Mathematical Modeling of Mechanical Forces and Power Balance in Electromechanical Energy Converter

Malozyomov, B.V.; Martyushev, Nikita V.; Sorokova, Svetlana N.; Efremenkov, Egor A.; Qi, Mengxu

doi:10.3390/math11102394

Cited by 30 publications

(26 citation statements)

References 22 publications

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“…Hot water and steam, otherwise coolants, are produced in high-pressure steam generators (boilers) and pumped into the formation through injection wells of a special design and with special equipment designed to operate at high temperatures [66]. The disadvantage of using surface steam generators is large losses of heat (temperature) in surface communications and in the wellbore.…”

Section: Displacement Of Oil From the Reservoir By Hot Water And Steammentioning

confidence: 99%

Overview of Methods for Enhanced Oil Recovery from Conventional and Unconventional Reservoirs

Malozyomov,

Martyushev,

Kukartsev

et al. 2023

Energies

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In world practice, the role of reproduction of raw material base of oil production by implementing modern methods of oil recovery enhancement (thermal, gas, chemical, microbiological) on the basis of innovative techniques and technologies is rapidly growing and is becoming more important. It is concluded that at present, the priority of increasing oil reserves in world oil production is the development and industrial introduction of modern integrated methods of enhanced oil recovery, which can provide a synergistic effect in the development of new and developed oil fields. This article presents a review and comparative analysis of theoretical and practical methods of improving oil recovery of conventional and unconventional reservoirs. The paper examines in detail methods of improving oil recovery, taking into account the factors of enhanced oil recovery of oil reservoirs. Considered the main methods and technologies currently used to develop oil fields and recommendations for their effective use, taking into account the variety of external factors of oil production: the geological structure of the reservoir, its volume, and properties of oils. It is shown that there is no universal method of oil reservoir development, and it must be chosen after a thorough feasibility study among several proposed models. When describing the methods of enhanced oil recovery, special attention is also paid to the physical processes that occur as a result of applying the technology. In conclusion, the positive and negative characteristics of the presented methods included in EOR are presented, and recommendations that may influence the choice of practical solutions for engineers and oil producers are given. Conclusions are made that development systems, placement and choice of operating mode of wells essentially depend on the geological structure of the reservoir, its volume and properties of oils. An important role in this is the construction of a geological model of the production facility. The used hydrodynamic models of development are based on physical laws, about which oil producers sometimes don’t even suspect, and the authors of the models are not always able to convey it to the real producers. The authors consider it reasonable to make a logical generalizing conclusion that understanding processes occurring in the reservoir and taking appropriate measures for optimization and intensification of oil production will allow making oil production as effective as possible.

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Section: Displacement Of Oil From the Reservoir By Hot Water And Steammentioning

confidence: 99%

Overview of Methods for Enhanced Oil Recovery from Conventional and Unconventional Reservoirs

Malozyomov,

Martyushev,

Kukartsev

et al. 2023

Energies

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“…Carbon materials are extremely promising at present. The main areas in which they can be used are electrodes for supercapacitors and applications in lithium-ion batteries [ 1 , 2 ].…”

Section: Introductionmentioning

confidence: 99%

“…The battery consists of a negative electrode and a positive electrode, usually lithium, separated by a lithium-ion conducting electrolyte, such as a solution of LiPF 6 in ethylene carbonate diethyl carbonate [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

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Improvement of Hybrid Electrode Material Synthesis for Energy Accumulators Based on Carbon Nanotubes and Porous Structures

et al. 2023

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Carbon materials are promising for use as electrodes for supercapacitors and lithium–ion batteries due to a number of properties, such as non-toxicity, high specific surface area, good electronic conductivity, chemical inertness, and a wide operating temperature range. Carbon-based electrodes, with their characteristic high specific power and good cyclic stability, can be used for a new generation of consumer electronics, biomedical devices and hybrid electric vehicles. However, most carbon materials, due to their low electrical conductivity and insufficient diffusion of electrolyte ions in complex micropores, have energy density limitations in these devices due to insufficient number of pores for electrolyte diffusion. This work focuses on the optimization of a hybrid material based on porous carbon and carbon nanotubes by mechanical mixing. The purpose of this work is to gain new knowledge about the effect of hybrid material composition on its specific capacitance. The material for the study is taken on the basis of porous carbon and carbon nanotubes. Electrodes made of this hybrid material were taken as an object of research. Porous carbon or nitrogen-containing porous carbon (combined with single-, double-, or multi-layer carbon nanotubes (single-layer carbon nanotubes, bilayer carbon nanotubes or multilayer carbon nanotubes) were used to create the hybrid material. The effect of catalytic chemical vapor deposition synthesis parameters, such as flow rate and methane-to-hydrogen ratio, as well as the type of catalytic system on the multilayer carbon nanotubes structure was investigated. Two types of catalysts based on Mo12O28 (μ2-OH)12{Co(H2O)3}4 were prepared for the synthesis of multilayer carbon nanotubes by precipitation and combustion. The resulting carbon materials were tested as electrodes for supercapacitors and lithium ion intercalation. Electrodes based on nitrogen-containing porous carbon/carbon nanotubes 95:5% were found to be the most efficient compared to nitrogen-doped porous carbon by 10%. Carbon nanotubes, bilayer carbon nanotubes and multilayer carbon nanotubes synthesized using the catalyst obtained by deposition were selected as additives for the hybrid material. The hybrid materials were obtained by mechanical mixing and dispersion in an aqueous solution followed by lyophilization to remove water. When optimizing the ratio of the hybrid material components, the most effective porous carbon:carbon nanotubes component ratio was determined.

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“…The geographical location of the weather station was chosen as the western region of Siberia (geographic latitude: 52.00; geographic longitude: 117.00). Siberia is promising for the development of renewable energy due to its location [17]. However, studies on the application of renewable energy sources in the territory of the region do not appear often, and the solar energy market in this area is virtually undeveloped.…”

Section: Introductionmentioning

confidence: 99%

Designing the Optimal Configuration of a Small Power System for Autonomous Power Supply of Weather Station Equipment

et al. 2023

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Autonomous power systems serving remote areas with weather stations with small settlements are characterized by a fairly high cost of generating electricity and the purchase and delivery of fuel. In addition, diesel power plants require regular maintenance, have a relatively short service life during continuous operation and produce a large amount of emissions into the environment. This article discusses various methods of placing solar panels in the space for the autonomous power supply of weather station equipment. The principles of these methods are described and their advantages and disadvantages are outlined. The optimal algorithms of functioning for photomodules are described and their comparison regarding the main, significant parameters is carried out. The choice of the most effective algorithm for use at a weather station is made. The effective positioning of solar panels is also calculated, and positioning conditions are determined depending on the territorial location and various environmental conditions. Simulation of the power supply system of a weather station consisting of solar panels, batteries and inverters is performed. As a result, a practical example of the application of the method of selecting the optimal composition of equipment for a hybrid power system of a weather station territorially located in Siberia with different configurations of equipment is considered. In numerical terms, it was possible to reduce the cost of power equipment operation by more than 60% with a fairly low payback period of 5.5 years and an increased reliability of the power system, which is very important for autonomous power systems of northern weather stations.

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Mathematical Modeling of Mechanical Forces and Power Balance in Electromechanical Energy Converter

Cited by 30 publications

References 22 publications

Overview of Methods for Enhanced Oil Recovery from Conventional and Unconventional Reservoirs

Overview of Methods for Enhanced Oil Recovery from Conventional and Unconventional Reservoirs

Improvement of Hybrid Electrode Material Synthesis for Energy Accumulators Based on Carbon Nanotubes and Porous Structures

Designing the Optimal Configuration of a Small Power System for Autonomous Power Supply of Weather Station Equipment

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