Studying and substantiation of the method for normalization of air­ionic regime at industrial premises at the ultrasonic ionization of air

Sukach, Serhii; Kozlovs’ka, Tatyana; Serhiienko, Ihor; Khodakovskyy, Oleksiy; Liashok, Yaroslav; Kipko, Oleksandr

doi:10.15587/1729-4061.2018.141060

Cited by 8 publications

(4 citation statements)

References 7 publications

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“…The most appropriate sources of generation of a large number of air ions are ultrasonic ionizers. Paper [4] investigates the generation and propagation of air ions from the ultrasonic emitter due to the balloelectric effect. There is a lack of adverse phenomena -ozone and nitrogen compounds generation.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Identifying regularities in the propagation of air ions in rooms with artificial air ionization

Levchenko,

Burdeina,

Glyva

et al. 2023

EEJET

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The object of the study is the dynamics of air ion spread in rooms from the source of artificial air ionization under different starting conditions. There is currently the problem of distribution of air ions in the room with regulatory concentrations in all critical zones. An effective method of ensuring proper air ion concentrations is to model their propagation from ionization sources. Existing approaches to calculating the dynamics of air ions of both polarities have been improved in this study. Unlike known solutions, the impact on their concentration of electrostatic field and the interaction of air ions with suspended particles was taken into account. A model of air ion propagation in rooms with artificial air ionization and the principles of its numerical modeling was built. The use of Laplace Equation in the aerodynamic model instead of the Navier-Stokes equation for the potential of the flow rate has made it possible to design an "Ion 3D" tool, which reduces the time of implementation of one scenario from several hours to 7 seconds. Modeling of the propagation of air ions of both polarities in the room under different initial conditions was carried out. Two-dimensional and three-dimensional models with their visualization was implemented. The peculiarity of the resulting models is that they make it possible to determine the concentrations of air ions in any section of the room by three coordinates. Given this, the rapid selection of the variants of the source data makes it possible to achieve the normative values of concentrations of air ions in the area of breathing – exceeding 500 cm-3 of each polarity. Simulation makes it possible to design a room in which, under the condition of artificial ionization of air, the concentrations of air ions close to the optimal values of 3000–5000 cm-3 are provided

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Identifying regularities in the propagation of air ions in rooms with artificial air ionization

Levchenko,

Burdeina,

Glyva

et al. 2023

EEJET

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“…Результати досліджень [5][6][7][8] визначають особливості пилоутворення під час оброблення анізотропного порожнистого середовища, водночас, викликаючи значний інтерес щодо дослідження складу повітря робочого приміщення.…”

Section: аналіз останніх досліджень і публікаційunclassified

Research of the Aerodynamic Process of Carbon Dust Removal From the Working Zone

Chencheva

Lashko

Rieznik

et al. 2023

MEC

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The purpose of this work is research of the aerodynamic process of carbon dust removal from the working zone in order to create safe and harmless working conditions at the production site. As a result of the research, an aerodynamic calculation of a long air duct of uniform suction with tangential air intake was performed. The degree of twisting of the air flow inside the air duct, as well as the uniformity of air suction along the length of the long suction, were determined. A number of factors affecting the dust removal process have been established, such as suction torch long suction; coefficient of local suction resistance; forces of inertia and viscosity on the resistance of local suction. The dependence of the ratio of the width of the entrance hole to the diameter of the air duct on the local suction resistance, the dependence of the ratio of the areas of the entrance gap and the cross section of the transitional air duct on the local suction resistance, as well as the effect of the length of the entrance slot on the coefficient of local suction resistance were determined. The efficiency of suction of dust particles with an extended suction unit with tangential air entry has been proven. For a more accurate analysis of the distance at which an extended extractor with tangential air intake can be placed relative to the dust source, it is necessary to conduct a dispersed dust analysis. For effective capture of specific dust, calculations should be based on the size of the dust, which occupies a larger share in the distribution of fractions. The smaller the dust particle, the further the suction device can be located. To visualize the experimentally obtained results, simulation was performed in the FlowVision software in accordance with the mathematically calculated initial data. During the simulation of the movement of dusty air in an extended extractor with a tangential entry into the system, the occurrence of swirling of the air flow has been proven. Due to this formation, the largest fractions of dust will move along the walls of the air duct. This makes it possible to use extended extractors to remove coarse fractions of dust contained in polluted air, organizing the removal of air moving near the walls of the air duct. Keywords: carbon dust, aerodynamic calculation, engineering simulation, occupational diseases, occupational health.

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“…Modeling the distribution of ions in work [9] is geometric, that is, the recombination of ions in the process of their distribution is not taken into consideration. Article [10] shows the possibility of using ultrasonic emitters for air ionization due to the baloelectric effect. It assesses the quantitative characteristics of ionization using water of various chemical composition.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Ultrasonic humidifiers are produced industrially and are fundamentally indistinguishable from those given in [10]. Therefore, it is advisable to use such a humidifier to investigate the change in the ion composition of air in an isolated room along with changes in temperature and relative humidity.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Monitoring and management ion concentrations in the air of industrial and public premises

Bolibrukh

Glyva

Kasatkina

et al. 2022

EEJET

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This paper reports a substantiated method and a designed device for controlling the concentrations of air ions in premises in accordance with the European standards SBM 2015. The use of an ultrasonic humidifier with a capacity of 25 W for two hours increases the concentration of negative ions around the device from 240 to 560 cm-3, positive ones ‒ from 260 to 410 cm-3. The intensity of the electrostatic field of a polymeric coating decreases from 5.1 to 0.2 kV/m. The disadvantage of the humidifier is a small radius of influence (1.0–1.5 m) and the inability to control the polarity of ions. It has been experimentally established that air cooling systems (split systems) deionize the air of the premises. Degrees of deionization and dominating polarity are unpredictable and different for devices of different manufacturers and brands. To control the ion composition of the air simultaneously with the maintenance of normative relative humidity and stresses of static fields, the structure was proposed and the effectiveness of a bipolar ultrasonic air ionizer with adjusted performance and dominating polarity has been tested. The maximum productivity of the ionizer is 4,000–5,000 cm-3. The radius of exposure is 5 m (reducing the concentration of ions with a distance to 500 cm-3). To pass the ionized air through an air capacitor, the number and predominant polarity of air ions are regulated by the polarity and voltage on the covers of the capacitor. It was established that in order to service a room with an area of 50 m2, an ultrasonic emitter with a capacity of 25 W would suffice. The adjustability of the device performance makes it possible to reduce or increase the service area. The ability to purify air from suspended particles is shown. During the two hours of operation of the ionizer, the dust content decreased from 4.3–4.4 mg/m3 to 1.4–1.6 mg/m3.

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Studying and substantiation of the method for normalization of airionic regime at industrial premises at the ultrasonic ionization of air

Cited by 8 publications

References 7 publications

Identifying regularities in the propagation of air ions in rooms with artificial air ionization

Identifying regularities in the propagation of air ions in rooms with artificial air ionization

Research of the Aerodynamic Process of Carbon Dust Removal From the Working Zone

Monitoring and management ion concentrations in the air of industrial and public premises

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Studying and substantiation of the method for normalization of air­ionic regime at industrial premises at the ultrasonic ionization of air

Cited by 8 publications

References 7 publications

Identifying regularities in the propagation of air ions in rooms with artificial air ionization

Identifying regularities in the propagation of air ions in rooms with artificial air ionization

Research of the Aerodynamic Process of Carbon Dust Removal From the Working Zone

Monitoring and management ion concentrations in the air of industrial and public premises

Contact Info

Product

Resources

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Studying and substantiation of the method for normalization of airionic regime at industrial premises at the ultrasonic ionization of air