometric parameters of the electrode system and mathematical model. The metal disk and the
needles are under the same positive potential U opposite the grounded flat electrode. The geometric pa-
rameters of the main elements are shown in Fig. 1: mm15d is the interelectrode distance, which is con-
stant in this work, h is the length of the needle, a is the distance between the needles, mm05.0cr is the
radius of the cylindrical needle, which has a rounded tip of the same radius (in the calculation part).
The calculations use a simplified mathematical model that considers the growth and drift of electron
avalanches without taking into account the electric field of the charge of ions distributed in space. This ap-
proach is often used in the study of processes with separated avalanches and streamers [1] and allows us to
focus on identifying the influence of the main factors affecting the parameters of the corona discharge.
The increase in the number of electrons eN in the avalanche was calcu-
lated taking into account the effective impact ionization coefficient ef . The de-
pendence of the coefficient ef on the strength of the electric field E was deter-
mined using the approximation containing the parameters A and B , the values of
which are given in [1, 6, 7]
0
exp dN efe , де
pE
B
A
p
ef
exp
. (1)
Here p is the air pressure; is the coordinate along which the avalanche of elec-
trons moves (usually it is a field line); 0 is the position of the initial electron. For
ionization of air molecules, the field strength must exceed the threshold
mV1026 5 .
The avalanche-streamer transition for atmospheric pressure air was deter-
mined by reaching a certain number of electrons in the avalanche [1, 6]
20)ln( eNQ . (2)
Calculation of the growth of electron avalanches and fulfillment of the avalanche-streamer
transition condition. In the case of the electrode system with one needle, at selected values d and cr the
parameters affecting the electric discharge processes are the needle length h and voltage U . In a sharply
inhomogeneous field of a thin needle, the beginning of ionization of molecules, where the field strength be-
gins to exceed the ionization threshold, is possible near the needle. The avalanche of electrons, increasing,
drifts in the direction to the needle and at a certain distance from it the condition of the avalanche-streamer
transition (2) can be met. For different needle lengths h at a voltage kV17U , the corresponding values
iz of the distances of the ionization threshold and the appearance of streamers Qz on the symmetry axis z, as
well as the field strength QE at the points of transformation of the avalanche into the streamer are given in
Table 1
The table shows that as the needle length increases, the
distance at which ionization of molecules is possible increases.
This means that the region near the needle tip also increases, the
appearance of initial electrons in which leads to the growth of
avalanches and their transformation into streamers. The needle
length at which the avalanche-streamer transition condition (2) is met has a threshold character. This is ex-
plained by the fact that when the electric field strength in the ionization zone decreases for shorter needle, the
number of electrons in the avalanche on the maximum path of its growth cannot reach the required values
under condition (2). For example, for the voltage kV17U , the appearance of streamers is impossible at a
needle length of mm3h . For each needle length, there is also a lower voltage limit below which the ava-
lanche-streamer transition condition cannot be met (voltage threshold value). As the needle length increases,
the threshold voltage value decreases. For example, for mm7h the threshold value calculated by the ma-
thematical model is kV9U , and at mm10h such voltage is kV7U .
In the case of multi-needle electrode, another geometric parameter that affects the development of
the electric discharge process is the distance (step) between adjacent needles. For voltage kV17U , the
h, m zi, m zQ , m EQ, V/m
510-3 3.910-4 3.010-5 290105
710-3 4.510-4 4.510-5 260105
1010-3 5.210-4 6.610-5 230105
d z
rc
a
=0
=U
b
Fig. 1
h
ISSN 1607-7970. Техн. електродинаміка. 2026. № 4 5
dependence of the parameter Q on the distance a is shown in Fig. 2. For the needle lengths
mm15,9,7,5h , the corresponding curves are sequentially marked with numbers 1, 2, 3, 4. The figure
shows that to fulfill the condition 20Q , that is, to induce a streamer discharge in the gap, the step between
the needles must exceed the minimum value mm5min a . At the same time, the needle length in the range
mm15...5h has a weak effect on the value mina .
Taking into account the results of the calculations, for
the experimental study of the efficiency of the streamer corona
discharge using a multi-needle electrode, anodes were chosen, in
which the distance between needles exceeded 5 mm.
Experimental studies. In contrast to the calculations,
the needles in the experiments were platinum-rhodium strips
with a cross section of mm0.30.06 . The disk had holes for
individual blowing of the needles (shown in Fig. 1 as unshaded
areas of the disk near the needle surface). The constant voltage
of positive polarity was applied to the electrodes from a stabi-
lized high-voltage power source. Signals for recording currents
and voltages were taken, respectively, from a low-inductance
shunt and an ohmic voltage divider and fed to the input of electronic devices, the characteristics of which
allow recording the features of electric discharge processes. The ozone concentration C was measured opti-
cally by the absorption of ultraviolet (UV) radiation in a gas cuvette, to which radiation came from an exter-
nal source of UV light. The concentration value C was determined based on the Bouguer-Lambert-Beer law
CmGRR exp0 , where RR and0 are the signal values at the output of the photomultiplier in the ab-
sence and presence of ozone in the cuvette, respectively, m is the optical length of the cuvette, G is the
cross section of ozone absorption of radiation at the wavelength . Measurements were carried out at wave-
lengths of 254.7 and 275 nm.
Single-needle electrode. The study of the characteristics of the single-needle corona discharge allows
for comparison with the corresponding characteristics of the multi-needle electrode system, which can have
practical applications. An example of the corresponding characteristics at h = 9 mm, d = 15 mm and air flow
rate V = 5 l/min is shown in Fig. 3. From the current-
voltage characteristic (I-V) of the discharge (curve 1) it
can be seen that the voltage at which corona appears is
7 kV. The time-averaged corona discharge current I in
the experiments reaches the highest value Im = 180 μA
at the applied voltage U = 17 kV. At current value I
close to 40 μA, an inflection is observed on the I-V
characteristic, after which the steepness of the current
increases with increasing voltage U. The current at the
inflection point of the curve corresponds to the appear-
ance of the measured value of the ozone concentration
C (curve 2). With a further increase in the discharge
current, the concentration C continuously increases, and
the specific energy consumption for ozone generation W decreases (curve 3), which at I = Im reach values of
0.35 mg/l and 30 kWh/kg, respectively.
The discharge current recording on the oscilloscope shows that near inflection point on the I-V char-
acteristic a short streamer current pulses (200 ... 300 ns) with amplitudes im ~ 10 mA appear. With an in-
crease in the averaged discharge current to I = 180 μA, the pulse amplitudes im reach values of 70 mA.
Studies have shown that the discharge parameters significantly depend on the gas flow rate. An in-
crease in the gas flow rate at a constant input power leads to a decrease in the ozone concentration and spe-
cific energy consumption. For example, at air flow rates V in the range of 0.2...27 l/min, the values of C and
W vary, respectively, within the limits of 2.5...0.1 mg/l and 70...20 kWh/kg. Increase in the ozone concentra-
tion to maximum values of 2.5 mg/l is observed with a simultaneous decrease in the streamer current ampli-
tude to 20 mA. This indicates a significant influence of negative ozone ions
3O with a high electron affinity
6 ISSN 1607-7970. Техн. електродинаміка. 2026. № 4
energy (2.1 eV [1]), which is associated with a decrease in the concentration of electrons, which primarily
provide electrical conductivity of the plasma of the streamer channels.
The presence of the metal disk in the electrode system contributes to an increase in ozone yield with
a decrease in specific energy consumption. For example, with a needle length of h = 9 mm, the specific en-
ergy consumption is reduced by more than half compared to the absence of such disk. This can be seen from
Table 2, which shows the results obtained under the same conditions in the absence and presence of the met-
al disk, lines 1 and 2. The increase in energy consumption in the absence of the metal disk can be associated
with a large proportion of the electron avalanche current along the lateral surface of the long needles not lim-
ited by the disk.
Multi-needle electrode. Experiments performed with different needle lengths h and distances be-
tween them a allowed us to establish the optimal geometric dimensions in terms of the specific energy con-
sumption for ozone generation W. The corresponding values are given in row 3 of Table 2. A comparison
with a single-needle electrode in row 2 shows that the distance between the needles has a smaller effect than
the needle length (at least at the distances between the needles that are not less than their length).
Table 2
Changing the main geometric dimensions of the elec-
trode system (h and a) to values that go beyond the optimal
ones leads to an increase in specific energy consumption.
This is evident from the data in row 4 of the table, in which at
h = 4 mm and a = 7 mm the value W = 46 kWh/kg is one and
a half times higher than W at the optimal h in row 3.
The characteristics of the multi-needle electrode at the optimal values of the geometric parameters
h = 9 mm and a = 10 mm are presented in Fig. 4.
Curve 1 shows that the ozone concentration decreases
from 2 mg/l at low air flow rates V = 1 l/min to 0.4
mg/l with increase in the flow rate to 12 l/min. The
maximum concentration of C = 3 mg/l was obtained
at minimum flow rate V = 0.2 l/min (not shown in
Fig. 4). The specific energy consumption W for ozone
production, as for a single needle, decreases with in-
crease in the value of V (curve 2). At the air flow rate
V = 11 l/min, they are 20 kWh/kg. A further increase
in V to 25 l/min leads to a decrease in the energy con-
sumption W to 14 kWh/kg. Note that this value is
characteristic of a barrier discharge in undrained, as
in our case, atmospheric air.
Conclusions. Computational studies on the fulfillment of the condition of the avalanche-streamer
transition in the electrode system of the needle, the length of which is limited by the metal disk, against the
plane showed the existence of threshold values of the needle length and the constant interelectrode voltage,
below which the appearance of streamers is impossible. In the multi-needle electrode, for the appearance of
streamers, the distance between the nearest needles must also exceed the certain threshold value.
Experimental studies of ozone generation in the multi-needle electrode system and the energy con-
sumption required for this have shown the existence of optimal energy consumption values for the needle
length and the distance between them. It turned out that the needle length has the main influence, while for
systems with different distances between the needles exceeding a certain value, the specific energy consump-
tion for ozone generation differs little.
Experiments show that in streamer corona discharge, the air flow rate during ozone production has a
different effect on the ozone concentration in the air and the energy consumption required for this. With an
increase in the air flow rate (from 2 to 12 l/min), on the one hand, the ozone concentration, which is desirable
to have larger, decreases significantly (from 2 to 0.4 mg/l), on the other hand, the specific energy consump-
tion decreases (from 60 to 20 kWh/kg). Therefore, there is probably an optimal air flow rate, which may dif-
fer depending on the purpose.
The work was supported by state project "Development of the theory and modeling of non-stationary
electrophysical processes in the conducting and dielectric media of the pulsed electromagnetic systems"
("Barrier-3"), state registration number 0123U100671, KPKVK 6541030.
Number of
needles
h, mm а, mm V, l/min W,
kWh/kg
1 - 7 68
1 9 - 7 30
14 9 10 7 29
36 4 7 7 46
ISSN 1607-7970. Техн. електродинаміка. 2026. № 4 7
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УДК 517.523.9
БАГАТОГОЛЬЧАСТА ЕЛЕКТРОДНА СИСТЕМА З МЕТАЛЕВИМ ДИСКОМ, ЩО
ПРИЗНАЧЕНА ДЛЯ ВИРОБЛЕННЯ ОЗОНУ У СТРИМЕРНОМУ КОРОННОМУ РОЗРЯДІ
В.О. Берека, докт. філософії, І.В. Божко, канд. техн. наук, Ю.М. Васецький, докт. техн. наук,
І.П. Кондратенко, чл.-кор. НАН України
Інститут електродинаміки НАН України,
пр. Берестейський, 56, Київ, 03057, Україна.
E-mail: yuriy.vasetsky@gmail.com.
Пошук методів врахування значної кількості факторів, що впливають на розвиток позитивного коронного
розряду у технологічних процесах, визначає актуальність дослідження у цьому напрямку. Метою роботи є
визначення у стримерному коронному розряді в повітрі атмосферного тиску впливу геометричної конфігурації
багатогольчатої електродної системи з металевим диском, а також розходу повітря з його подачею вздовж
вістря на розподіл електричного поля, виконання умови лавинно-стримерного переходу, вихід озону та необхід-
ні для цього енерговитрати. Показано існування порогових значень міжелектродної напруги, довжини вістря
та відстані між вістрями, які обмежують можливість появи стримерів у коронному розряді. На основі екс-
периментальних результатів стосовно споживання енергії зроблено висновок про можливість існування оп-
тимальних значені довжини голок та відстані між ними. Виявлено, що збільшення витрат повітря в електро-
дній системі при вироблені озону призводить до зменшення питомих витрат енергії та одночасно до зменшен-
ня концентрації озону. Такий зв’язок в залежності від призначення стримерного коронного розряду необхідно
враховувати при його практичному застосуванні. Бібл. 7, рис. 4, табл. 2.
Ключові слова: позитивна стримерна корона, багатогольчаста електродна система, вихід озону, енерговитрати.
оптимізація електродної системи.
Received 13.05.2026
Accepted 16.06.2026
|
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| language | English Ukrainian |
| last_indexed | 2026-07-14T01:01:10Z |
| publishDate | 2026 |
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| spelling | techned_org_ua-article-18502026-07-13T10:03:03Z MULTI-NEEDLE ELECTRODE SYSTEM WITH A METAL DISC DESIGNED FOR OZONE PRODUCTION IN THE STREAMER CORONA DISCHARGE БАГАТОГОЛЬЧАСТА ЕЛЕКТРОДНА СИСТЕМА З МЕТАЛЕВИМ ДИСКОМ, ЩО ПРИЗНАЧЕНА ДЛЯ ВИРОБЛЕННЯ ОЗОНУ У СТРИМЕРНОМУ КОРОННОМУ РОЗРЯДІ Берека, В.О. Божко, І.В. Васецький, Ю.М. Кондратенко, І.П. позитивна стримерна корона багатогольчаста електродна система вихід озону енерговитрати оптимізація електродної системи streamer corona multi-needle electrode system ozone output energy consumption optimization of the electrode system The search for methods for taking into account a significant number of factors that affect the development of a positive corona discharge in technological processes determines the relevance of research in this area. The aim of the work is to determine for the streamer corona discharge in air at atmospheric pressure the influence of the geometric configuration of a multi-needle electrode system with a metal disk, as well as the air flow rate with its supply along the needles on the distribution of the electric field, the fulfillment of the avalanche-streamer transition condition, the ozone output and the energy consumption required for this. It is shown the existence of threshold values for the interelectrode voltage, needle lengths and distance between the needles, which limit the possibility of the appearance of streamers in the corona discharge. Based on the experimental results, in relation to energy consumption, it can be concluded that there are optimal values for the needle lengths and the distance between them. It was found that an increase in air flow in the electrode system during ozone production leads to a decrease in specific energy consumption and simultaneously to a decrease in ozone concentration. This relationship, depending on the purpose of the streamer corona discharge, must be taken into account in its practical application. References 7, figures 4, tables 2. Пошук методів врахування значної кількості факторів, що впливають на розвиток позитивного коронного розряду у технологічних процесах, визначає актуальність дослідження у цьому напрямку. Метою роботи є визначення у стримерному коронному розряді в повітрі атмосферного тиску впливу геометричної конфігурації багатогольчатої електродної системи з металевим диском, а також розходу повітря з його подачею вздовж вістря на розподіл електричного поля, виконання умови лавинно-стримерного переходу, вихід озону та необхідні для цього енерговитрати. Показано існування порогових значень міжелектродної напруги, довжини вістря та відстані між вістрями, які обмежують можливість появи стримерів у коронному розряді. На основі експериментальних результатів стосовно споживання енергії зроблено висновок про можливість існування оптимальних значені довжини голок та відстані між ними. Виявлено, що збільшення витрат повітря в електродній системі під час вироблені озону призводить до зменшення питомих витрат енергії та одночасно до зменшення концентрації озону. Такий зв’язок в залежності від призначення стримерного коронного розряду необхідно враховувати під час його практичного застосуванні. Библ. 7, рис. 4, табл. 2. Інститут електродинаміки НАН України, Київ 2026-07-01 Article Article application/pdf application/pdf https://techned.org.ua/index.php/techned/article/view/1850 10.15407/techned2026.04.003 Tekhnichna Elektrodynamika; No. 4 (2026): TEKHNICHNA ELEKTRODYNAMIKA; 003 ТЕХНІЧНА ЕЛЕКТРОДИНАМІКА; № 4 (2026): ТЕХНІЧНА ЕЛЕКТРОДИНАМІКА; 003 2218-1903 1607-7970 10.15407/techned2026.04 en uk https://techned.org.ua/index.php/techned/article/view/1850/1608 https://techned.org.ua/index.php/techned/article/view/1850/1609 Авторське право (c) 2026 ТЕХНІЧНА ЕЛЕКТРОДИНАМІКА https://creativecommons.org/licenses/by-nc-nd/4.0 |
| spellingShingle | позитивна стримерна корона багатогольчаста електродна система вихід озону енерговитрати оптимізація електродної системи Берека, В.О. Божко, І.В. Васецький, Ю.М. Кондратенко, І.П. БАГАТОГОЛЬЧАСТА ЕЛЕКТРОДНА СИСТЕМА З МЕТАЛЕВИМ ДИСКОМ, ЩО ПРИЗНАЧЕНА ДЛЯ ВИРОБЛЕННЯ ОЗОНУ У СТРИМЕРНОМУ КОРОННОМУ РОЗРЯДІ |
| title | БАГАТОГОЛЬЧАСТА ЕЛЕКТРОДНА СИСТЕМА З МЕТАЛЕВИМ ДИСКОМ, ЩО ПРИЗНАЧЕНА ДЛЯ ВИРОБЛЕННЯ ОЗОНУ У СТРИМЕРНОМУ КОРОННОМУ РОЗРЯДІ |
| title_alt | MULTI-NEEDLE ELECTRODE SYSTEM WITH A METAL DISC DESIGNED FOR OZONE PRODUCTION IN THE STREAMER CORONA DISCHARGE |
| title_full | БАГАТОГОЛЬЧАСТА ЕЛЕКТРОДНА СИСТЕМА З МЕТАЛЕВИМ ДИСКОМ, ЩО ПРИЗНАЧЕНА ДЛЯ ВИРОБЛЕННЯ ОЗОНУ У СТРИМЕРНОМУ КОРОННОМУ РОЗРЯДІ |
| title_fullStr | БАГАТОГОЛЬЧАСТА ЕЛЕКТРОДНА СИСТЕМА З МЕТАЛЕВИМ ДИСКОМ, ЩО ПРИЗНАЧЕНА ДЛЯ ВИРОБЛЕННЯ ОЗОНУ У СТРИМЕРНОМУ КОРОННОМУ РОЗРЯДІ |
| title_full_unstemmed | БАГАТОГОЛЬЧАСТА ЕЛЕКТРОДНА СИСТЕМА З МЕТАЛЕВИМ ДИСКОМ, ЩО ПРИЗНАЧЕНА ДЛЯ ВИРОБЛЕННЯ ОЗОНУ У СТРИМЕРНОМУ КОРОННОМУ РОЗРЯДІ |
| title_short | БАГАТОГОЛЬЧАСТА ЕЛЕКТРОДНА СИСТЕМА З МЕТАЛЕВИМ ДИСКОМ, ЩО ПРИЗНАЧЕНА ДЛЯ ВИРОБЛЕННЯ ОЗОНУ У СТРИМЕРНОМУ КОРОННОМУ РОЗРЯДІ |
| title_sort | багатогольчаста електродна система з металевим диском, що призначена для вироблення озону у стримерному коронному розряді |
| topic | позитивна стримерна корона багатогольчаста електродна система вихід озону енерговитрати оптимізація електродної системи |
| topic_facet | позитивна стримерна корона багатогольчаста електродна система вихід озону енерговитрати оптимізація електродної системи streamer corona multi-needle electrode system ozone output energy consumption optimization of the electrode system |
| url | https://techned.org.ua/index.php/techned/article/view/1850 |
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