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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+

NORMAL AND EMERGENCY MODES OF 110 KV CABLE LINES WITH POLYETHYLENE INSULATION

Posted in 2019, ENGINEERING, Issue № 8(86) August 2019 | 0 comments

The calculations of the induced currents in the shields were conducted with their two-sided grounding in normal mode based on the developed mathematical model of a three-phase cable line (cables with polyethylene insulation – SPE). The authors considered emergency operating modes of the CL, the characteristics of the emergency current spreading on the CL screens. The authors studied the influence of the CL phases laying and the cross section of the core on the ratio of losses in the cores and screens in normal and emergency modes with two-sided grounding of the screens. The research results can be used in the design of cable lines 110-220 kV and higher.

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RECONSTRUCTION OF THE BKZ-220-110 STEAM GENERATOR OF ZHEZKAZ-GANSK CHPP OF “KAZAKHMYS ENERGY” LLP

Posted in 2019, ENGINEERING, Issue № 8(86) August 2019 | 0 comments

The article discusses the possibility of reconstructing BKZ-220-110 steam generator of the Zhezkazgan CHPP, where serious problems arose in ensuring the temperature regime of the third and fourth stages of the superheater after dismantling the screen superheater, as well as part of the first stage of the convective superheater. To solve the problems, reconstruction is proposed aimed at increasing steam production up to 240 t/h with Borlin coal as fuel raising the reliability of the boiler and reducing NOx emissions to less than 470 mg/nm3 where α = 1.4.

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APPLICATION OF BIOINSPIRED METHODS FOR THE TASKS OF MULTI-CRITERIA OPTIMIZATION

Posted in 2019, ENGINEERING, Issue № 8(86) August 2019 | 0 comments

The article presents general approach to the use of bio-inspired methods for problems of multi-criteria optimization with the aim of supporting the decision-maker when searching for Pareto-optimal solutions in accordance with the preferences. An approach involving the determination of the “fitness function” of individual solutions for approximating the Pareto set is proposed keeping the diversity of the Pareto set of solutions, while preserving and using elite solutions. Combining bio-heuristics with methods of mathematical programming, machine learning and data mining, solutions are obtained for multi-criteria problems in such areas as engineering design and bioinformatics, economics and finance, logistics, transport and telecommunications. Grammar for promising hybridization schemes is proposed, as well as bio-heuristic hybridization options with machine learning and data mining methods.

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ASSEMBLY AND INSTALLATION OF SHIP SUB UNITS USING SINGLE ASSEMBLY METHOD BASED ON MATHEMATIC MODELING

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

Proposed here is experimental method for modeling of technological procedures used with dependencies between defining factors.

Reviewed are technologies for assembly of ship sub-units (SSU) using single assembly method, i.e. single exposure at pulling mechanisms and dynamometers.

These technologies help to decrease labor intensity and duration of assembly and installation works, early detection and removal of assembly errors, collisions, etc.

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STREAM CHARACTERISTICS IN THE AIRLIFT FISH HOIST

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

The dependences are received, allowing to define necessary quantity of air and pressure for achievement of the set productivity airlift, applied in fish protection the device at its known geometrical sizes.

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OPTIMIZATION OF NEUTRON-PHYSICAL CHARACTERISTICS OF «DRY» STORAGE SYSTEMS OF SPENT NUCLEAR FUEL OF URANIUM-GRAPHITE PRESSURE TUBE REACTORS

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

Computational studies of the neutron-physical characteristics of the systems of «dry» storage of spent nuclear fuel of the uranium-graphite reactors have been carried out. A range of practical recommendations for the optimization of the parameters of the systems and schemes of handling and placement of spent fuel in a «dry» storage have been developed.

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THE VERSION OF FIELD CAMP BUILDING ON COAST OF OFFSHORE ZONE OF ARCTIC

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

The article consideres a version of application industrial sets of construction components with plywood I-beam frame for field camp building in arctic climatic conditions.

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STATISTICAL ANALYSIS NORMALIZATION IRRIGATION FOR ALFALFA THE SARATOV ZAVOLZHIE

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

The article discusses and solves the problem of rationing crop irrigation in a constantly changing climatic conditions on the basis of valuation models developed irrigation.

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MODEL OF DYNAMICS OF TECHNOLOGICAL INNOVATIONS

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

Verification and validation of model of distribution of technological innovations is executed. Model parameters are identified. The model error in relation to services of branch of communication of Russia is estimated.

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THE COMPUTER PROGRAM QUALITY ASSESSMENT OF FUNCTIONAL INTEGRATION SUBCIRCUITS

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

The article describes the software implementation option mechanism to assess the quality of integration of functional subcircuits complex functional blocks. Provides software package MatLab, allows calculations coefficient integrate functional subcircuits.

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HIGH-COMPOSITE MATERIALS BUILDING DESIGN BASED ON ALUMINIUM

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

Obtain materials which harden like precipitation hardening alloys dispersed particles, they are fundamentally different from the nature of the particles do not dissolve in a metal matrix which has improved mechanical properties at high temperatures. It has been established that the ultimate strength of the composite increases with increasing compaction pressure and the sintering temperature of the powder mixture.

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FORECASTING OF INDICATORS OF WORK OF HYDROTRANSPORT SYSTEMS

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

Improvement of the analysis of operation of hydrotransport systems on the basis of data of the statistical reporting allows with set reliability to estimate indicators of work of systems.

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PROBABILISTIC ESTIMATION Of EMERGENCE AND HEREDITY IN THE FORMATION Of THE CHILD’S BLOOD GROUP SYSTEM AV0

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

The aim of this paper is to quantify the emergence and heredity (continuity), in the formation of the child’s blood group. As the source is blood group heredity table known from a child, depending on the combination of blood groups of parents showing the probability of receiving them. Found probabilistic estimation of conditional and the full emergence and heredity (continuity), taking into account different frequency combinations of blood groups from his parents.

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NEW TECHNOLOGICAL FACILITIES FOR FLISHING OF SHIP-BORNE WATER SYSTEMS AND EQUIPMENT

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

Present article reviews development of new technological facilities for hydrodynamic flushing of ship-borne water systems and equipment; this procedure is one of stages of construction and installation on shipyards.

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EFFECT OF DYNAMIC MACHINE-TOOL FEATURES FOR QUALITY OF MACHINING SURFACE

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

This research scientific work examines the opportunity of receiving high roughness values (Ra 0, 20) by cutting tapered surface of one of the detail with a help of edge tool. The detail has a number of specific features: the tapered surface is located in the inner chamber, radial runout tolerance is 0,03mm, small size (11х18 мм), and complexity of cutting tool approaching. Formerly, high roughness values of inner tapered surface of a detail were achieved by bench finishing (grinding) after the lathe machining. This way is quite laborious and it gives a large amount of throw-out. The object of research is fluctuations and vibration of the machine tool.

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FEMENTED MILK OF MIXED TERMENTATION

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

The technology of sour-milk Tar drink with use of consortium of microorganisms of kefir ferment and bifibakteria and an acidophilus stick is developed. Sour-milk Tar drink possesses high consumer and pro-biotic properties.

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APPLYING OF ALUMINIUM AND MOLYBDENUM EQUIVALENTS IN EVALUATION OF POLIMORFIC TRANSFORMATION TEMPERATURE OF TITANIUM ALLOYS INGOTS

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

It is shown that the dependence of α+β/β-transition temperature of commercial titanium alloys on their chemical compositions may be described by linear regression equations. The deviation of the calculated transition temperatures from actual ones are on average 100С.

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THE PROBLEMS OF IMPROVE THE OPERATIONAL RELIABILITY OF BUILDINGS, BASED ON THE SUBSIDING SOILS

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

The article presents the results of a investigation of buildings, based on the subsiding soils. Analyzed the influence of the design features of the building on its deformation when foundation soils are moistened. Аs an example, considered the hostel of Saratov State Medical University. There are proposed technical solutions to improve the reliability and durability of the building, based on the subsiding soils.

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CFD-MODELING OF FLOW NEAR-BY THE SURFACE OF TUBES OF THE COMFORTABLE-SHAPED FORM WITH INCOMPLETE FINING

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

In the article possibility of decline of hydrodynamic resistance of sections of heat-exchange vehicles is examined by application of new types of the developed convectiv surfaces of heating trivial-oval tubes with incomplete transversal fining developed in NTUU «KPI».

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ENGINEERING AND TECHNICAL SUPPORT – A NEW WAY OF CONTROL DURING CONSTRUCTION AND ELIMINATION OF WELLS IN THE ASTRAKHAN GAS CONDESATE FIELD

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

Field supervision is an important tool in the process of project management. But in the Astrakhan gas condensate field the best method of control of construction and abandonment became engineering and technical support. This article describes the features and benefits of this method.

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