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Готові списки джерел за темами / Rotor-pulsation apparatus / Статті в журналах

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Статті в журналах з теми "Rotor-pulsation apparatus"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 липня 2025

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1

Obodovych, Oleksandr, Larysa Sablii, Vitalii Sydorenko, and Bogdan Tselen. "Improving the efficiency of calcium hydrocarbonate removal and reducing water hardness through discrete pulse energy input." Eastern-European Journal of Enterprise Technologies 4, no. 6 (124) (2023): 28–34. http://dx.doi.org/10.15587/1729-4061.2023.286005.

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For municipal water supply systems, industrial enterprises, and thermal plants, the content of mineral impurities in water is regulated, which necessitates the use of technologies for their removal. The object of study was water from an artesian well, which was treated on a rotor-pulsation apparatus that implements the principle of discrete-pulse energy input in an aeration-oxidizing setup of rotor type. The effect of the principle of discrete-pulse energy input on the process of extracting calcium bicarbonate from water to reduce its hardness is studied. It was determined that when treating w

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2

Obodovych, O. M., B. Y. Tselen, О. О. Pereiaslavtseva, and O. E. Stepanova. "DISCRETE PULSE INPUT OF ENERGY IS AN EFFECTIVE METHOD OF REMOVING CALCIUM HYDROCARBONATE AND REDUCING WATER HARDNESS." Thermophysics and Thermal Power Engineering 46, no. 3 (2024): 33–43. https://doi.org/10.31472/ttpe.3.2024.4.

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Анотація:

For municipal water supply systems, industrial enterprises, and thermal plants, the content of mineral impurities in water is regulated, which necessitates the use of technologies for their removal. The object of study was water from an artesian well, which was treated on a rotor-pulsation apparatus that implements the principle of discrete-pulse energy input in an aeration-oxidizing setup of rotor type. The effect of the principle of discrete-pulse energy input on the process of extracting calcium bicar- bonate from water to reduce its hardness is studied. It was determined that when treating

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3

Obodovych, O. M., V. V. Sydorenko, B. Y. Tselen, and T. A. Rezakova. "METHOD OF REDUCING WATER HARDNESS SALTS AND HEAT AND MASS EXCHANGE EQUIPMENT FOR ITS IMPLEMENTATION." Thermophysics and Thermal Power Engineering 49, no. 2 (2023): 87–94. http://dx.doi.org/10.31472/ttpe.2.2023.10.

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Thousands of steam and water boilers of medium and low parameters operate in the country's industry, municipal energy, and agriculture. Their reliable work is largely determined by maintaining a rational water-chemical regime. Dissolved impurities that affect the operation of boiler equipment primarily include hardness salts. When using hard water, scale is formed on the surfaces, heat transfer deteriorates, and pipes are overheated from the heating side, which can lead to their destruction. The purpose of the work is to improve the quality of softened water, reduce the consumption of re

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4

Gorobets, V., O. Obodovych, V. Trokhanyak, and A. Serdyuk. "Rotary-pulsation apparatus for preparation of liquid grain feed." Energy and automation, no. 5(51) (October 28, 2020): 15–31. http://dx.doi.org/10.31548/energiya2020.05.015.

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Existing feed devices use methods of grinding grain and other components of the feed mixture in hammer crushers, which requires significant costs of mechanical (electrical) energy. Therefore, it is necessary to develop devices with a high degree of impact on the treated environment, which increases productivity and reduces energy consumption in technological processes. Such devices include rotor-pulsation devices, the principle of operation of which is based on the method of discrete-pulse energy input. The basis of this method is a multifactorial effect on the treated liquid homogeneous or he

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5

Obodovych, O. M., V. O. Khomenko, V. V. Sydorenko та O. E. Stepanova. "DISCRETE-PULSE ENERGY INPUT (DРEІ) AND ITS IMPLEMENTATION USING ROTOR-PULSATION APPARATUS". Thermophysics and Thermal Power Engineering 46, № 1 (2024): 29–38. https://doi.org/10.31472/ttpe.1.2024.4.

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The article provides an overview of the design features of rotor-pulsation devices in which the method of discrete-pulse energy input is implemented – a method of intensification of heat and mass exchange processes, which contributes to the development and implementation of energy-saving technologies in various industries. The idea of DPEI is to accumulate the energy previously distributed in the working volume in a stationary and arbitrary state in local discrete points of the system and then implement it in pulses to achieve the necessary thermophysical effects. Non-traditional methods of in

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6

Lavrova, Inna, W. Saeed Ammar, Sergiy Copylov, Vladyslava Vladymyrenko, and Anna Cherkashina. "Research and Selection of Optimal Hydrodynamic Parameters of Rotary Cavitation Devices for Processing Oil Blends and Distillates." Applied Mechanics and Materials 917 (October 13, 2023): 19–25. http://dx.doi.org/10.4028/p-bbedy2.

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This article presents the results of experimental processing of hydrocarbons (petroleum and mixtures based on them) on a laboratory stand. Cavitation treatment was carried out in flow-type rotary-pulsation apparatus with different impeller diameters and rotor rotation frequencies. The aim of the work was to determine the most effective processing mode for oil blends and distillates within the framework of laboratory experiments.

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7

Maksimenko, M. Z., and Yu M. Maksimenko. "Determination of degree of dispersion of liquids in conical rotor-pulsation apparatus." Chemistry and Technology of Fuels and Oils 31, no. 6 (1995): 275–77. http://dx.doi.org/10.1007/bf00727604.

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8

Fedorov, A. V., T. A. Khmel’, M. S. Vasilishin, A. G. Karpov, and A. A. Kukhlenko. "Analysis of the operational characteristics of a rotor-pulsation apparatus with an impeller." Journal of Engineering Physics and Thermophysics 82, no. 5 (2009): 821–27. http://dx.doi.org/10.1007/s10891-009-0263-0.

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9

DEKHANDJI, Fatma Zohra, and Hamid BENTARZI. "Theoretical and Experimental Investigation of the Supply Voltage Unbalance Effects on Squirrel Cage Induction Motors." Algerian Journal of Signals and Systems 4, no. 2 (2019): 51–60. http://dx.doi.org/10.51485/ajss.v4i2.82.

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Voltage unbalance is one of the power quality problems causing a lot of ill effects on induction motors. These are namely: Overheating, line-current unbalance, derating, torque pulsation, and inefficiency. The objective of the present work is to assess and quantify the effects of voltage unbalance on induction motors using both theory and experimentation. The analytical study is performed using the complex voltage unbalance factor model of this problem. The work deals specifically with the influence of the variations in the complex angle of the voltage unbalance factor on the stator and rotor

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10

Ободович, Александр Николаевич, and Анна Юрьевна Лымарь. "Researches hydraulic characteristics of a rotor-pulsation apparatus in processing of water-grain mix." Eastern-European Journal of Enterprise Technologies 1, no. 7(67) (2014): 19. http://dx.doi.org/10.15587/1729-4061.2014.20034.

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11

Omarov, B. T., K. T. Zhantasov, M. K. Zhantasov, and Z. M. Altybayev. "Changes in the Physicochemical Characteristics of Humic Acids in a Hydrodynamic Rotor-Pulsation Apparatus." Eurasian Chemico-Technological Journal 25, no. 4 (2024): 219–26. http://dx.doi.org/10.18321/ectj1544.

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The work presents research results of the change comparison of brown coals and the study of the physicochemical properties of humic substances obtained from brown coals of the Karazhyra, Ekibastuz, and Kyzyl-Kiya deposits after hydrodynamic treatment in a rotary-pulsation apparatus. It is shown that the hydromechanical effect on humic acids leads to a change in their composition, accompanied by a decrease in the degree of aromaticity and an increase in the content of oxygen-containing fragments. Mechanical treatment of brown coals under oxidizing conditions maximizes the efficiency of extracti

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12

Obodovych, О. М., B. Ya Tselen, O. Ye Stepanova, A. Ye Nedbailo, and Yu V. Bulii. "RESEARCH OF THE RHEOLOGICAL INDICATORS OF WATER-OIL EMULSIONS DEPENDING ON THE TECHNICAL EQUIPMENT AND THE TECHNOLOGICAL PARAMETERS OF THEIR PREPARATION." Energy Technologies & Resource Saving 83, no. 2 (2025): 69–78. https://doi.org/10.33070/etars.2.2025.06.

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The analysis of the dependence of the density and viscosity of the water-oil emulsion not only on the temperature, the quantitative content of the water phase in it, but also on the technical means and technological parameters of its preparation was carried out. The purpose of the work is to study the changes in the rheological parameters of water-oil emulsions depending on the equipment used and the technological parameters of their preparation. A high degree of dispersion is ensured by hydrodynamic factors and the mechanical effect on the particles of a heterogeneous environment, which consi

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13

Zyryanov, М. А., S. О. Medvedev, and А. P. Mokhirev. "Technological scheme of wood resources utilization model development." BIO Web of Conferences 93 (2024): 01019. http://dx.doi.org/10.1051/bioconf/20249301019.

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Анотація:

In the present work the justification of the urgency of solving the issue of environmental friendliness of materials produced from wood resources is given. The analysis of the production technology of semifinished wood-fiber products is carried out at the current stage of development of the board industry. The estimation of board formation properties of the wood fiber mass produced in disk blade grinding machines is given, and the inefficiency of the used equipment is substantiated. The expediency of using the equipment with cavitation effect as the second grinding stage in the production of w

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14

Obodovych, Oleksandr, Vitalii Sydorenko, and Bogdan Tselen. "Effect of mechanisms of discrete-pulse energy input on the physico-chemical indicators of oak extracts." Acta Periodica Technologica, no. 55 (2024): 177–87. http://dx.doi.org/10.2298/apt2455177o.

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One of the most important stages in the creation of a number of spirits is aging. The aim of the work is to study the effect of discrete-pulse energy input on the physicochemical parameters of oak extracts. It was determined that it is most effective to process oak chips in a rotor-pulsation apparatus with a flow shear rate of 50? 103 s-1 and a duration of 11 hours and an extractant strength of 60% by volume. An increase in the extraction temperature from 25 to 40?? contributes to an increase in the optical density of solutions from 0.64 to 0.78 units, while energy consumption does not increas

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15

Omelyanyuk, Maxim, Alexey Ukolov, Irina Pakhlyan, Nikolay Bukharin, and Mouhammad El Hassan. "Optimization of Rotational Hydrodynamic Cavitation Reactor Geometry." Fluids 9, no. 10 (2024): 244. http://dx.doi.org/10.3390/fluids9100244.

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Анотація:

A Rotary-Pulsation Apparatus (RPA), also known in the literature as a Rotational Hydrodynamic Cavitation Reactor (RHCR), is a device which typically consists of a rotating mechanism that generates pulsations or vibrations within a fluid. This can be achieved through various means such as mechanical agitation, pneumatic pulses, or hydraulic forces. It is widely used in food, chemical, pharmaceutical, and microbiological industries to improve the mixing of different fluids, dispersion, pasteurization, and sterilization. In the present paper, a CFD study was conducted to develop and optimize the

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16

Turchina, T. Ya, L. Yu Avdieieva, A. A. Makarenko, and M. M. Kozak. "INVESTIGATION OF THE EFFECT OF DPEI-TREATMENT AND BIOPOLYMER ADDITIVES ON THE CHARACTERISTICS OF FRUIT HETEROGENEOUS SYSTEMS AS OBJECTS OF SPRAY DRYING." Thermophysics and Thermal Power Engineering 46, no. 1 (2024): 18–28. https://doi.org/10.31472/ttpe.1.2024.3.

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This research focuses on the crucial stage of raw material preparation in spray drying technologies, as it defines the potential properties of liquid heterogeneous systems and the characteristics of the resulting powder. The objective of this study was to examine the influence of DPEI treatment on different types of fruit and vegetable raw materials in two types of rotor-pulsation apparatus, along with the introduction of biopolymer additives, on the characteristics of obtained heterogeneous systems destined for spray drying. The article presents the results of investigating the effects of two

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17

Sabitov, Yerlan, Duman Dyussembinov, and Daniyar Bazarbayev. "Effect of modifiers and mineral additives from industrial waste on the quality of aerated concrete products." Technobius 1, no. 4 (2021): 0010. http://dx.doi.org/10.54355/tbus/1.4.2021.0010.

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The given article is devoted to research of influence of polymer modifiers and mineral additives on quality of composite aerated concrete products. When selecting the composition of composite aerated concrete local raw materials and components were used: portland cement, sand, aluminum powder, polyvinyl acetate, fly ash, post-alcoholic bard and whey of milk. Preliminary polyvinyl acetate was combined with binder mixing water at a temperature above 55ºC to obtain a readily soluble polymer emulsion. Dispersion was carried out with a rotary-pulsation apparatus at a pressure of 0.5-1.0 MPa and a r

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18

Davydenko, Borys, Oleksandr Obodovych, and Vitalii Sydorenko. "Characteristics of flow and heat transfer in rotor-pulsation apparatus during delignification of wheat straw in technology of bioethanol production." Ukrainian Food Journal 10, no. 1 (2021): 171–81. http://dx.doi.org/10.24263/2304-974x-2021-10-1-15.

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19

Василишин, М. С., А. Г. Карпов, О. С. Иванов, and А. Г. Овчаренко. "DESIGN FEATURES OF RPA FOR “WET” GRINDING OF FIRE AND EXPLOSIVE DISPERSED MATERIALS." Южно-Сибирский научный вестник, no. 6(52) (December 31, 2023): 111–15. http://dx.doi.org/10.25699/sssb.2023.52.6.014.

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Анотація:

Приведены рекомендации по выбору конструктивных и технологических параметров при проектировании многоступенчатых роторно-пульсационных аппаратов (РПА), предназначенных для «мокрого» измельчения пожаро- и взрывоопасных дисперсных материалов. Отмечается, что для повышения безопасности, операцию следует осуществлять в дисперсионной среде, являющейся флегматизатором по отношению к обрабатываемому материалу. Приводятся дополнительные критерии, которым должно соответствовать разрабатываемое оборудование. Констатируется, что в наибольшей степени требованиям технологической эффективности и производств

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20

Obodovych, O. M., V. O. Khomenko, V. V. Sydorenko, and O. E. Stepanova. "DISCRETE-PULSE INPUT OF ENERGY AS INCREASE IN THE EFFICIENCY OF SUGAR PRODUCTION." Thermophysics and Thermal Power Engineering 46, no. 4 (2024): 25–32. https://doi.org/10.31472/ttpe.4.2024.3.

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Анотація:

The article describes techniques and technologies of domestic sugar production, technologies for obtaining and subsequent purification of diffusion juice. The use of discrete-pulse energy input is proposed to increase the efficiency and improve the purification of the diffusion juice. The efficiency of sugar beet raw material processing largely depends on its quality, production technology and subsequent purification of the diffusion juice. The current state of equipment and technology of domestic sugar production does not ensure the sufficient completeness of sucrose extraction from beets, hi

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21

Obodovych, Oleksandr, Larysa Sablii, Anna Nedbailo, Bogdan Tselen, and Olesja Stepanova. "TECHNOLOGIES AND HEAT EXCHANGE EQUIPMENT FOR TREATMENT AND UTILIZATION OF WASTEWATER FROM THERMAL POWER PLANTS." WATER AND WATER PURIFICATION TECHNOLOGIES. SCIENTIFIC AND TECHNICAL NEWS 38, no. 1 (2024): 3–13. https://doi.org/10.20535/2218-930012024315777.

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The article considers the problems of hydrosphere pollution in Ukraine, in particular, those related to the activities of thermal power plants. The main sources of discharges that arise during their operation are described, including wastewater from cooling systems, exhaust gas desulfurization systems, as well as water contaminated with petroleum products. The classification of wastewater, its features and consequences for the ecosystem emphasize the relevance of compliance with discharge standards and, depending on their types, allow you to choose a method for their purification and disposal.

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22

Bulii, Yu V., and V. V. Sydorenko. "FEATURES OF THE PRETREATMENT OF WHEAT STRAW FOR HYDROLYSIS." Thermophysics and Thermal Power Engineering 46, no. 3 (2024): 61–68. https://doi.org/10.31472/ttpe.3.2024.7.

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Анотація:

One of the stages of the complex processing of plant raw materials is the separation of lignin and hemicellulose from the lignocellulosic complex, followed by obtaining valuable chemical products or fuel from it. This stage is an integral part of the pretreatment of raw materials for hydrolysis. But this stage is the most energy-consuming of the fuel ethanol obtaining, and aims to destroy the stable structure of cellulosic biomass and make cellulose more accessible to enzymes that convert carbohydrate polymers into fermentable sugars. High energy costs of pretreatment of raw materials for hydr

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23

Shulaev, Nikolay S., Tatiana V. Shulaeva, and Sergey V. Laponov. "Energy consumption of emulsification processes in small-sized mix apparatuses." Butlerov Communications 61, no. 1 (2020): 86–90. http://dx.doi.org/10.37952/roi-jbc-01/20-61-1-86.

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Анотація:

There is given in this thesis a general method of calculation of power consumption for emulgation in systems liquid-liquid in small-size mixing devices (rotor-pulsation apparatuses and rotor-disc mixers). This mixing devices, have shown a high efficiency at processing of liquid-liquid systems and are wide using chemical processes. The base of calculation method is an energy ratio to describe of developed turbulent motion, pulsation intensity of which is enough for create of dispersed particles of given size and concentration, which provide a necessary surface of phases contact. It is shown, th

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24

Gorobets, V., and A. Serdyuk. "EXPERIMENTAL STUDY OF LIQUID GRAIN FEED PREPARATION PROCESSES IN A ROTOR-PULSATION APPARATUS." Energy and automation 2022, no. 4 (2022). http://dx.doi.org/10.31548/energiya2022.04.074.

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Анотація:

The use of a rotary-pulsation device makes it possible to carry out the processes of mixing, grinding, dissolving feed components with simultaneous heating of the liquid mass and a number of other technological processes.The purpose of the work was to conduct an experimental study of the main characteristics of the process of preparing liquid grain fodder in a rotary-pulsation apparatus in order to obtain their optimal properties for consumption by livestock.The article presents the results of experimental studies of the processes of preparation of liquid grain feed in the apparatus using rota

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25

Gorobets, V., and A. Serdiuk. "INVESTIGATION OF THE STARTING CHARACTERISTICS OF AN ASYNCHRONOUS MOTOR FOR DRIVING A ROTOR-PULSATION APPARATUS USING A FREQUENCY CONVERTER." Energy and automation 2023, no. 1 (2023). http://dx.doi.org/10.31548/energiya1(65).2023.122.

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The method was used to carry out mathematical modeling for the follow-up of transitional processes during the start-up of an asynchronous engine to drive a rotary-pulsation apparatus for the preparation of water-grain feed for the clarity and frequency of the frequency changer. Mathematical modeling of transient processes during the start-up of an asynchronous electric motor for driving a rotary-pulsation apparatus for the preparation of liquid grain feed in the absence and presence of a frequency converter was carried out using the Matlab Simulink application program package. The following st

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26

Obodovich, O., V. Gorobets, V. Sydorenko, E. Pereiaslavtseva, and T. Rezakova. "HEAT AND MASS EXCHANGE PROCESSES DURING THE DELIGNIIFICATION OF WHEAT STRAW IN THE ROTOR-PULSATION APPARATUS." Energy and automation 2022, no. 6 (2022). http://dx.doi.org/10.31548/energiya2022.06.017.

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Анотація:

In the production of biofuel in Ukraine, wheat and sunflower are most widely used. The production of bioethanol from lignocellulosic raw materials (wheat straw) has both a number of advantages and disadvantages compared to traditional raw materials containing starch, due to the complex structure of lignocellulosic biomass. A mandatory stage of raw material processing is its preliminary preparation for hydrolysis. One of the tasks of the research is the delignification of wheat straw and the improvement of the efficiency of the preliminary treatment of lignocellulosic raw materials using the ph

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