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Journal articles on the topic 'Technological cooling modes'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Alesenko, Denis, Vasiliy Matyushev, Irina Chaplygina, and Aleksey Belyakov. "IMPROVING THE DESIGN AND OPTIMIZING THE OPERATING MODES OF THE EXTRUDATE COOLER." Bulletin of KSAU, no. 3 (March 10, 2025): 229–45. https://doi.org/10.36718/1819-4036-2025-3-229-245.

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The objective of the study is to improve the technological process of obtaining an extrudate by modifing the material cooling link and determining the optimal modes of its operation to improve the efficiency of the system as a whole. Tasks: to modify the extrudate cooling link; to reveal the patterns associated with the duration and energy efficiency (energy intensity) of the material cooling process. The analysis of the "extrusion – extrudate cooling" system revealed the factor and result indicators of this system, allowing to obtain numerical estimates of the statistical characteristics. The

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2

Skakov, M. K. "THERMAL TECHNOLOGICAL CONDITION OF IVG.1M RESEARCH REACTOR CORE UNDER VARIOUS OPERATING MODES." Eurasian Physical Technical Journal 21, no. 3(49) (2024): 45–53. http://dx.doi.org/10.31489/2024no3/45-53.

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The relevance of the study is related to the determination of the thermal characteristics of the IVG.1M research reactor core with the low enriched uranium fuel under the nominal and design operating modes. The thermal technological condition of the IVG.1M research reactor during the start-up are determined by the readings of the temperature, pressure and coolant flow sensors of the information and measuring system. The indirect methods including the computer simulating ones are used to determine the temperature of the core structural materials and the distribution of the coolant temperature b

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3

Platov, Sergey, V. A. Nekit, and Nicolay Urtsev. "Investigation of Temperature-Time Modes of Rolling of Thick-Sheet Steel and Mechanical Properties of Finished Products." Solid State Phenomena 316 (April 2021): 380–84. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.380.

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The article is devoted to the study of technological modes of hot rolling of tube steel on a thick-sheet mill and mechanical properties of the finished products. Five slabs were rolled under the experimental regime in accordance with the study plan. The temperature conditions of rolling at the final stage of deformation and the modes of accelerated cooling of rolled products were changed. Dependencies between technological parameters and mechanical properties allowed developing recommendations on improvement of technology of rolling and of the subsequent accelerated cooling of metal.

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4

Kharitonov, I. A., A. L. Goncharov, E. K. Titarev, and A. V. Nekhoroshev. "Investigation of the thermal state of the elements of a technological electron beam gun under long–term operating conditions." Journal of Physics: Conference Series 2077, no. 1 (2021): 012008. http://dx.doi.org/10.1088/1742-6596/2077/1/012008.

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Abstract The paper presents the results of a study of the thermal state of the elements of the cathode assembly of the ELA–15 welding electron gun. It was revealed that in short–term operating modes of the gun (up to 60 minutes) at any energy parameters of heating the hexaboride cathode, it is possible not to use forced cooling of the cathode assembly. The case temperature in such modes did not exceed 30°C. The increase in the temperature of the gun body occurred 15 minutes after the start of heating the cathode. In long–term operating modes with forced cooling of the gun, the temperature of t

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5

Kh Khoshimov, U., and S. Khushiev. "Method development for determining the energy-efficient mode of air-cooling devices’ operation." IOP Conference Series: Earth and Environmental Science 1142, no. 1 (2023): 012030. http://dx.doi.org/10.1088/1755-1315/1142/1/012030.

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Abstract When ensuring the normative limit of the heat of the gas transmitted to the main gas pipelines by means of air cooling devices of the gas transmission compressor station, the modes of parallel operation of the fan motors of the air cooling device system are considered. At the same time, a comparison was made of methods for adapting air cooling devices to factors affecting energy-efficient operating modes. As a result, based on a mathematical model of the combustion operating mode through a gas-air cooling device, the possibility of regulating the engine speed and increasing the energy

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6

Kotov, Boris, Vladimir Grishchenko, Yuriy Pantsir, and Igor Garasimchuk. "MATHEMATICAL MODELING OF TECHNOLOGICAL MODES OF HEAT-PUMPING SYSTEMS FOR TECHNOLOGICAL PROCESSES." Vibrations in engineering and technology, no. 2(101) (June 29, 2021): 85–91. http://dx.doi.org/10.37128/2306-8744-2021-2-9.

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One of the ways to increase the energy efficiency of the process of heat supply of technological facilities and production facilities of the agro-industrial complex is the use of heat pumps. Their use allows to increase the energy potential of heat carriers. To optimize the mode parameters and create systems for automatic control of the heat pump installation, it is necessary to establish a relationship between the parameters of the processes occurring in the elements of the installation by creating a mathematical model of non-stationary thermal modes. In the analysis of recent studies and pub

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Ziborov, Kyrylo, Serhii Fedoriachenko, Serhii Chebotarov, and Anton Kholodov. "Concerning the justification of the working characteristics and construction parameters of the bearing assembly of the upper support of the pellet furnace shafts." Bulletin of Kharkov National Automobile and Highway University 2, no. 101 (2023): 46–52. http://dx.doi.org/10.30977/bul.2219-5548.2023.101.2.46-52.

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Problem. Metallurgical industry requires raw material for further steel production. One of the technological chain element is grid furnace, equipped with shafts, which hold the grid with raw product during heating. Insufficient cooling of the shafts provides the durability decrease and interruption of the technological process during the shafts’ failure. The article presents the results of research into the working conditions of the upper support shafts of the metallurgical furnace. Goal. The goal of the paper is to find the absolute thermal expansion of the shaft by means of thermal tra

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8

Bohdanov, O., V. Derbaba, V. Ruban, and N. Nazarenko. "Classification of oiling and cooling technological means." Collection of Research Papers of the National Mining University 79 (December 30, 2024): 152–62. https://doi.org/10.33271/crpnmu/79.152.

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Purpose. The purpose of the study is to develop a comprehensive classification system for lubricating and cooling technological means (LCTM) and analyze their impact on the main parameters of the process of mechanical metal cutting, such as productivity, tool durability, surface quality of parts, cutting force and temperature deformations. In addition, the goal is to establish optimal conditions for using LCTM for different types of materials and processing modes. The methods. The research methodology included an analysis of scientific literature, classification of LCTM according to their aggr

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9

S.N., Koreshkov, Khvylia S.I., and Lapshin V.A. "The expert assessment of meat mass loss in the refrigeration chambers of meat and meat processing enterprises." Vsyo o myase, no. 5 (October 30, 2020): 36–39. http://dx.doi.org/10.21323/2071-2499-2020-5-36-39.

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The monitoring of beef meat losses in halves and quarters occurring during cooling technological processes at the industrial refrigeration enterprises depending on different technological factors is given in the article. These factors are: quick and accelerating one-stage cooling, quick twostage cooling, continuous and cycled modes of refrigeration chamber during cooling and storing, besides, the age of cattle, quality groups of meat, average temperature of freezing and the way of cooling the chamber, its defrosting and subsequent storage, duration of moisture drainage after wet cleaning and e

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10

Tulupov, O. N., A. B. Moller, and S. Y. Sarancha. "Increasing of Long Products Rolling Efficiency: Modernization of Stelmor Air Cooling Line to Obtain Sorbitized Wire Rod." Solid State Phenomena 265 (September 2017): 1116–22. http://dx.doi.org/10.4028/www.scientific.net/ssp.265.1116.

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Most national companies are seeking to reduce costs, improve technological processes and increase profitability. The steel industry is no exception - an example of cost reduction is a technology of sorbitized wire rod production. This technology can improve the performance characteristics of wore rod and reduce the number of patenting stages during metalware production. The developed technology has been tested in the CIS countries Stelmor lines, and its task is to eliminate the significant disadvantages of these lines: the absence of differential cooling on the conveyor width, insufficient coo

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11

Timoshpolsky, V. I., E. I. Marukovich, and I. A. Trusova. "Application of classical numerical methods in the calculation of solidification modes of a continuous ingot." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 3 (October 20, 2020): 41–47. http://dx.doi.org/10.21122/1683-6065-2020-3-41-47.

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This paper presents approaches to the computational analysis of solidification and cooling processes of continuously cast billets in order to improve and develop technological modes in the conditions of modern continuous casting machines using FEM.The application of modern numerical methods for solidification and cooling of workpieces on continuous casting machines is considered. The use of the finite element method is justified when using computational and experimental data for the development and improvement of casting technology.

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12

Savchenko, S. A., S. M. Volosovich, A. A. Kuchkov, I. V. Astapenko, and A. B. Sychkov. "Development of technology and development of production of reinforcement no. 6 of strength class A500S form 2f in coils according to the requirements of GOST 34028–2016." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 1 (April 10, 2024): 39–46. http://dx.doi.org/10.21122/1683-6065-2024-1-39-46.

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The article presents the results of research on the development and mastery of the technological process of rolling reinforcement in coils with a nominal diameter of 6 mm of strength class A500C of a double‑sided periodic profile of the 2f form, ensuring the required mechanical properties, improving complex quality indicators based on improving the chemical composition and technological modes of two‑stage cooling on the Stelmor line taking into account its cooling and transporting abilities. A method of hot rolling of reinforcement with a double‑sided crescent (2f) profile is proposed; technol

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13

Rakhmanova, Mafiiat, Amiiat Demirova, Magomed Akhmedov, Faina Azimova, Irada Gadzhibekova, and Zaurbek Abdulkhalikov. "High-temperature multilevel sterilization of canned goods with heat recovery and its constructive and technological support." E3S Web of Conferences 247 (2021): 01030. http://dx.doi.org/10.1051/e3sconf/202124701030.

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New technical solutions improving the process of thermal sterilization of canned products through the use of multilevel high-temperature modes and heat recovery have been considered and proposed. The essence of the developed method lies in the fact that the heat released by cooling cans with the product that has undergone thermal sterilization is used to heat other cans with the product queued for sterilization. In this mode of heat treatment, except in the last stage, the heat emitted by cooled cans that have already undergone heat treatment is used to heat up the canned food. Hence, the use

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14

Volkov, Оleh. "Developing a technological complex for restoring the properties of rolled rolls reduced in the process of grinding." Bulletin of Kharkov National Automobile and Highway University, no. 97 (September 5, 2022): 44. http://dx.doi.org/10.30977/bul.2219-5548.2022.97.0.44.

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Problem. The problem of increasing the resource of equipment for rolling production is on time. Rolling mills are a piece of equipment for rolling objects made of metals and alloys. They work in difficult operating conditions: at considerable loading, friction and the raised temperatures. As a result, there is a rapid wear of their work surfaces, which leads to defects. Due to the predominantly high cost of rolled rolls, it is better to restore them than to replace with new ones. This is more profitable economically and can be realized by using different methods of influencing the structural c

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15

Suleymanov, Sultan Khamidovich, Elman Sayad ogli Nabiev, Valery Grigorevich Dyskin, Mustafa Umerovich Djanklich, Oleg Andreevich Dudko, and Natalya Aleksandrovna Kulagina. "THE STUDY OF TECHNOLOGICAL REGIMES OF HARDENING BANDAGE STEEL OF THE CONCENTRATED FLOW OF ENERGY." Computational nanotechnology 6, no. 3 (2019): 11–15. http://dx.doi.org/10.33693/2313-223x-2019-6-3-11-15.

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The work is devoted to the development of technological modes of strengthening of the band steel of locomotive wheels by the method of thermal treatment with concentrated energy flow. Thermal treatment of the banding steel was carried out on a solar furnace at flow densities 320, 450 and 500 W/sm2. Quenching was carried out in air and water. Heating and cooling rates are important for quenching. If speed of cooling is less than critical speed ( V cr ≈ 50 deg/s), quenching is not observed. The hardness of the tempered steel samples after thermal treatment at a temperature of 800-1200°C and trea

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16

Nazarov, Maxim A., and Konstantin S. Galitskov. "Structural modeling of expanded clay cooling technological process in a drum cooler as a control object." Vestnik of Samara State Technical University. Technical Sciences Series 32, no. 4 (2024): 27–41. https://doi.org/10.14498/tech.2024.4.2.

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The technological process of expanded clay cooling in a drum cooler is considered as a control object with distributed parameters. Taking into account reasonable assumptions and simplifications, the dynamics of the process under consideration is described by a system of non-homogeneous differential equations in partial derivatives of the first order, the solution of which made it possible to obtain operators linking the control action and the main disturbances with the temperature of expanded clay in the drum cooler. The obtained operators of the mathematical model, which are transcendental tr

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17

Yarashev, Siroj, Gulnoza Azizova, and Nizomjon Usmonov. "Study of energy regularities of direct evaporative air-cooling modes." E3S Web of Conferences 563 (2024): 01012. http://dx.doi.org/10.1051/e3sconf/202456301012.

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The state of the air environment in modern agricultural buildings is ensured using microclimate air conditioning systems. However, traditional climate control systems and their equipment are quite expensive, energy-intensive and difficult to operate. Therefore, the problem of developing and using simpler, more reliable, energy-efficient microclimate conditioning systems and devices to create and maintain the required technological parameters of the air environment, ensuring a reduction in energy costs and increasing the productivity of agricultural production (for example, poultry houses), rem

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18

Borodulin, D. M. "Mathematical Support to Control Milk Temperature at Cooling Outlets." Proceedings of the Voronezh State University of Engineering Technologies 84, no. 1 (2022): 24–28. http://dx.doi.org/10.20914/2310-1202-2022-1-24-28.

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Automation of any production is impossible without the appropriate software for automation systems. Automatic control systems are used for various parameters of technological processes. Temperature is one of the main technological parameters in dairy production. Therefore, its control and regulation in various parts of technological lines is an important task for the automation of dairy production. For this, an information scheme of the technological control object was created with the designation of the controlled technological parameters. The following parameters were established as a result

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19

Merentsov, N. A., V. N. Lebedev, A. V. Persidskiy, and A. B. Golovanchikov. "Automatic control system for operation modes and calibration of technological parameters of evaporation cooling apparatuses." Journal of Physics: Conference Series 1515 (April 2020): 022004. http://dx.doi.org/10.1088/1742-6596/1515/2/022004.

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20

Kolbasnikov, Nicolay G., Oleg G. Zotov, and Aleksey A. Lukyanov. "Investigation of the Operational Reliability of the Rolled Rails According to the Various Technologies." Key Engineering Materials 651-653 (July 2015): 317–21. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.317.

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Based on experimental studies of the complex mechanical properties and microstructure, as well as simulation of rails rolling modes made from different steel manufacturers are shown the main technological approaches to obtain rails with high operational reliability . Found that, under the current production technology of domestic steel rails the adjustment of the chemical composition, temperature-deformation modes of rolling and cooling speed rate of the rails is suitable for reducing the negative free ferrite influence on rails durability.

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21

Tyulenev, Denis, Vladimir Sholom, Aleksey Abramov, and Dmitry Puzyrkov. "THE INFLUENCE OF COOLING PROPERTIES OF QUENCHING LIQUIDS AND HEAT TREATMENT MODES ON 40C2 STEEL HARDNESS." Transport engineering 2024, no. 1 (2024): 4–12. http://dx.doi.org/10.30987/2782-5957-2024-1-4-12.

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The paper objective is to develop a domestic quenching oil for hardening spring clips. The study results of the effect of quenching liquid cooling properties on 40C2 steel hardness are presented. Domestic quenching oil Rosoil-277, an analog of the imported oil Isorapid 277 (PETROFER Germany) is made - for quenching rail clips. The tests were carried out at the installation to determine the cooling characteristics of technological and quenching media. A water-polymer quenching liquid is selected as a substitute for quenching oil. The results of hardness measurements on 40C2 steel workpieces sho

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22

ZHDANOV, A. A., YU I. SIDYAKIN, V. V. AVDONIN, and A. V. ROGACHEV. "INVESTIGATION OF THE EFFECT OF STS ON SURFACE ROUGHNESS DURING LONGITUDINAL TURNING OF STEEL U10." IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY, no. 3(286) (March 2024): 7–13. http://dx.doi.org/10.35211/1990-5297-2024-3-286-7-13.

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The article presents preliminary research results that suggest that the well-known method of automated assignment of rational cutting modes in conditions of deserted technology on modern CNC lathes, which are essentially automated systems, can be applied to processing using lubricating and cooling technological means, which requires conducting the required number of experiments and building appropriate regression mathematical models. These studies are aimed at teaching automated systems in machine building to make independent decisions in the field of assigning machining modes based on prelimi

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23

Богатко, Н. М., та Н. І. Сахнюк. "Вплив санітарно-гігієнічного стану холодильних камер м’ясопереробних підприємств на безпечність м’ясної сировини за її зберігання". Вісник Полтавської державної аграрної академії, № 1 (28 березня 2013): 106–9. http://dx.doi.org/10.31210/visnyk2013.01.28.

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Технологічні режими охолодження м’яса в охолоджувальній (t = -1 ºС) та холодильній (t = -12 ºС) камерах не чинять бактеріостатичний вплив на життєдіяльність плісеневих грибів. Найбільша зараженість плісеневими грибами повітряного середовища та штукатурки стін камер (охолоджувальних і холодильних) спостерігалася в їх нижній частині на висоті 0,5 м від підлоги. Дотримання вимог технологічних процесів зберігання м’ясної сировини, якісна дезінфекція забезпечать задовільний санітарно-гігієнічний стан охолоджувальних та холодильних камер. Technological modes of meat cooling in the cooling (t =

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24

Savinkov, V. V., and I. A. Kovaleva. "Optimization of two-stage cooling conditions for wire rod diameter 5.5–6.5 mm of low-carbon steel grades in order to ensure the required degree of descaling mechanically before its subsequent processing." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 3 (October 5, 2018): 63–66. http://dx.doi.org/10.21122/1683-6065-2018-3-63-66.

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With the aim of obtaining scale with a high degree possibility of mechanical removal under the conditions of the section rolling shop No. 1, at the mill «150» JSC «Belarusian Metallurgical Works – Management Company of Holding «BMC» developed technological modes of production of wire rods made of low-carbon steel grades.The peculiarities of scale formation were studied, namely, the factors influencing the removability, obtaining the optimal thickness and its phase components on the wire rod diameter 5.5–6.5 mm in the cooling process immediately after rolling, intended for wire production.To ob

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25

Zhukov, V. P., M. D. Fomichev, E. V. Barochkin, E. A. Shuina, and S. I. Shuvalov. "Combined model of heat and mass transfer in cooling towers." Vestnik IGEU, no. 5 (October 31, 2023): 90–96. http://dx.doi.org/10.17588/2072-2672.2023.5.090-096.

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The priority directions of the scientific and technological policy of the Russian Federation include issues on research in the field of energy and resource saving technologies while generating heat and electric energy. One of the possible ways to implement it at thermal and nuclear power plants is to increase the efficiency of the operation of circulating cooling systems (COO). Modeling and optimization of circulating cooling systems with tower cooling towers is of particular relevance under modern conditions of a limited amount of low-mineralized water for charging circulating cooling systems

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26

Яуров, С. В., А. Д. Данилов, К. Ю. Гусев, and И. Н. Гусев. "Mathematical modeling of composite technological systems by the finite element method." МОДЕЛИРОВАНИЕ, ОПТИМИЗАЦИЯ И ИНФОРМАЦИОННЫЕ ТЕХНОЛОГИИ 11, no. 3(42) (2023): 24–25. http://dx.doi.org/10.26102/2310-6018/2023.42.3.024.

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Метод конечных элементов известен достаточно давно, однако его активное применение в направлении моделирования физических процессов началось вскоре после развития современных компьютерных машин. Одним из достоинств подобного моделирования является сокращение временных и финансовых затрат по сравнению с классическими экспериментами. В работе представлены результаты гидравлического расчета проектного режима работы сложной технологической системы методом конечных элементов. Расчет выполнялся с использованием теплогидравлического модуля CFX программного комплекса Ansys. При этом в составе расчетно

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27

González, Jinela, Dafni Mora, and Miguel Chen Austin. "The Thermal Network Approach to Model Occupants’ Heat and CO₂ Generation Interactions: A Case Study in an Office Building in Panama." Journal of Physics: Conference Series 2385, no. 1 (2022): 012015. http://dx.doi.org/10.1088/1742-6596/2385/1/012015.

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Abstract This investigation proposes a methodology to predict indoor air temperature and CO2 levels. For this, a two-occupant office inside a building in the Technological University of Panama is taken as a case study and modeled in Designbuilder simulation software validated via experimental data. Here, a mathematical model that considers internal heat gains by the occupants and CO2 emissions, including physical characteristics and activities developed, is constructed via the thermal network (RC) and system identification approaches. Three linear grey-box models are identified: a 4R2C for coo

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Паринов, Дмитрий, Dmitriy Parinov, Владимир Шамаев, Vladimir Shamaev, Илья Медведев, and Ilya Medvedev. "DEVELOPMENT OF PARAMETERS OF THE TECHNOLOGICAL PROCESS FOR MANUFACTURE OF SLEEPERS BLANKS FROM MODIFIED WOOD." Forestry Engineering Journal 8, no. 1 (2018): 158–69. http://dx.doi.org/10.12737/article_5ab0dfc4643417.34919882.

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The purpose of the work is to develop the parameters of technological modes, the production of modified wood for sleepers, the combination of drying, impregnation and pressing operations. During the research, the following meth-ods have been used: active experiment, laboratory method for determining the size and quality characteristics of the feedstock, laboratory method for carrying out the technological process for producing modified wood. As a result of the research, the parameters of the technological modes of drying, impregnation and pressing have been worked out for the first time, combi

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29

Фордуй, Сергій Георгійович, Андрій Миколайович Радченко, Анатолій Анатолійович Зубарєв, Володимир Володимирович Бойчук та Олексій Валерійович Остапенко. "РЕЗЕРВИ ПІДВИЩЕННЯ ЕФЕКТИВНОСТІ ТРАНСФОРМАЦІЇ ТЕПЛОТИ УСТАНОВКИ АВТОНОМНОГО ЕНЕРГОЗАБЕЗПЕЧЕННЯ". Aerospace technic and technology, № 4 (31 серпня 2019): 25–30. http://dx.doi.org/10.32620/aktt.2019.4.05.

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It is analyzed the efficiency of heat conversion in the integrated electricity, heat and cooling supply of the enterprise. The installation for energy supply includes two JMS 420 GS-N.LC GE Jenbacher cogeneration gas engines manufactured as cogeneration modules with heat exchangers for removing the heat of exhaust gases, scavenge gas-air mixture, cooling water of engine and lubricating oil. The heat of hot water is transformed by the absorption lithium-bromide chiller AR-D500L2 Century into the cold, which is spent on technological needs and for the operation of the central air conditioner for

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30

Ivanova, Tatiana N., Witold Biały, Jiři Fries, and Victor Nordin. "Technological Forecasting of Deformations in Flat Parts." Multidisciplinary Aspects of Production Engineering 3, no. 1 (2020): 1–12. http://dx.doi.org/10.2478/mape-2020-0001.

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AbstractThe deformation of a part occurring in the process of grinding directly influences its exploitation and quality parameters. The instability of shape and size, which occurs due to an imbalance of residual stress, can be the one of the major causes of deformation of a part. The decrease in stress slows down the deformation process. Considering the regularities of heat source intensity dependence on the grinding modes, it can be asserted that with increasing grinding depth and grinding wheel hardness, the value increases and it decreases with a growth in a speed of the part and the use of

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Belozerov, Vladimir I., Mikhail M. Zhuk, and Anna M. Terekhova. "Investigation of the small break conditions in the primary circuit of a VVER-1000 reactor*." Nuclear Energy and Technology 5, no. 1 (2019): 47–52. http://dx.doi.org/10.3897/nucet.5.33982.

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Modes with violation of the reactor plant cooling conditions on the primary circuit side of a VVER reactor were simulated using the TRAC-PD2 and Open FOAM thermohydraulic codes (TRAC-PD2 1981, OpenFOAM User Guide Version 1.6. 2009, OpenFOAM Programmer’s Guide Version 1.6. 2009) based on energy and mass conservation equations for the three-dimensional unsteady flow of a two-phase mixture. Coupled simulation of the dynamics of neutronic and thermohydraulic processes (TRAC-PD2 1981, OpenFOAM User Guide Version 1.6. 2009, OpenFOAM Programmer’s Guide Version 1.6. 2009, Bolshagin et al. 2009, Galani

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Belozerov, Vladimir I., Mikhail M. Zhuk, and Anna M. Terekhova. "Investigation of the small break conditions in the primary circuit of a VVER-1000 reactor*." Nuclear Energy and Technology 5, no. (1) (2019): 47–52. https://doi.org/10.3897/nucet.5.33982.

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Modes with violation of the reactor plant cooling conditions on the primary circuit side of a VVER reactor were simulated using the TRAC-PD2 and Open FOAM thermohydraulic codes (TRAC-PD2 1981, OpenFOAM User Guide Version 1.6. 2009, OpenFOAM Programmer's Guide Version 1.6. 2009) based on energy and mass conservation equations for the three-dimensional unsteady flow of a two-phase mixture. Coupled simulation of the dynamics of neutronic and thermohydraulic processes (TRAC-PD2 1981, OpenFOAM User Guide Version 1.6. 2009, OpenFOAM Programmer's Guide Version 1.6. 2009, Bolshagin et al. 2009, Galani

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33

Уткин, И. Ю., and Н. А. Мурашов. "THE USE OF ANALYTICAL CALCULATION METHODS FOR THE SELECTION OF WELDING MODES OF LONGITUDINAL SEAMS OF PIPES AND ANNULAR JOINTS OF PIPELINES OF STEELS OF STRENGTH CLASSES K65 AND K80." Metallurg, no. 7 (July 29, 2023): 46–50. http://dx.doi.org/10.52351/00260827_2023_07_46.

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Исследовано влияние химического состава сталей классов прочности К65 и К80 на кинетику распада аустенита, ударную вязкость и твердость зоны перегрева для скоростей охлаждения, характерных для многодуговой сварки под флюсом и ручной дуговой сварки. Определен диапазон скоростей охлаждения, в котором механические свойства отвечают нормативным требованиям для рассматриваемых способов сварки. С помощью методики аналитического расчета определены технологические параметры сварки, обеспечивающие подобранный диапазон скоростей охлаждения. The influence of the chemical composition of steels of strength

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34

M.A., Dibirasulaev, Belozerov G.A., Dibirasulaev D.M., Donetskikh A.G., and Ryzhova S.G. "To the development of scientifically based storage modes of meat and meat products in a supercooling state." Vsyo o myase, no. 5 (October 30, 2020): 40–45. http://dx.doi.org/10.21323/2071-2499-2020-5-40-45.

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One of the ways to ensure safety, preserve quality and increase the expiration date (storage) of meat with minimal technological processing of raw materials is the use of supercooling and storage technologies at subcryoscopic temperatures. Supercooling is a refrigeration processing process that provides lowering the meat temperature (1–2 °C) below the cryoscopic temperature without phase transformation of water into ice (supercooling). The phase transformation of water into ice upon freezing and freezing food products causes irreversible changes in them as a result of crystal formation in musc

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35

Bielikov, A. S., and Yu E. Strezhekurov. "APPLICATION OF UNMANNED AERIAL VEHICLES FOR LOCALIZED THERMOREGULATION AND VENTILATION OF WORKERS AT JOBSITES OF HIGH-TEMPERATURE INDUSTRIES." Ukrainian Journal of Civil Engineering and Architecture, no. 5 (023) (November 22, 2024): 44–49. http://dx.doi.org/10.30838/ujcea.2312.301024.44.1091.

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Problem statement. In metallurgical and petrochemical industries using high-temperature technological processes, there exists an issue of overheating of workers due to significant heat loads. To prevent such hazard, large industrial fans are installed directly at production sites providing air circulation over a wide area. However, their performance characteristics, operation modes and placement schemes do not always ensure adequate cooling of employees. There is a need to study this problem in order to develop measures for improving efficiency of such devices through their enhancement and opt

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36

Khudyakov, A. O., R. T. Shafikov, R. I. Valiakhmetov, A. V. Golik, E. A. Matrosov, and Yu S. Korobov. "SELECTION OF TECHNOLOGICAL PARAMETERS OF MODES FOR MANUAL ARC WELDING OF SHUT-OFF VALVES MADE OF STEEL ALLOYED WITH 3–4 % NICKEL." Problems of Gathering Treatment and Transportation of Oil and Oil Products, no. 4 (September 27, 2023): 112–24. http://dx.doi.org/10.17122/ntj-oil-2023-4-112-124.

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Body of ball valves can be manufactured from A350-LF3 steel according to the US standard ASTM A350, alloyed with nickel up to 4 %. This steel has a tendency to harden in the heat affected zone during welding. The results of computer simulation showed that cooling rates during shielded metal arc welding exceed the recommended range. This can lead to the formation of hardening structures, the development of cold cracks and a decrease in the performance properties of welded joints of ball valves made of A350-LF3 steel. To prevent the formation of cold cracks, the preheating and concurrent h

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Kondratiev, N. A., E. I. Khlusova, D. M. Anisimov, and O. D. Borovskaya. "Selection of parameters of high-speed thermodeformation of Cr–Ni–Mo steel processing on the basis of imitation modeling." Voprosy Materialovedeniya, no. 1(117) (October 25, 2024): 5–19. http://dx.doi.org/10.22349/1994-6716-2024-117-1-5-19.

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The temperature of the end of finishing stage, cooling rate and coil winding temperature are structure-sensitive parameters for bainite-grade steels in the production of plate less than 10 mm thick. Simulation modeling of high-speed thermo-deformation processing of Cr–Ni–Mo bainitic steel samples has been carried out in order to select the most rational technological modes in continuous hot rolling mills. The influence of strain rate and temperature as well as niobium and vanadium microalloying additives on phase transformations has been investigated.

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Perchevska, Liudmyla, Oleksandr Drozdenko, and Kateryna Drozdenko. "Shifting the operating frequency of the piezoceramic electroacoustic transducer langevin type using passive cooling methods." ScienceRise, no. 4 (August 31, 2021): 3–10. https://doi.org/10.21303/2313-8416.2021.002019.

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The object of research: the shift of resonant frequency of the piezoceramic electroacoustic transducer Langevin type depending on the shape of the back plate. Investigated problem: the relationship between changes in shape of back plate of the Langevin type transducer with the resonant frequency of the oscillating system. Search quantitative contribution to shift the resonant frequency of each of the modifications: shape, diameter, thickness, weight of back plate. The main scientific results: vibration modes of a transducer with a back plate with horizontal and vertical radiator ribs were obta

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Matrosov, M. Yu, P. G. Martynov, A. V. Mitrofanov, K. Yu Barabash, T. V. Goroshko, and M. I. Zvereva. "Study of the thermal treatment modes influence on the forming of microstructure and specified complex of mechanical properties of high-strength sheet product with guaranteed level of hardness (400–450 HB) of low-alloyed steel." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 75, no. 4 (2019): 480–87. http://dx.doi.org/10.32339/0135-5910-2019-4-480-487.

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High-strength sheet product of low-alloyed steel, used at manufacturing of heavy-loaded structures, must have, apart from wear resistance, high toughness, good weldability, ability to hot and cold forming, machinability and low cost. Combination of these properties based on forming fine grain austenite structure before the martensitic transformation at definite its thermal treatment modes. Results of study of microstructure, fine structure and mechanical properties of high-strength boron-containing low-alloyed steel after different technological methods of the rolled product manufacturing pres

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Lengerov, Angel, Desislava Petrova, and Martin Bozhakov. "TECHNOLOGICAL ASSURANCE OF THE MILLING PROCESS OF PRISMATIC CHANNELS IN HEAT EXCHANGE ALUMINUM ALLOYS." ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 22, 2024): 154–57. http://dx.doi.org/10.17770/etr2024vol3.8163.

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When milling prismatic grooves in aluminum alloy products, the technological parameters of the process must ensure the specified accuracy and processing performance. This guarantees the maximum heat exchange properties of the surfaces of the processed parts, critical for applications where efficient thermal management is essential. Enhancing these properties can significantly impact the operational efficiency of systems in aerospace, automotive, and electronics industries. Articles on the interrelationship of cutting modes and technological and energy parameters of the milling process of prism

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Chmilenko, V. V., Y. V. Shanin, A. A. Khorshev, A. S. Bondar, Qi Zhang, and D. N. Bondarenko. "Modeling of technological parameters of induction surface hardening based on generalized experimental studies." LETI Transactions on Electrical Engineering & Computer Science 15, no. 2 (2022): 67–78. http://dx.doi.org/10.32603/2071-8985-2022-15-2-67-78.

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The article discusses the modeling of induction surface hardening technology of low-alloy carbon steels with a carbon content of 0.2 to 0. 8 %. To optimize technological parameters, such as heating power and time, current frequency and quenching depth, experimental data were generalized: dependences of austenization and homogenization temperatures heated steel on the heating rate, carbon content and grain size of the initial structure. Also, on the basis of experimental data, the dependences of austenite grain growth on the heating rate and temperature are obtained. A nonlinear coupled electro

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Deineko, L. M., A. O. Butenko, A. I. Kabak, Yu V. Shportko, V. L. Pinchuk, and L. G. Hrebonkina. "DEVELOPMENT OF INNOVATIVE TECHNOLOGY AND HARDENING EQUIPMENT FOR THE IMPLEMENTATION OF HARDENING HEAT TREATMENT OF METAL PRODUCTS USING FLUIDIZED BULK MATERIALS (PART 1)." Ukrainian Journal of Civil Engineering and Architecture, no. 4 (022) (September 28, 2024): 33–47. http://dx.doi.org/10.30838/j.bpsacea.2312.300824.33.1072.

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Statement of the problem. One of the main problems faced by a modern enterprise is the search for ways to improve the efficiency of its activities. For the effective functioning of the thermal units of toolmaking industries, the simultaneous availability of heating and quenching devices with different heating and cooling media is required. This explains the desire of manufacturers and scientists to find technological, cheap, environmentally friendly heating and cooling media that can provide the required heat treatment parameters and high quality of the processed parts. The purpose of the arti

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Osadchuk, Eugeniy, and Oleksandr Titlov. "ANALYSIS OF THE CLIMATIC FEATURES OF THE REGIONS OF THE PRIMARY APPLICATION OF THE SYSTEMS FOR PRODUCING WATER FROM THE ATMOSPHERIC AIR." ScienceRise 4 (August 31, 2020): 3–9. http://dx.doi.org/10.21303/2313-8416.2020.001390.

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The object of research is the thermal and humidity processes occurring during artificial cooling of atmospheric air to the dew point temperature in the evaporators of refrigeration machines of the compression and absorption type. This study solves the problem of finding energy efficient heat and humidity modes for cooling atmospheric air to the dew point temperature in regions with a shortage of water resources and high solar installations. It is shown that practically in all considered climatic zones with a shortage of water resources, the process of obtaining water from atmospheric air is mo

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44

Perchevska, Liudmyla, Oleksandr Drozdenko, and Kateryna Drozdenko. "Shifting the operating frequency of the piezoceramic electroacoustic transducer langevin type using passive cooling methods." ScienceRise, no. 4 (August 31, 2021): 3–10. http://dx.doi.org/10.21303/2313-8416.2021.002019.

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The object of research: the shift of resonant frequency of the piezoceramic electroacoustic transducer Langevin type depending on the shape of the back plate. Investigated problem: the relationship between changes in shape of back plate of the Langevin type transducer with the resonant frequency of the oscillating system. Search quantitative contribution to shift the resonant frequency of each of the modifications: shape, diameter, thickness, weight of back plate. The main scientific results: vibration modes of a transducer with a back plate with horizontal and vertical radiator ri

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45

Milykh, V. I., V. Р. Shaida, and O. Yu Yurieva. "Analysis of the thermal state of the electromagnetic mill inductor with oil cooling in stationary operation modes." Electrical Engineering & Electromechanics, no. 3 (April 23, 2023): 12–20. http://dx.doi.org/10.20998/2074-272x.2023.3.02.

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Introduction. An electromagnetic mill (EMM) for the technological processing of various substances, which is based on the stator of a three-phase induction motor, is being studied. The stator winding has an increased current density, so the mill is provided with a system of forced cooling with transformer oil. Problem. Currently, there are no works on the thermal state calculation of the EMM with the given design and oil cooling. Therefore, the study of such EMMs thermal state is relevant, as it will contribute to increasing the reliability and efficiency of their work. Goal. Formation of a ma

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Cherneta, Oleg, Vadim Kubich, Roman Voloshchuk, Alexander Sasov, Yuriy Korzhavin, and . "Conditions for the Formation of Wear-Resistant Structures When Strengthening the Surface Layers of Parts." International Journal of Engineering & Technology 7, no. 4.3 (2018): 76. http://dx.doi.org/10.14419/ijet.v7i4.3.19555.

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In the given article special attention is paid to the transformation of the structure of average carbon steels, depending on technological methods of strengthening, the identification of factors influencing the emergence of high-strength structures. With the help of microstructural, X - ray phase studies, microhardness measurements of certain layers, the main technological parameters and modes of reinforcing workings have been identified, new and innovative combined technologies have been proposed. Based on the analysis of a number of existing technological methods of strengthening the surface

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Sovetkanov, A., Ye Shayakhmetov, and R. Meirbekov. "REFINEMENT OF THE PARAMETRIC MODEL OF ROUGHNESS FORMATION BY CONDUCTING AN EXPERIMENT." Bulletin of Shakarim University. Technical Sciences, no. 1(13) (March 29, 2024): 62–72. http://dx.doi.org/10.53360/2788-7995-2024-1(13)-9.

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The article deals with the influence of lubricating and cooling technological medium and cutting temperature regime on the efficiency of the cutting process. The article presents the results of experimental studies, which showed that the use of optimal lubricant and cutting temperature control allows to increase the efficiency of the cutting process in the following directions:– Increase of tool durability. The application of coolant allows to reduce the temperature in the cutting zone, which leads to a decrease in tool wear.– Reduction of roughness of the machined surface. The use of coolants

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48

Eugeniy, Osadchuk, and Titlov Oleksandr. "ANALYSIS OF THE CLIMATIC FEATURES OF THE REGIONS OF THE PRIMARY APPLICATION OF THE SYSTEMS FOR PRODUCING WATER FROM THE ATMOSPHERIC AIR." ScienceRise, no. 4 (August 31, 2020): 3–9. https://doi.org/10.21303/2313-8416.2020.001390.

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<strong>The object</strong> of research is the thermal and humidity processes occurring during artificial cooling of atmospheric air to the dew point temperature in the evaporators of refrigeration machines of the compression and absorption type. <strong>This study solves the problem</strong> of finding energy efficient heat and humidity modes for cooling atmospheric air to the dew point temperature in regions with a shortage of water resources and high solar installations. It is shown that practically in all considered climatic zones with a shortage of water resources, the process o

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49

V., I. Milykh, Р. Shaida V., and Yu. Yurieva O. "Analysis of the thermal state of the electromagnetic mill inductor with oil cooling in stationary operation modes." Electrical Engineering & Electromechanics, no. 3 (April 23, 2023): 12–20. https://doi.org/10.20998/2074-272X.2023.3.02.

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<strong><em>Introduction.</em></strong><em> An electromagnetic mill (EMM) for the technological processing of various substances, which is based on the stator of a three-phase induction motor, is being studied. The stator winding has an increased current density, so the mill is provided with a system of forced cooling with transformer oil. <strong>Problem.</strong> Currently, there are no works on the thermal state calculation of the EMM with the given design and oil cooling. Therefore, the study of such EMMs thermal state is relevant, as it will contribute to increasing the rel

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50

Moiseev, V. I., A. V. Zhebanov, and T. A. Komarova. "Organization of transportation by tank cars of solidified petroleum fuels with transmission through field pipelines in low temperature conditions." Transport of the Urals, no. 2 (2021): 40–43. http://dx.doi.org/10.20291/1815-9400-2021-2-40-43.

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The method of unloading and reloading solidified oil fuels, with the use of pipelines made according to temporary technological schemes, produced in winter, is considered. Cooling of solidified fuels is accompanied by a sharp increase in their viscosity, which makes pipeline transmission impossible. In fire hazard, it is proposed to produce continuous heating of the pumped fuel using devices based on low-temperature combustion of propane-butane mixture on the surface of the catalyst carried out at fire-safe temperatures. It is also proposed to install a temporary heat-insulating shell on the p

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