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Submit scientific paper, scientific publications, International Research Journal | Meždunarodnyj naučno-issledovatel’skij žurnal

ENGINEERING

ISSN 2227-6017 (ONLINE), ISSN 2303-9868 (PRINT), DOI: 10.18454/IRJ.2227-6017
ПИ № ФС 77 - 51217, 16+

THE AMOUNT ESTIMATING OF RENEWABLE ENERGY SOURCES IN THE KHAKASS REPUBLIC

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The article describes calculation method adequacy of the territory in renewable electricity. We have mapped the distribution of solar and wind energy. We evaluated the potential installations areas of solar panels and wind turbines. Also in the paper we show screenshots of the program, which is capable of self-learning for the potential calculation.

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CALCULATION OF THE STRENGHT AND STIFFNESS OF THE EXHAUST HOOD OF STEAM TURBINE T-125/150-12.8 JSC “UTZ”

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The technique is considered on the strength and stiffness of the low pressure exhaust hoods of steam turbines. Shows the example of calculation with respect to the newly developed exhaust hood for cogeneration turbine T-125/150-12.8 “UTZ”. Using this technique allows to get a reliable design of the exhaust hood, with reducing its metal consumption and laboriousness.

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RECOVERY OF HYDROCARBONS FROM SATURATED SANDS

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The study of oil depleted reservoirs by alternating cyclical impact on reservoir system in the borehole bottom. When residual oil in an amount of 20% of the application of the proposed method w ill allow each 1000m3 oil saturated rocks to get the additional 100t more oil.

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NEW TRENDS IN ELECTRIC POWER EQUIPMENT TECHNICAL CONDITION MONITORING

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The article considers new trends in the monitoring of power equipment condition, contains information from the main reports, devoted to the diagnosis and assessment of transformers, discussed on the CIGRE Session. Finally it has conclusions about the most perspective trends in the development of the most effective transformers condition analysis methods.

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THE TOPICAL OF INFORMATION SYSTEMS IN RESIDENTIAL BUILDING

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The article describes the relevance of the development of home control system, and the basic principles and development tools, as well as the prospects and benefits of implementation.

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ABOUT TAXONOMY ALGORITHM TO THE PROBLEM OF TECHNICAL DIAGNOSTICS

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

We consider the problem of technical diagnostics. To solve the problem of diagnosis is advisable to use an algorithm for pattern recognition without teacher. To adjust the parameters of the algorithm is proposed to carry out pre-processing of data.

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RESEARCH INTO DEFORMATIONS IN DEVELOPMENT FACE CAUSEOL BY MINING-GEOLOGICAL AND MINING-TECHNICAL FACTORS

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

Results of the study of the impact of mining-geological and mining-technical factors upon the zone of non-elastic deformations around development face are shown. Dependences of the impact of the form of cross-section, depth of mining, kind of support, with of safety pillar on the zone of none-elastic deformation are evaluated.

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THE OPTIMAL RANGE OF THE HYDROGEN INDEX FOR EXTRACTION OF METALS FROM SEWAGE CATION EXCHANGE MEMBRANE

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

Due to ever-increasing amounts of pollution in the world today is particularly acute question of preventing release into the environment of pollutants. So today wastewater from heavy metals is particularly relevant. And in connection with this is an issue for the establishment of water treatment technologies, to optimize the process and to achieve a high quality of discharged water. The aim is to determine the optimal pH range for the extraction of heavy metals from wastewater.

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STUDY OF THE ADSORPTION CAPACITY OF IMPORTED AND DOMESTIC LUBRICANT OIL ON THE METAL SURFACE

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The article considered the study of the composition motor oil near the border with the metal surface in the conditions of use for a formalized description of anti-wear properties of liquid lubricants and the inclusion of appropriate mathematical models in the methodology of hydrodynamic calculations of friction units.

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POST-EVENT ANALYSIS OF METHODS OF DETERMINATION OF OPTIMUM PARAMETERS OF CRUSHING OF MATERIALS IN BEAD MILL

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

In this research article, based on the analysis of methods for determining the optimal parameters of crushing of materials in ball mills, were conditionally designated stages of development and realization of these methods. Were described the characteristics of each stage.

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UNIFIED COMPUTING ENVIRONMENT FOR LOCAL NETWORK AND TECHNIQUES OF DEVELOPING

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The article offers software platform for distributed calculations. The unified software platform unites all network nodes to unified computing environment and provides computing resources of the environment to users’ applications. The platform is used in local enterprise or campus networks. The platform solves the main problems of creation and use of distributed software. The unified computing environment provides efficient management of distributed calculations.

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PROMISING APPROACHES TO THE STUDY OF NONSTATIONARY AND NONLINEAR PHYSIOLOGICAL SIGNALS IN INTELLECTUAL ACTIVITY

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The article considers approaches to the creation of hardware and software for diagnostic video monitoring of human intellectual activity based on multifunctional diagnostic complex. Mathematical apparatus is presented for processing of non-stationary and nonlinear signals.

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THE ACTION OF ATMOSPHERE AND TEMPERATURE ON OIL SHALE

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

This research work is devoted to the problem of the use of natural resources. The raw materials base is a needed to finding new hydrocarbon sources. The purpose of this work is to make a physicochemical analysis of the oil-shales (their humidity, ash content, density, porosity) and to research its reaction on heat treatment (from 50°С to 950°). These measures are taken to outline how organic and mineral parts of the oil-shale can be used for the multipurpose utilization.

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MOTIVATION TOWARDS SAFETY

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The article considers the human factor as a key factor of safe work. The impact of individual needs and actions of the person, as a defining security from the danger and the predisposition to it is a very important factor.

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EFFECT OF HYDROGEN ON STEEL 09G2S AT ELEVATED TEMPERATURES AND PRESSURES

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The article presents the results of studies of the effect of hydrogen on steel 09G2S that allow to specify limits on the use of structural material in hydrogen environments.

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DEVICES FOR APPLYING MICRORELIEF USING THE SURFACE PLASTIC DEFORMATION TECHNOLOGY DEVELOPED IN RUSSIAN FEDERATION

Posted in 2014, ENGINEERING, Issue October 2014 | 0 comments

The article consideres devices for applying microrelief using the surface plastic deformation technology developed in Russian Federation.

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EVALUATING THE EFFICIENCY OF SUPERPLASTICIZER USAGE FOR OPERATING ABILITIES IMPROVEMENT OF EXPANDED-CLAY CONCRETE

Posted in 2020, ENGINEERING, Issue № 08(98) August 2020 | 0 comments

Expanded-clay concrete application domain for construction expands as the years pass. Therefore requirements not just to the materials but to the expanded-clay concrete manufacturing technologies increase. One of the ways to improve the operating abilities of expanded-clay concrete is the usage and large-scale implementation of various chemical additives – superplasticisers. The problem of choosing the best additive demands technical justification of its efficiency. To achieve that goal, research concerning the effect that various superplasticiser additives have on the change of expanded-clay concrete aggregates and expanded-clay concrete performance is conducted. The data obtained through the research is analysed. Analysis results enabled the evaluation of the effect that the studied additives – superplasticisers – had on the expanded-clay concrete performance. Based on the correlation analysis, dependence of the studied characteristics and the strength of relationship between them is discovered. Through the example of one of the additives, the regression model of expanded-clay concrete strength dependence on the amount of the additive is built. The usage of design quality index enabled the evaluation of expanded-clay concrete containing superplasticisers efficiency

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RESEARCH OF THE INFLUENCE OF THE ZENITH ANGLE OF AN INCLINED DIRECTIONAL WELL ON THE STRESS-DEFORMED STATE OF THE BIRD SPACE

Posted in 2020, ENGINEERING, Issue № 08(98) August 2020 | 0 comments

In this scientific study, the factors affecting the loss of stability of the wellbore during drilling were studied, and the influence of the zenith angle on the geomechanical processes in the rock mass was established. The authors of the study developed a method for choosing the optimal well trajectory, taking into account the acting stresses of rocks with an obliquely directed end of the wellbore. An algorithm has been developed for determining the optimal zenith angles on the basis of calculations of the Coulomb-Mohr theory of the stress state in unstable or weakly connected rocks, in order to increase stability, prevent landslides and accidents.

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EVALUATING THE INFLUENCE OF DOUBLY-FED MACHINES USED FOR REACTIVE POWER CONTROL ON THE SHORT-CIRCUIT PARAMETERS

Posted in 2020, ENGINEERING, Issue № 08(98) August 2020 | 0 comments

The purpose of this paper was to solve the existing problem of the lacking knowledge of the behaviour of doubly-fed electric machines in the transient state and abnormal mode, specifically evaluating the influence of doubly-fed electric machines used for reactive power control on the short-circuit parameters.

For the research, the design model of wind-driven power plant with the doubly-fed electric machine developed in the MATLAB-SIMULINK framework was used.

Through modelling we acquired the graph of bus bar voltage, active and reactive power of the doubly-fed electric machine, values of effective current, values of effective voltage across DC link, values of terminal current and voltage of doubly-fed electric machine on the short-circuit under various input/output reactive power.

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ESTIMATION OF THE SECOND JACOBIAN DERIVATIVES FOR A COMPLEX ELECTRIC POWER SYSTEM AND THEIR INFLUENCE ON STATIC STABILITY

Posted in 2020, ENGINEERING, Issue № 08(98) August 2020 | 0 comments

In this article, the authors study the estimation of the second derivatives of the determinant of the Jacobi matrix (Jacobian) of steady-state equations for a complex electric power system and analyze their influence on the aperiodic component of the static stability of power systems. An automated algorithm for calculating the Jacobian, as well as its first and second derivatives, has been created. The application of the algorithm is shown on the test scheme IEEE-14 for finding the limit mode for static aperiodic stability using the results of calculating the sequential weighting of all load nodes of the scheme.

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