Bulbul OngarEnergy and Mechanical Engineering
Bulbul Ongar
PhD
Kazakh National Research Technical University named after K. I. Satpaev
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30
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Skills and Expertise
Publications
Publications (30)
The choice of a renewable energy production system, in each specific case, should be based on the calculations and measurements carried out. It is necessary to use theoretical and empirical methods for the preliminary calculation of the energy received. The purpose of this study was to demonstrate the operation of a solar collector in winter under...
The search for an effective solution to improve performance and emission characteristics of internal combustion (IC) engines used in the commercial sector is regarded as one of the most important and essential issues in recent years due to increasing levels of pollution. Nanoparticles with their additive ability to increase fuel reactivity and atom...
Currently, ANSYS Fluent software is widely used as an alternative engineering tool for describing the physical processes that occur in boiler furnaces and burners. Studies of the fuel preparation and combustion characteristics in the KVTK-100-150-4 boiler using the ANSYS Fluent program were performed. The characteristics of the combustion process i...
Potable water is crucial in today's society, which is resolving the freshwater issue. In this work, the progress of direction in a basin area inner heat transmission mode with a Double Effect Solar Distiller (DESD), which is approaching the temperature mechanisms (parameters) for the Laplacian method using builds coated basin areas with a TiO2/Jack...
: Failure Modes, Effects, and Criticality Analysis are widely used to assess the failure modes of a system, along with their causes and effects. Several Multi-Criteria Decision-Making approaches have been developed to overcome the limitations of the traditional FMECA. In these approaches, several multiple criteria are considered to determine the cr...
Combining the processes of ACT (Alternating current theory) and the generation of valuable CP with the production of electricity creates certain connections between energy and technology and their mutual influence on the parameters of the PTI (Power Technological Installations). Thermochemical and thermodynamic processes of energy conversion into P...
In the present work, a study on stepped basin solar still (SBSS) coated with energetic SiO2/TiO2 nanolayers is analyzed experimentally for its advanced and challenging properties for the proposed system. Different thermal conductivity (TC) potential by applying different coating ratios between 10% and 50% has been investigated and applied on the st...
Currently, ANSYS Fluent software is widely used as an alternative engineering tool for describing the physical processes occurring in the furnace and gas burners of the boiler. In the work, the technology of preparation and characteristics of fuel combustion of the boiler KVTK-100-150-4 of the Ekibastuz CHPP are investigated. Calculations of the en...
Even though natural sources of air pollution account for over 50 % of sulphur compounds, 93 % of nitrogen oxide which are the most dangerous artificial anthropogenic sources of air pollution and primarily associated with the combustion of fossil fuel. Coal-fired thermal power plants and industrial fuel-burning plants that emit large quantities of n...
This paper discusses some modes of signal transmission for corporate systems using the technology of virtual private networks VPN. A very important property of tunnels is the ability to differentiate different types of traffic and assign them the necessary service priorities. In this work, research has been carried out and comparative characteristi...
The article discusses the theoretical and practical foundations of the study of the possibility of obtaining volatile combustible substances released during special heat treatment of coal, with the aim of replacing ignition fuel oil at thermal power plants. The results of an experimental study of the coals of the Saryadyr field of three Kazakhstan...
The issues of combustion processes and the organization of the combustion workflow in diesel engines are relevant in view of the tightening of economic and environmental requirements for them. The problem of saving liquid fuels remains one of the most acute in the provision of fuel and energy resources. The development of highly efficient methods f...
The development of digital technology has spawned the concept of the Internet of Things (IoT). The concept basis is the machine-to-machine interaction (M2M) technology, which allows devices to exchange information. The most effective data transmission medium for M2M devices is mobile communications. Rapid growth of machine-to-machine М2М traffic in...
The state of the issue, the main provisions and the results of the computational and graphic comparative analysis of theoretical models of the processes of formation of air and fuel nitrogen oxides are briefly described. The scientific novelty of the work consists of the methodology and experimental results on the influence of pyrolysis and phase s...
In the experiment, the influence of the shift of the oxidant feed on the processes of formation of nitrogen oxides was studied. In order to do so, a vertical tubular furnace with electric heating was used. The flow of dust of Ekibastuz coal in all experiments was kept constant to 0.042 g/s, the grinding factor was 18% and the excess air ratio 1,2....
The object of research in this paper is the split phase of overhead power lines. The study of the aeroelastic instability of the icy conductors of the split phase for a multi-span system has already been explored using the method of determining the Hurwitz stability criterion. In multi-span systems, where conductors are interconnected through a gar...
The object of research is the area of generation of nitrogen oxides of a pulverized coal torch. Theoretical and experimental studies of the combustion process in the combustion chamber of the boiler were performed. Multiparametric calculations using numerical simulation methods make it possible to obtain results that are fully compatible with exper...
This article examines the heat generator impacton the drying regime of the grain and on the toxicity of the combustion products, with its operation modes, different variables and under different conditions. Timely and correct implementation of the procedure for drying grain is an extremely important aspect. We proposed several options for obtaining...
In the experiment, the influence of the shift of the oxidant feed on the processes of formation of nitrogen oxides was studied. In order to do so, a vertical tubular furnace with electric heating was used. The flow of dust of Ekibastuz coal in all experiments was kept constant to 0.042 g/s, the grinding factor was 18% and the excess air ratio 1.2....
The burning of all fossil fuels is accompanied by the production of large quantities of nitrogen oxides. Nitrogen oxide from coal combustion is formed from the molecular nitrogen in the air and the nitrogen contained in the fuel. In accordance with the mechanism of formation of nitric oxide from fuel, it is desirable to increase the concentration o...
In this article, installations and fire settings for the pyrolysis of coal dust and burning of pyrolysis products with a phase shift of the air supply have been developed and performed. Experiments on the determination of nitrogen oxides in inert and aerial environment have been carried out and the methodic of procedure has been described. The resu...
The article describes the main problems of traditional heat supply in the Republic of Kazakhstan, discusses possible solutions to this problem. Development of practical examples of the implementation of heat pump technology at specific sites of a heat supply leads to the improvement of technical and economic parameters of the heating system. The de...
The article presents the results of the impact assessment of the level of temperature and residence time in the combustion zone at the level of formation of thermal nitrogen oxides. The results obtained from the calculation of the thermodynamical equilibrial processes can be utilised in the conduction of ecologically clean burning processes.
The article presents the results of the impact assessment of the level of temperature and residence
time in the combustion zone at the level of formation of thermal nitrogen oxides. The results obtained
from the calculation of the thermodynamical equilibrial processes can be utilised in the conduction of
ecologically clean burning processes.
CO2 от горивния процес. Разработен е математичен модел, който достатъчна за практиката точност определя съотношението първичен (флуидизиращ) и вторичен (догарящ) въздух. Ключови думи: газифициращ кипящ слой; парогенератор An original scheme of steam generator with gasifying fluidized bed has been presented as a possible solution for reconstruction...
An original scheme of steam generator with gasifying fluidized bed has been presented as a possible solution for reconstruction of furnace with pulverized burning of coal. The method is effective when applied in combination with desulfurization for the purpose of reducing the CO2 emissions level. A mathematical model has been developed, which deter...