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Journal articles on the topic 'Liquid ring vacuum pump'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Ali Hikmet Akhmadov, Ali Hikmet Akhmadov, and Teymur Aghazadeh Teymur Aghazadeh. "POLYMER ADDITIVES IN THE COOLANT OF WATER-RING VACUUM PUMPS." ETM - Equipment, Technologies, Materials 11, no. 03 (2022): 39–44. http://dx.doi.org/10.36962/etm11032022-39.

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Practice shows that vacuum water ring pumps are widely used in industry. Such pumps are used in almost all areas of the oil industry, metallurgy, chemical industry, mechanical engineering, food industry, agriculture, pulp and paper industry, gas and many other areas. Taking into account all the above-mentioned areas of application, the question arises about increasing the service life and reliability of LCVs (liquid water ring pumps). This article provides a fundamental study of the theory of operation and performance of a liquid ring pump. Keywords: vacuum pump, theoretical model, coolant, fo

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2

Qiu, Guang Qi, Si Huang, Lan Lan Zhu, Yu Chen, and Jing He. "Performance Monitoring Analysis of Liquid Ring Vacuum Pumps." Applied Mechanics and Materials 853 (September 2016): 463–67. http://dx.doi.org/10.4028/www.scientific.net/amm.853.463.

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Liquid ring vacuum pump which uses rotating liquid as piston to abstract and compress gas is a kind of rotating positive displacement pump. Its running state implies some fault informantion. To capture performance levels of liquid ring vacuum pump, a comprehensive performance monitoring system includes data acquisition, data reprocessing, data storage, abnormal judgment and fault alarm, performance displaying is developed in this paper. Hence, the performance levels of liquid ring vacuum pump can be observed anytime by the monitoring system, the maintenance cost can be reduced, pumps can be op

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3

Nikitin, Dmitry, Yuri Rodionov, Grigory Rybin, Nikolai Voronin, Anastasia Skomorokhova, and Anna Sukhova. "CAVITATION DAMAGES IN LIQUID RING VACUUM PUMPS." SCIENCE IN THE CENTRAL RUSSIA, no. 4 (August 22, 2022): 131–39. http://dx.doi.org/10.35887/2305-2538-2022-4-131-139.

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The relevance of studying the parameters of operation of liquid ring vacuum pumps and the development of new designs is due to their demand in the agro-industrial complex. The paper provides a description of the cavitation phenomena that occur during the operation of a liquid ring vacuum pump. Cavitation degrades pump performance and can often cause failure. It can occur due to: low barometric pressure; large vacuum suction height; high temperature of the pumped liquid; additional pressure loss in the pump impeller. To identify the possibility of cavitation in a liquid ring vacuum pump, a cavi

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4

Nikitin, D. V., Yu V. Rodionov, M. A. S. Makhmud, A. I. Skomorokhova, A. N. Pakhomov, and A. S. Zorin. "Liquid Ring Vacuum Pumps for Heat and Mass Transfer Processes." Vestnik Tambovskogo gosudarstvennogo tehnicheskogo universiteta 27, no. 3 (2021): 428–41. http://dx.doi.org/10.17277/vestnik.2021.03.pp.428-441.

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The paper examines the calculation of a liquid ring vacuum pump, using the example of the drying process of various materials. It was found that for two-stage convective vacuum-impulse drying it is economically efficient to use a two-stage liquid ring vacuum pump with the ability to turn off the second stage. A method for calculating the specific power of one-stage and two-stage liquid ring vacuum pumps, taking into account heat and mass transfer and thermal processes that occur during operation is proposed.

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5

Nikitin, Dmitry, Pavel Galkin, Yuri Rodionov, Mikhail Abramov, Natalia Maistrenko, and Olga Glivenkova. "CALCULATION OF COMBINED DESIGN OF LIQUID RING VACUUM PUMP." SCIENCE IN THE CENTRAL RUSSIA, no. 5 (October 31, 2023): 64–77. http://dx.doi.org/10.35887/2305-2538-2023-5-64-77.

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Liquid ring vacuum pumps are widely used in many areas of the agro-industrial complex, in particular for milking processes, storage of plant materials, their drying and extraction, as well as pneumatic transport. It has been revealed that one of the main disadvantages of liquid ring vacuum pumps - low efficiency (25-50%) is often caused by hydraulic losses during rotation of the liquid ring on a stationary body, as well as inaccurate physical prerequisites in the equations describing the movement of the liquid ring - a two-phase turbulent flow in the working pump cavity. As a consequence, the

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6

Velikanov, N. L., V. A. Naumov, and S. I. Koryagin. "Pumping of Liquids Using Liquid-Ring Pumps." Proceedings of Higher Educational Institutions. Маchine Building, no. 08 (725) (August 2020): 51–59. http://dx.doi.org/10.18698/0536-1044-2020-8-51-59.

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The paper examines modelling of the pumping stages when using liquid-ring pumps, for example, in power plants and technological devices. It is important to determine the characteristics of various processes involved in liquid pumping using vacuum because the accuracy of predicting how objects move in such flows cannot be improved without solving the problems related to the calculation of hydraulic and power characteristics of the pumping unit in the network. Cubic spline functions were used as approximating functions when calculating the performance characteristics of a liquid-ring vacuum pump

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7

Rodionov, Yuri, Dmitry Nikitin, Grigory Rybin, Alexander Shchegolkov, Igor Elizarov, and Mikhail Blokhin. "LIQUID RING VACUUM PUMPS OF A COMBINED TYPE FOR ENERGY-EFFICIENT TECHNOLOGICAL PROCESSES FOR PROCESSING PLANT RAW MATERIALS." SCIENCE IN THE CENTRAL RUSSIA, no. 6 (December 27, 2023): 7–16. http://dx.doi.org/10.35887/2305-2538-2023-6-7-16.

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The use of one- and two-stage liquid ring vacuum pumps of a combined type for agricultural processes is justified: drying, extraction, vacuum evaporation and transportation of plant materials. The purpose of the article is formulated, which is to develop a method of theoretical calculation for the selection of liquid ring vacuum pumps of a combined type for the presented agricultural processes. Scientists who have been and are currently continuing research on this problem are presented. The general methodology for calculating the speed of action, adjusted for the flow rate and geometric parame

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8

Olšiak, Róbert, Zoltán Fuszko, and Zoltán Csuka. "Reduction of the suction pressure of a liquid ring vacuum pump with a supersonic gas ejector." MATEC Web of Conferences 168 (2018): 03002. http://dx.doi.org/10.1051/matecconf/201816803002.

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A supersonic gas ejector in conjunction with a liquid ring vacuum pump is used for creating and maintaining vacuum in a chamber for technological purposes. In this paper the authors submit an overview about the problematics of suction pressure reduction with a supersonic gas ejector used as a pre-stage of a liquid ring vacuum pump. This system has also the function of a cavitation protection due to the higher pressure present at the suction throat of the vacuum pump. A part of this paper is devoted to the governing equations used at the definition of the flow through an ejector. The experiment

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9

Olšiak, Róbert, Marek Mlkvik, František Ridzoň, and Pavol Slovák. "Two stage ejector as a pre-stage of the water ring vacuum pump." Mechanics & Industry 20, no. 7 (2019): 703. http://dx.doi.org/10.1051/meca/2019069.

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A supersonic gas ejector in conjunction with a liquid ring vacuum pump is used for creating and maintaining a vacuum in a chamber for technological purposes. In this paper, the authors submit an overview of the problematics of suction pressure reduction with a supersonic gas ejector used as a pre-stage of a liquid ring vacuum pump. This system has also the function of a cavitation protection due to the higher pressure present at the suction throat of the vacuum pump. A part of this paper is devoted to the governing equations used at the definition of the flow through an ejector. The CFD analys

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10

Zorin, Alexander, Yuri Rodionov, Dmitry Nikitin, and Anastasia Skomorokhova. "ADDITIVE TECHNOLOGIES FOR MANUFACTURING PARTS O." SCIENCE IN THE CENTRAL RUSSIA, no. 2 (April 29, 2022): 51–60. http://dx.doi.org/10.35887/2305-2538-2022-2-51-60.

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. The tasks of prototyping using 3D printing are relevant for the needs of the agro-industrial complex, where constant modernization of existing equipment and the development of new designs that increase productivity are required. The printing of structural elements of a liquid ring vacuum pump, which is used in the processing of agricultural raw materials, is considered. Prototypes of structural elements of a single-stage liquid ring vacuum pump were manufactured on a Flying bear ghost 5 3D printer (Fig. 1) using FDM technology.The most optimal set of printing parameters was determined by the

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11

Osipov, Eduard, Eduard Telyakov, Sergey Ponikarov, Daniel Bugembe, and Artem Ponikarov. "Mini-Refinery Vacuum Unit: Functional Analysis and Improvement of Vacuum Overhead System." Processes 9, no. 11 (2021): 1865. http://dx.doi.org/10.3390/pr9111865.

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The purpose of this study was to analyze the functioning of the vacuum distillation unit of a mini-refinery and to develop recommendations for improving the vacuum overhead system with the aim to reduce the cost of creating and maintaining a vacuum in the fuel oil separation column. A calculation model of the vacuum unit was developed in the Unisim Design R451 software package, which was identified by comparing the calculated data with the data from an industrial study for two operating modes of the installation. Replacing the existing steam-ejector pump with a liquid-ring vacuum pump was prop

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12

Velikanov, N. L., and V. A. Naumov. "Modeling of Characteristics of Water-Ring Vacuum Pumps." Proceedings of Higher Educational Institutions. Маchine Building, no. 10 (715) (October 2019): 70–77. http://dx.doi.org/10.18698/0536-1044-2019-10-70-77.

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Physical and mathematical modeling of characteristics of water-ring vacuum pumps has a number of specific features. Isothermal efficiency, i.e. the ratio of the isothermal gas compression power to the pump power consumed is used as an efficiency indicator. The article describes the existing methods of hydraulic calculation of pumping units. An analysis of physical models, numerical values of empirical coefficients is carried out. An improved algorithm for calculating water-ring vacuum pumps of different manufacturers in the framework of previously developed models is presented. The calculation

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13

Chumikov, Yu, Yu Rodionov, A. Skomorohova, M. Sokolov, O. Glivenkova, and A. Sukhova. "SELECTION OF LIQUID RING VACUUM PUMP FOR BALL MILL WITH VACUUM OUTLET." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 8, no. 12 (2023): 115–23. http://dx.doi.org/10.34031/2071-7318-2023-8-12-115-123.

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The use of powders is of interest in many industries. At the same time, the degree of grinding of materials depends on the intended purpose; in particular, in the production of paints, it is necessary to ensure a certain fineness of grinding of the pigment. The smaller the particles, the higher its hiding power. However, excessively high grinding fineness may reduce the hiding power of the pigment. It is proposed to grind the pigment in a two-section cylindrical-conical ball mill with vacuum removal of particles of a given degree of grinding. The article describes the design of the mill and sh

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14

P, Ravi Kumar. "Experimental Analysis of Liquid Ring Vacuum Pump Cavitation Reduction." International Journal for Research in Applied Science and Engineering Technology 7, no. 11 (2019): 723–26. http://dx.doi.org/10.22214/ijraset.2019.11119.

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15

Tan, Hongbo, Hao Wu, Qing Zhang, Gang Lei, and Qiang Chen. "Surrogate-Assisted Multi-Objective Optimization of a Liquid Oxygen Vacuum Subcooling System Based on Ejector and Liquid Ring Pump." Processes 10, no. 6 (2022): 1188. http://dx.doi.org/10.3390/pr10061188.

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As an important combustion aid for aerospace vehicles, subcooled liquid oxygen of high density can be used to increase loading capacity of a spacecraft. Providing a large amount of cryogenic propellant in a short time with a strict energy consumption limitation is a challenge in the design of the fuel filling system. The authors proposed a vacuumed subcooling system combined with an ejector and liquid ring pump to vacuum a liquid oxygen tank and obtain subcooled liquid oxygen. After the liquid oxygen tank is vacuumed to an intermediate pressure by the ejector, it is further vacuumed to 10 kPa

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16

Häre, Pierre. "Valveless Liquid-Ring Vacuum Pumps." Vakuum in Forschung und Praxis 19, S1 (2007): 24–27. http://dx.doi.org/10.1002/vipr.200790038.

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17

Priekulis, Juris, and Andris Belovs. "MILKING EQUIPMENT VACUUM PUMPS AND THEIR IMPACT ON ENVIRONMENT." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 20, 2001): 148. http://dx.doi.org/10.17770/etr2001vol1.1950.

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The aim of the research was to compare different milking equipment vacuum pumps purchased in Latvia according to their influence on the environment and profitability. Information on vacuum pumps available in Latvia is summarised and their classification is elaborated in the investigation. The amount of the working liquid discharged from the vacuum pumps during their operation is experimentally determined. It is stated that for the new lubricated vacuum pumps with oil recirculation system and the pumps with the oil screen the discharge of oil is reduced 60-199 times and it does not essentially

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18

Rodionov, Yu V., P. A. Galkin, D. V. Nikitin, and M. V. Sychev. "Design Features of Liquid Ring Vacuum Pump with Kinematic Link." Vestnik Tambovskogo gosudarstvennogo tehnicheskogo universiteta 22, no. 3 (2016): 463–70. http://dx.doi.org/10.17277/vestnik.2016.03.pp.463-470.

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19

Osipov, Eduard Vladislavovich, Daniel Bugembe, Sergey Ivanovich Ponikarov, and Artem Sergeevich Ponikarov. "Comprehensive Modeling of Vacuum Systems Using Process Simulation Software." ChemEngineering 8, no. 2 (2024): 31. http://dx.doi.org/10.3390/chemengineering8020031.

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Traditional vacuum system designs often rely on a 100% reserve, lacking precision for accurate petrochemical computations under vacuum. This study addresses this gap by proposing an innovative modeling methodology through the deconstruction of a typical vacuum-enabled process. Emphasizing non-prescriptive pressure assignment, the approach ensures optimal alignment within the vacuum system. Utilizing process simulation software, each component was systematically evaluated following a proposed algorithm. The methodology was applied to simulate vacuum-driven separation in phenol and acetone produ

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20

Родионов, Юрий Юрьевич, Анастасия Игоревна Скоморохова, Юрий Викторович Родионов, et al. "Prospects of using a liquid ring vacuum pump with automatic adjustable discharge window when grinding grape seeds and pomace." Magarach Vinogradstvo i Vinodelie, no. 1(115) (March 22, 2021): 55–60. http://dx.doi.org/10.35547/im.2021.50.40.009.

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Для повышения сохранения биологически активных веществ, уменьшения энергопотребления в процессе измельчения и получения порошка заданной степени помола из виноградных выжимок и семян предлагается использование установки двухступенчатой дисково-шаровой вакуумной мельницы. Предложенная конструкция двухступенчатой мельницы оказывает влияние на безопасность работы (исключаются взрывы) и экологичность (не создает запыленности окружающей среды). В конструкции разработанной установки важным объектом является вакуумный насос. Приведены устройство и основные принципы работы классического одноступенчато

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21

Osipov, E. V., D. Bugembe, and S. I. Ponikarov. "Experimental study of the characteristics of a liquid ring vacuum pump." Chemical Industry Today, no. 5 (2021): 56–63. http://dx.doi.org/10.53884/27132854_2021_5_56.

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22

Mahmood, Mohammed Ali Sami, Rodionov Yuriy Viktorovich, Nikitin Dmitriy Vyacheslavovich, Voronin Nikolai Vladimirovich, and Dmitriy Nikolayevich Protasov. "A Comprehensive Review of Liquid Ring Vacuum Pumps and Compressors for Improving Global Efficiency and Energy Saving." AIUB Journal of Science and Engineering (AJSE) 21, no. 1 (2022): 26–36. http://dx.doi.org/10.53799/ajse.v21i1.272.

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Liquid ring vacuum pumps and compressors are mechanical positive displacement turbomachines that can operate in the mode of both vacuum compressor and vacuum pump. They are widely used in the fields of filtration, cryogenic, reaction, gas injection, condensation, evaporation, and convective drying. Despite their low performance, they have many advantages such as low costs, simplicity, reliability, improve suction characteristics, and in many cases, can provide a more efficient option. Improving efficiency is the key to decrease energy consumption and costs. The article analyzed and evaluated t

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23

Serhii, Sharapov, Yevtushenko Sviatoslav, Panchenko Vitalii, Kozin Viktor, and Ivchenko Oleksandr. "Improving the efficiency of condensation installations of steam turbines by applying liquid-vapor ejector." Eastern-European Journal of Enterprise Technologies 4, no. 8 (118) (2022): 44–51. https://doi.org/10.15587/1729-4061.2022.263331.

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This paper considers the possibility of using liquid-vapor ejectors in condensing units of steam turbines. This unit is designed for pumping out a steam-air mixture from a steam turbine condenser, in which the process occurs at a pressure lower than atmospheric. In the traditional scheme, this is provided by a two-stage steam-jet ejector unit. The proposed scheme involves the use of a single-stage liquid-vapor ejector and its possible pre-vacuum mode of operation in conjunction with a liquid-ring vacuum pump. A working process of the liquid-vapor ejector does not require the supply of working

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Rodionov, Yu V., Yu T. Selivanov, D. V. Nikitin, M. V. Sychev, and P. V. Kombarova. "Novel Construction of Liquid Ring Vacuum Pumps." Chemical and Petroleum Engineering 55, no. 5-6 (2019): 473–79. http://dx.doi.org/10.1007/s10556-019-00648-z.

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25

Sharapov, Serhii, Sviatoslav Yevtushenko, Vitalii Panchenko, Viktor Kozin, and Oleksandr Ivchenko. "Improving the efficiency of condensation installations of steam turbines by applying liquid-vapor ejector." Eastern-European Journal of Enterprise Technologies 4, no. 8 (118) (2022): 44–51. http://dx.doi.org/10.15587/1729-4061.2022.263331.

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This paper considers the possibility of using liquid-vapor ejectors in condensing units of steam turbines. This unit is designed for pumping out a steam-air mixture from a steam turbine condenser, in which the process occurs at a pressure lower than atmospheric. In the traditional scheme, this is provided by a two-stage steam-jet ejector unit. The proposed scheme involves the use of a single-stage liquid-vapor ejector and its possible pre-vacuum mode of operation in conjunction with a liquid-ring vacuum pump. A working process of the liquid-vapor ejector does not require the supply of working

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26

Osipov, Eduard, Eduard Telyakov, and Sergey Ponikarov. "Coupled Simulation of a Vacuum Creation System and a Rectification Column Block." Processes 8, no. 11 (2020): 1333. http://dx.doi.org/10.3390/pr8111333.

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The purpose of this study was the coupling simulation of the vacuum block of the ethanolamine mixture separation unit to determine the optimal layout of the vacuum creation system. For this, a computational model of the vacuum unit, which was identified by comparing the computational data with the data of an industrial study of vacuum rectification columns, was synthesized in the Unisim Design R461 software package. To determine the required load on the vacuum system, a numerical experiment was carried out, during which it was discovered that the load on the system would be 9600 m3/h. It was p

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27

Zhang, Renhui, and Guangqiang Guo. "Experimental study on gas-liquid transient flow in liquid-ring vacuum pump and its hydraulic excitation." Vacuum 171 (January 2020): 109025. http://dx.doi.org/10.1016/j.vacuum.2019.109025.

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28

Nikitin, Dmitry, Yuriy Rodionov, Gregory Rybin, Nikolay Voronin, Pavel Galkin, and Oleg Ivanov. "ANALYSIS OF THE CALCULATION OF THE DRIVE OF THE COMBINED DESIGN OF A SINGLE-STAGE LIQUID RING VACUUM PUMP." SCIENCE IN THE CENTRAL RUSSIA, no. 2 (April 29, 2022): 60–69. http://dx.doi.org/10.35887/2305-2538-2022-2-60-69.

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The use of vacuum technologies and equipment in the processing of agricultural products can significantly reduce the loss of biologically active substances and functional components in the final product. Liquid ring vacuum pumps (LHVN) are considered in the work. A significant disadvantage of the LHVN is its low efficiency (about 50%), which is due to hydraulic losses due to friction of the liquid against the stationary pump casing and excessive power consumption for compressing the gas phase. A new design of a combined LHVN with a kinematic lock and an adjustable discharge window (LHVN KM) is

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29

Miladi, Rihab, Nader Frikha, and Slimane Gabsi. "Modeling and energy analysis of a solar thermal vacuum membrane distillation coupled with a liquid ring vacuum pump." Renewable Energy 164 (February 2021): 1395–407. http://dx.doi.org/10.1016/j.renene.2020.10.136.

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30

Guo, Guangqiang, Renhui Zhang, and Hao Yu. "Evaluation of different turbulence models on simulation of gas-liquid transient flow in a liquid-ring vacuum pump." Vacuum 180 (October 2020): 109586. http://dx.doi.org/10.1016/j.vacuum.2020.109586.

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31

Naumov, Vladimir Arkadievich, Nikolay Velikanov, and Oleg Sharkov. "GAS DYNAMICS OF VACUUM-PULSED DRYING FOOD PRODUCTS." Bulletin of KSAU, no. 7 (January 29, 2025): 191–99. https://doi.org/10.36718/1819-4036-2023-7-191-199.

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The purpose of the study is to form a mathematical model of gas-dynamic processes occurring during vacuum-impulse drying and analyze their dependence on the determining parameters. As an object of study, the operation of a water-ring vacuum pump of domestic production VVN1-1.5 is considered. The influence of leaks on the dependences of the pressure in the receiver and the mass flow rate of gas on time for a given volume of the receiver is studied. With an increase in the intensity of leakage (leaks) from 0.08 to 0.2, the pressure decreases from 20 to 9 kPa. This indicates a noticeable effect o

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32

Osipov, É. V., É. Sh Telyakov, R. M. Latyipov, and D. Bugembe. "Influence of Heat and Mass Exchange in a Liquid Ring Vacuum Pump on Its Working Characteristics." Journal of Engineering Physics and Thermophysics 92, no. 4 (2019): 1055–63. http://dx.doi.org/10.1007/s10891-019-02020-7.

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Rodionov, Yuri, Sergei Danilin, Grigory Rybin, Alexander Zorin, Olga Zorina, and Valery Talykov. "VACUUM DRYING OF PLANT MATERIALS." SCIENCE IN THE CENTRAL RUSSIA, no. 3 (June 28, 2024): 7–15. http://dx.doi.org/10.35887/2305-2538-2024-3-7-15.

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The main directions of using drying for the primary processing of plant materials at agricultural enterprises are analyzed, in particular for storing plant materials for long-term storage, production of ready-to-eat dried products or semi-finished products for processing in other industries, for use in therapeutic and prophylactic purposes. It has been revealed that at present the most promising system for dehydrating plant materials is convective-vacuum-pulse drying. The purpose of the article is to study and improve existing designs of plant raw material dryers. The main scientists involved

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34

Vemburaj, N. "Augmenting the Capacity of Air Evacuation System of Condensers in 210 MW LMW Turbines by Replacing Main Ejectors and Starting Ejectors by Liquid Ring Vacuum Pump and CFD Analysis of Sealing in the Liquid Ring Vacuum Pump." International Journal for Research in Applied Science and Engineering Technology 7, no. 3 (2019): 375–85. http://dx.doi.org/10.22214/ijraset.2019.3066.

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35

Kim, Seon-Hwa, Seon-Gi Lee, Young-Bin Moon, Young-Jin Roh, and Seok-Hwan Ahn. "An Experimental Study on the Vacuum Performance of a Liquid Ring Vacuum Pump according to the Concentration of Potassium Formate Solution." Journal of Power System Engineering 26, no. 4 (2022): 32–40. http://dx.doi.org/10.9726/kspse.2022.26.4.032.

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36

Grigorov, V. P., L. V. Sizov, and A. E. Sokolov. "Effect of the presence of a liquid in the outlet gas on the performance of a liquid-ring vacuum pump." Chemical and Petroleum Engineering 22, no. 4 (1986): 139–42. http://dx.doi.org/10.1007/bf01149241.

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37

Karaganov, L. T., and V. A. Laptev. "Determination of flow velocities in liquid-ring vacuum pumps and compressors." Chemical and Petroleum Engineering 21, no. 3 (1985): 135–40. http://dx.doi.org/10.1007/bf01154885.

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38

Rodionov, Yuri, Dmitry Nikitin, Olga Zorina, Vladimir Koltsov, Grigory Rybin, and Anastasia Skomorokhova. "VACUUM TECHNOLOGIES FOR THE PRODUCTION OF POWDERS AND EXTRACTS FROM VEGETABLES, FRUIT AND BERRIES FOR FUNCTIONAL FOOD." SCIENCE IN THE CENTRAL RUSSIA, no. 1 (February 28, 2023): 55–65. http://dx.doi.org/10.35887/2305-2538-2023-1-55-65.

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The development of technologies and equipment for obtaining food products with the addition of functional biologically active substances from vegetables, fruits, berries in the form of powders and extracts is promising. The technologies of vegetable processing of raw materials: cleaning, cutting, drying, grinding, extraction are analyzed. The scheme of the technological processing line for the production of plant powders and extracts is given, which provides for the use of production waste as animal feed. It was revealed that the finished product in the form of dried material (chips) can be ob

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39

Wei, Xiaoxiao, and Renhui Zhang. "The axial tip clearance leakage analysis of the winglet and composite blade tip for the liquid-ring vacuum pump." Vacuum 200 (June 2022): 111027. http://dx.doi.org/10.1016/j.vacuum.2022.111027.

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40

Zhang, Yifan, Fubao Zhou, Jinshi Li, Jianhong Kang, and Qiangqiang Zhang. "Application and research of new energy-efficiency technology for liquid ring vacuum pump based on turbulent drag reduction theory." Vacuum 172 (February 2020): 109076. http://dx.doi.org/10.1016/j.vacuum.2019.109076.

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Kumar, Abhishek, Mohammad Danish та Saurabh Jyoti Sarma. "Numerical analysis of coal bed methane (CBM) degassing in liquid ring vacuum pump using RNG k−ε turbulence model". Vacuum 233 (березень 2025): 114034. https://doi.org/10.1016/j.vacuum.2025.114034.

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Zhang, Yifan, Jinshi Li, Jianhong Kang, and Fubao Zhou. "Experimental study on the flow and heat transfer behavior of polymer solutions in the closed liquid ring vacuum pump system." Applied Thermal Engineering 199 (November 2021): 117525. http://dx.doi.org/10.1016/j.applthermaleng.2021.117525.

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Li, Chunxiao, Guoyong Zhao, Yugang Zhao, Wenze Fu, and Zhifu Zheng. "Research on hydraulic loss of liquid ring vacuum pump and optimization of shell profile for high efficiency and energy saving." Vacuum 207 (January 2023): 111633. http://dx.doi.org/10.1016/j.vacuum.2022.111633.

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Kossar, M. J., K. J. Amaral, S. S. Martinelli, and M. C. L. Erbe. "Proposal for water reuse in the Kraft pulp and paper industry." Water Practice and Technology 8, no. 3-4 (2013): 359–74. http://dx.doi.org/10.2166/wpt.2013.036.

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The reuse of wastewater by the pulp and paper industry reduces environmental impacts by contributing to raw water conservation, thereby making a greater volume of fresh water available for nobler purposes, and reducing wastewater treatment. This study evaluated a proposed system of water reuse at a Kraft pulp and paper plant in Brazil, based on a survey of water quality required by its consumption points, supplied by its water treatment plant. Results after ultrafiltration included: turbidity of 0,3 NTU and pH 7,5, average values of BOD 66,4 mg/L, COD 9,6 mg/L and the colour of 280,5 ppm Pt we

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Titorenko, Elena, Evgeniya Ermolaeva, Pavel Ivanov, and Yuliya Ustinova. "Designing the technology and composition of plant extracts using reduced atmospheric pressure." Nexo Revista Científica 36, no. 02 (2023): 139–47. http://dx.doi.org/10.5377/nexo.v36i02.16021.

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The study aims to establish the regimes and parameters of extraction of bioactive substances from raw plant materials by means of extraction with reduced atmospheric pressure for the purpose of manufacturing non-alcoholic functional syrups. The work is performed by leading specialists of the Kemerovo State University using conventional methods. Preparation of the extracts involves aqueous alcoholic treatment of the crushed mass of raw plant materials selected according to the functional parameters. Extraction is performed in a Soxhlet extractor with an advanced liquid ring vacuum pump. The ext

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Silva, Danilo Augusto Oliveira da, Denis Nascimento, Viviane Tabchouryde Barros Vieira, Luiz Augusto da Silva, Claudete Oliveira Kenvyn, and José Rubens de Camargo. "APLICAÇÃO DA TÉCNICA DE INSPEÇÃO BOROSCÓPICA EM BOMBA DE VÁCUO DE ANEL LÍQUIDO / APPLICATION OF THE BOROSCOPE INSPECTION TECHNIQUE IN LIQUID RING VACUUM PUMP." Brazilian Journal of Development 7, no. 3 (2021): 29717–25. http://dx.doi.org/10.34117/bjdv7n3-610.

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Calderoni, Gilberto, and Vincenzo Petrone. "Department of Earth Sciences at the University of Rome Radiocarbon Dates I." Radiocarbon 34, no. 1 (1992): 105–13. http://dx.doi.org/10.1017/s0033822200013448.

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We report here, in part, dates measured on samples from Italy since the construction of a new 14C lab in 1990 for research in the fields of geology, paleomorphology and the biogeochemical cycle of carbon. We use liquid scintillation counting (LSC), following sample conversion to benzene through the four classical chemical steps: 1) combustion or hydrolysis to CO2; 2) production of Li2C2; 3) hydrolysis to C2H2; 4) trimerization of acetylene to C6H6 with specific catalysts. The vacuum line for benzene synthesis has been designed following a comparative review of the literature (Tamers 1960; Noak

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Revki, Romadhon, and Sinaga Nazaruddin. "Study of Liquid Ring Vacuum Pump's Capacity to Reduce Motive Steam Consumption of Gas Removal System in Indonesia's Geothermal Power Plant 117 MW." International Journal of Innovative Science and Research Technology 8, no. 4 (2023): 1191–200. https://doi.org/10.5281/zenodo.7889059.

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Gas Removal System (GRS) is vital in geothermal power plants since steam flows into the turbine and the condenser still has a certain amount of Non-Condensable Gas (NCG). The effect of the NCG will increase the pressure in the condenser so that it will affect the power generation performance of the Geothermal Power Plant (GPP). The types of equipment used in GRS are steam jet ejectors dan Liquid Ring Vacuum Pumps (LRVP). The existing configuration of GRS in this GPP uses a hybrid system for Train A and Train B, which consists of 2 stages for steam ejector and 1 stage for LRVP. This study aims

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Voronin, Nikolay, Anastasia Skomorokhova, Ivan Filatov, Yuri Rodionov, and Dmitry Nikitin. "METALIZATION HARDENING OF POLYMER PARTS OF MACHINES AND MECHANISMS OF APC PRODUCED BY ADDITIVE TECHNOLOGIES." SCIENCE IN THE CENTRAL RUSSIA, no. 2 (April 29, 2022): 125–34. http://dx.doi.org/10.35887/2305-2538-2022-2-125-134.

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The active introduction of additive technologies in many industries, including agriculture, determines the relevance of studying the properties of materials used in printing and the characteristics of the resulting products. Polymeric materials are widely used in 3D printing, which can be used to create new composites with the required parameters. One of the approaches to significantly improve the properties of parts made of polymers obtained using 3D printing is their metallization. The article proposes a technology for surface hardening of parts made of thermoplastic polymer materials. This

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Zhang, Xiao Li, and Feng Lan Wang. "The Fault Mechanism of Water Ring Vacuum Pump Shaft Broken." Applied Mechanics and Materials 620 (August 2014): 219–22. http://dx.doi.org/10.4028/www.scientific.net/amm.620.219.

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This paper introduces the broken shaft failure problem of vacuum pump often encountered, and through the failure mechanism analysis of broken shaft in several aspects, the paper not only summarizes the cause of broken shaft vacuum pump, which is found in five main aspects of broken shaft vacuum p

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