Contents
HEAT-AND-POWER ENGINEERING FUNDAMENTALS
RESEARCHES OF THE PHENOMENA OF HEAT EXCHANGE AND HYDRODYNAMICS ON THE INITIAL THERMAL SITE IN THE ROUND PIPE
J.G.Nazmeev, G.R.Halitova
evachagina@mail.ru
Research centre of problems of power of KazNtS of the Russian Academy of Sciences
Keywords: the theory of thermal explosion, a structurally-viscous liquid, flashpoints, a high-temperature branch
The summary
In work researches of critical modes of a current of the generalised, structurally-viscous, incompressible, is reactionary-capable liquid in a round pipe taking into account an initial site are conducted at joint action chemical and диссипативного thermal emission sources. Changes of critical length of a pipe from intensity of heat exchange with environment, and also reorganisations of profiles of a temperature field and longitudinal components of speed are considered.
NUMERICAL RESEARCH OF PROCESSES OF HYDRODYNAMICS AT LAMINAR CURRENT OF THE FLAT FLOODED FREE JET OF THE VISCOUS LIQUID
E.V. Shamsutdinov, R.F. Kamalov
eshamsutd.kazan@mail.ru, rustemran@mail.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Abstract
In work statement of a hydrodynamical problem is resulted at laminar current of the flat flooded free jet of a viscous liquid in the dimensionless form. Hydrodynamical boundary conditions are resulted. At the decision of a task in view the method of final elements and method of Faedo-Galerkin was used. As a result of numerical researches distributions of lines of a current, a vector of speed and a component of a vector of speed are received at the expiration of the flat flooded free jet of a viscous liquid from a slot-hole nozzle for the various moments of time.
Keywords: Hydrodynamics of the laminar stream, the flooded jet, numerical researches, lines of a current, speed
EXISTENTIAL INTERRELATION OF PRESSURE AND SPEED OF THE STREAM IN THE PIPE IN THE CONDITIONS OF IMPOSED PERIODIC
N.I.Miheev *, V.M.Molochnikov *, G.V.Stinsky *, L.A.Feoktistova **
n.miheev@mail.ru , vmolochnikov@mail.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
A.N.Tupolev’s Kazan state technical university
Keywords: pressure, speed, pulsations, existential structure, correlation functions, phase shift.
The summary
Results of experimental researches of interrelation of pulsations of pressure and speed of a stream in section of a round pipe are presented at turbulent flow with the imposed periodic pulsations of the expense. Laws of existential interrelation of pressure and speed of a stream are revealed. Phase shifts between these parametres are found out. The physical mechanisms explaining received laws, and areas of prevailing action of this or that mechanism are established.
Occurrence of progressive increase of temperature on the initial thermal site of the round pipe at the sine Law change of factor HEAT EMISSION
A.I.Kadyyrov
aidarik@rambler.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
It is investigated heat transfer at laminar axisymmetric current of a pseudo-plastic incompressible is reactionary-capable liquid on an initial thermal site of a round pipe with a prevailing chemical source of a thermal emission. As thermal boundary conditions boundary conditions of the third sort where the factor heat transfer varies under the sine wave law on length of a pipe are considered. During carrying out of a complex of numerical researches it is received, that the harmonious behaviour of factor heat transfer is answered with oscillatory change thermal, hydrodynamical and rheological characteristics of a working environment. It is revealed, that at some combination of managing directors of parameter d which is responsible for a thermal emission from a chemical source, and b, describing energy activation of chemical reaction the sharp gradient of temperature, thermal explosion is observed.
Keywords: initial thermal region, heat transfer, sine low, chemical reaction
CRITICAL THERMAL MODES OF LAMINAR FLOW OF VISCID LIQUID IN THE ROUND PIPE AT THE LINEAR HEATING OF WALL
D.V. Ananev
Dima211083@yandex.ru
Research center fоr Power Engineering Problems Kazan Scientific Center Russian Academy of Sciences
Abstract
In work the critical thermal modes of laminar flow of viscid liquid are explored in the round pipe at the linear heating of wall in the conditions of unstationary. The explored critical modes consist in the progressive growth of temperature in the case of insignificant change of one or a few handling parameters. As scope terms on the wall of pipe the hydrodynamic and thermal scope terms of the first family are accepted. The critical values of intensity of thermal emission are determined from the dissipative source of warmth from the chemical reaction and speed of linear change of temperature of wall of pipe.
Keywords: Heat exchange, unstationary, laminarnoe flow, critical mode, unnewtonian liquid.
RESEARCH OF TEMPERATURE, SPEED AND VISCOSITY AT CURRENT OF THE STRUCTURALLY-VISCOUS LIQUID IN THE INFINITE COAXIAL CHANNEL
B.R.Abajdullin
cyberincorp@mail.ru
The research center of problems of power in the Russian Academy of Science
Abstract
In the given work is the search and the description of critical modes of current of a pseudo-plastic liquid in the infinite coaxial channel spent. In the equations of modelling system are on border boundary conditions of the first sort set. Besides a classical problem of thermal explosion is the problem of hydrodynamical thermal explosion considered. Except for the parameters considered in a classical problem defining a mode of heat exchange at current of a liquid in the channel, are also influence and other not less important basic defining parameters considered.
Keywords: a structurally-viscous liquid, dissipative source of a thermal emission, intervals of ambiguity, critical modes, energy of activation of chemical reaction.
NUMERICAL RESEARCH OF THE HEAT EXCHANGE ON INITIAL SITE DRAW PLATE EXTRUDERS UNDER THERMAL BOUNDARY CONDITIONS OF THE FIRST SORT
A.V.Shljannikov
a.shlyannikov@gmail.com
Research center of problems of power in the Russian Academy of Science
Abstract
In the given work are the modes of current and pseudo-plastic incompressible, reactionary-capable liquid on an initial site draw plate extruders investigated. There is the influence of parameters on process of increase of temperature up to critical values defined. Here also there are the dependences of a warming up of a mix depending on temperature conditions on walls of the channel, and also depending on parities between height and width of cross-section section considered. For the decision of system of the nonlinear equations is the method of splitting and a method of variable directions used.
Keywords: Draw plate extruders, prismatic the channel, reaction of the zero order, dissipative source, critical modes, the infinite channel.
MATHEMATICAL MODEL OF PLASMA IN LIQUIDS
R.B.Shaihov
kravtsov@mail.knc.ru
The research centre of problems of power of KazNtS of the Russian Academy of Sciences
Keywords: plasma, the electric category, a productive layer, oil, bitumens, ions, hydrodynamic indignation.
Abstract
In work the mathematical model of process of formation низкотемпературной plasmas is presented. It is shown that use низкотемпературной plasmas allows to raise efficiency of process of an oil recovery at the expense of hydrodynamic and electric influence on a layer. It is revealed that plasma is formed at influence on пластовую a liquid by the high-voltage electric category. In the offered model of process the variant when all installation takes places on a chink mouth, and an electrode part on a face is considered. The model can be used at designing of the installations intended for processing of oil and bitumen chinks.
THE DECISION OF PROBLEM heat transmission IN FREE FLOODED jet AT LINEAR CHANGE OF TEMPERATURE OF THE VISCOUS LIQUID ON THE OUTPUT FROM THE NOZZLE
E.V. Shamsutdinov, R.F. Kamalov
eshamsutd.kazan@mail.rue, rustemran@mail.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Abstract
In work the decision of a problem non-stationary heat transmission is presented at laminar current of the flat flooded free jets of a viscous liquid for the linear law of change of temperature on an output from a nozzle. At statement of a problem a number of assumptions is accepted and dimensionless sizes are entered. Hydrodynamical and thermal boundary conditions are resulted. At the decision of a task in view the method of final elements and method of Faedo-Galerkin was used. As a result of numerical researches distributions of fields of temperature and a component of a vector of speed are received at linear change of temperature of black oil on an output from a nozzle for the various moments of time.
Keywords: Non-stationary heat transmission, the laminar current, the flooded jet, numerical researches, temperature, speed.
INDUSTRIAL HEAT-AND-POWER ENGINEERING
NUMERICAL RESEARCH OF CIRCULATING SEPARATE HEATING OF BLACK OIL IN THE TANK BY MEANS OF TWO CONSISTENTLY CONNECTED HEATERS
A.M.Muhametzakirov
amm@gmail.com
Research centre of problems of power of KazNtS of the Russian Academy of Sciences
Keywords: power system, modelling, circulating heating, tanks, heaters
Abstract
On developed before mathematical model of process of circulating heating of black oil in the tank by means of two consistently connected heaters. Numerical researches are spent for a case of circulating separate heating of black oil in the tank in volume of 5000 cubic m by means of heaters PM-10-60 and PM-40-30. Various operating modes of the scheme are considered: in the presence of a stream of black oil from a heater exit on its input, both for winter, and for the summer period of storage. Three-dimensional dependences of temperature of black oil on time and on black oil reference temperature in the tank are presented. Researches have shown that at the separate scheme of heating a temperature gradient at various expenses of black oil through heaters in a heating initial stage considerably above in comparison with other interval of time. It testifies that the most intensive heating of black oil occurs in time initial stage.
FILM CURRENT OF THE LIQUID IN BATCH NOZZLES OF INSTALLATIONS VAPORIZING OF COOLING
A.S. Mihalkin, N.A. Nikolaev
andr_nik_nik@rambler.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Abstract
For stabilization of film current it is offered to use a regular large-scale roughness as cross or inclined ledges of the various form. The organization of a regular large-scale roughness on an internal wall cylindrical or hexahedral channels of batch nozzles allows to exclude completely formation of jet current of a liquid and to stabilize film current, both on perimeter, and on all length of the channel. Dependences of average thickness of a film of water on a ratio of distance between ledges to their height are received.
Keywords: Roughness, gas-liquid stream, film current, vaporizing cooling
CHOICE OF OPTIMUM SYSTEM OF CO-ORDINATES, TAKING INTO ACCOUNT SPATIAL SYMMETRY AT DESIGN OF MOTION OF ZOLOSHLAK PULP IN SPIRAL CHANNELS
С.А. Livshits, E.V. Shamsutdinov
eshamsutd.kazan@mail.ru
Research center fоr Power Engineering Problems Kazan Scientific Center Russian Academy of Sciences
Abstract
The researches, allowing to compare two developed before approach of mathematical design of motion of zoloshlak mixture through the spiral conveyers which were before considered in the spiral channels with different geometrical forms of casing, are conducted. An object of research is been by the spiral conveyer, the screw of which is revolved with the permanent angular speed and joins without gap to casing. The spiral system of co-ordinates and vector of whirlwind is entered. As a concrete reological model the semi empiric equalization, describing effective viscidity of continuous thread of dispersion material as a function of terms of deformation, physics-mechanical and geometrical descriptions of material, is used.
Keywords: spiral conveyer, effective viscidity, vector of whirlwind, pulp, mathematical design.
ANALYSIS STRUCTURE AND DEFINITION OF THERMODYNAMIC EFFICIENCY ENERGY OF USE STAGES ALKILINE BENZENE IN MANUFACTURE IZOPROPILBENZENE
O.G.Rogogkina
marfin@mail.knc.ru
Research Center of Power Engineering Problems of Kazan Science Center
the Russian Academy of Sciences
Abstract
In work results the analysis of structure warmly technological scheme of a stage alkiline benzene olefine in manufacture izopropilbenzene are presented. During research the information block diagram is made, is identified 35 contours formed by elements of the scheme. The minimum quantity of streams which conditional break will allow to calculate all warmly technological scheme of the given stage is certain. It is lead thermal and thermodynamic analyses of the block of catching of benzene from abgaze stages alkilene benzene olefine.
Keywords: Heat and mass exchange processes, thermodynamic efficiency, warmly technological scheme, petrochemistry, thermal losses
IDENTIFICATION BRIDGING AND STRUCTURAL ANALYSIS OF THERMO-TECHNOLOGICAL GAS SEPARATION SCHEME IN ETHYLENE PRODUCTION FOR DETERMINATION OF THERMAL EFFECTIVENESS
S.I. Ivanova
Research center of problem of power energy of Kazan scientific center Russian Academy of Sciences, 420111, Lobachevski St., 2/31, Kazan, Russia, tel. (843) 276-79-53,
e-mail: workscience@yandex.ru
Abstract
In this article was made analysis of structure and bridging of thermo-technological gas separation scheme in ethylene production. This analysis based on topology method of mathematical modeling. During analysis was construct informational block diagram, was determine structure and bridging between informational blocks, using matrix of contiguity. Was found a quantity of closed loops forming by constituent of scheme, also, using matrix of cycle, was determined a minimum of flows, conditional break theirs will allow to make logical calculation of thermo-technological gas separation scheme and to determination of thermal effectiveness.
Keywords: mathematical modeling, heat, secondary energy resources.
ANALYSIS HEAT-TECHNOLOGICAL SCHEMES OF PRODUCTION OF PETROCHEMICAL SYNTHESIS USING SEIDEL METHOD
D.V.Yermolaev
denlion@list.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Abstract
In article to be resulted the specification statement of Seidel method for calculation of multielement schemas of productions of petrochemical synthesis, its feature and advantage. As an example the knot of disintegrating of hydroperoxide изопропилбензола the technological schema of a stage of acid disintegrating of hydroperoxide изопропилбензола with reception of commodity phenol and acetone is taken. As a result of the held calculations intercouplings between knot members are revealed, the succession of calculation of vehicles on the basis of the balance equations is determined and results of calorific and thermodynamic analyses are resulted, and also plot demonstrated calorific and эксергетических transformings of currents on Sankey diagram.
Keywords: Heat-technological scheme, mathematical modelling, Seidel method, cumene hydroperoxide, Sankey diagram.
COMPLEX DESIGN PROCEDURE OF MULTITUBULAR HEAT SUPPLY SYSTEM
A.Z. Daminov
Research centre of energy problems of Kazan scientific centre of Russian Academy Sciences,
e-mail: daminov@list.ru
Abstract
The complex design procedure of multitubular heat supply system, including a structural analysis, heat-hydraulic and thermodynamic calculations, is presented. The primary intent of structural analysis consists in the decision of optimum sequence of computation and choice of basic computation working chart of main branch. The heat-hydraulic design procedure determines the values of coolant temperatures and diameters of different pipeline sections, total pressure loss on all route, rate of coolant movement on pipelines. The thermodynamics computation determines ability for explored element to pass or use exergy with the minimum losses (thermodynamics perfection of object), and also enables to estimate power inputs for every heat consumer.
Keywords: heat supply system, design procedure, structural analysis, thermodynamics, heat exchange, exergy.
THE DETERMINATION OF OPTIMUM STRUCTURE OF heat supply system OF LARGE CITY WITH RAMIFIED HEAT NETWORKS
A.Z. Daminov
Research centre of energy problems of Kazan scientific centre of Russian Academy Sciences,
e-mail: daminov@list.ru
Annotation
The determination of optimum sequence of computation of the pipeline system of large city is conducted by the structural design, the basic task of which consists in establishment of interdependence between elements into the given system. The structural and topology complication of heat supply systems is presented on the example of double-pipe scheme of the closed system of centralized heat supply of Kazan. The structural analysis is executed in two stages. At the beginning in chart the aggregate of the elements overcame by the feed-backs and not included not in one contour is selected. The choice into every contour of the best aggregate of flows is further conducted, digging up which converts a contour into the scheme broken a secret. The conducted analysis of heat supply system of Kazan taking into account possibilities of redistribution of loading enables to present all system of city as a circular scheme.
Keywords: heat supply system, mathematical simulation, structural analysis, systems analysis, optimization.
POWER GENERATION STATIONS
THE ANALYSIS OF STRUCTURE AND EXERGIC PARAMETERS OF THERMODYNAMIC EFFICIENCY OF CENTRAL SYSTEMS POWDERING ON THERMOELECTRIC POWER STATION
G.R. Mingaleeva
mingaleeva-gr@mail.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Abstract
The central systems пылеприготовления on ТЭС are considered, the analysis of structure of the technological circuit is carried out. The estimation of thermodynamic efficiency of systems with steam and gas drying fuel was carried out exergic by a method. Are determined exergic parameters of system, such as эксергетический efficiency which has made for system with steam drying fuel of 20,6 %, with gas – 22,3 %. Calculation of a degree of thermodynamic, technological and full perfection of systems is carried out.
Keywords: drying of coal, system of preparation of fuel, pulverized coal, thermodynamic efficiency
THE ANALYSIS OF THERMODYNAMIC EFFICIENCY SYSTEMS OF PREPARATION OF COAL WITH THE GASIFICATION ON AIR BLASTING
A.A. Legkov, G.R. Mingaleeva
mingaleeva-gr@mail.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Abstract
In article the system of preparation of coal to burning with gasification in gasifier is considered. The analysis of a thermal and thermodynamic system effectiveness has been carried out. Calculations were carried out on blocks: the defreezing device, the block of crushing and screen sizing, a dryer, a mill and the block of gasification. Exergic efficiency gasifier makes 61,5 %, and for all system with gasification in gasifier – 48 %. Use chemical эксергии fuel results at gasification in increase of an overall performance of all system on 30 % in comparison with traditional systems with drying and powdering firm fuel.
Keywords: gasification of coal, system of preparation of fuel, gasifier, thermodynamic efficiency
DEPENDENCE OF GROUND CONCENTRATION OF GASEOUS EMISSIONS OF THE HEAT POWER ENTERPRISES ON PARAMETERS OF EMISSIONS AND METEOROLOGICAL CONDITIONS
A.A.Fedosov
fedosov-kazan@mail.ru
Research Center of Power Engineering Problems of Kazan Science Center
the Russian Academy of Sciences
Abstract
In work results calculations of ground concentration gaseous emissions with use the mathematical models offered earlier by the author are resulted. The lead calculations show, that on the fixed distance from a source of emissions there is the maximum ground concentration realized at some speed a wind. At increase in distance from a pipe this maximum is displaced aside smaller values of speed a wind, thus near to a pipe at any speeds a wind there is a zone of practically zero concentration emissions. Dependence of the maximal ground concentration on speed a wind for typical conditions emissions of the heat power enterprises has a flat maximum or has monotonous character.
Keywords
Heat power system, modeling, ground concentration, gaseous emissions, meteorological conditions
POWER AND MECHANICAL ENGINEERING
STRAIN FIELDS IN CREEPING SOLIDS UNDER BIAXIAL LOADING
V.N.Shlyannikov, N.V.Boychenko
Research Center for Power Engineering Problems of the Russian Academy of Sciences
e-mail: tasha1203@mail.ru, shlyannikov@mail.ru
Abstract
An additive decomposition of strain is considered for creeping material. Realized analysis show that creep strain accumulation goes faster than plastic strain accumulation. The method of determination for the higher-order crack-tip strain-rate fields is elaborated and realized in a power-law creeping material under biaxial loading. The results of numerical study of stress strain state under biaxial loading at the blunted crack tip on different creep time are presented. It is well founded that our method gives the best fit for an analytical determination of strain-rate fields under creep conditions. The strain-rate distributions at the crack-tip for three types of biaxial stress states, creep time are displayed.
Key words: Biaxial loading, higher-order terms, crack-tip field, plane strain, creeping materials.
ELASTIC-PLASTIC SOLUTION OF CRACK TIP DIRECTION
S.Yu.Kislova
Researches Center for Power Engineering Problems of the Russian Academy of Sciences
e-mail: svetlana_kislova@mail.ru
Keywords: crack growth angle, finite element analysis, small scale yielding, second order stress field, elastic-plastic behavior of the material, radial and angular stress distributions.
Abstract
The numerical calculation of crack tip direction for different condition of biaxial stress is conducted. The comparison between experimental and theoretical results are shown. The present work is based on the assumption that the tangential stresses have to have extremum along the crack growth direction. Nonlinear analysis has been made by solving the partial differential equations governing the dominant singularity to study the displacements, stresses and strains near the crack tip for the complete range of mixed mode loading between Mode I and Mode II. It is clear from the plots the numerical and experimental results have the good agreement with each other.
NUMERICAL RESEARCH OF THE STRAIN STRESS STATE OF A TURBINE DISK UNDER CREEP CONDITIONS AT THE BIG OPERATING TIME
B.V. Ilchenko
ilchenkoboris@pochta.rui
Researches Center for Power Engineering Problems of the Russian Academy of Sciences
Abstract
Numerical research of the strain stress state of a disk of steam turbine is in-process lead at the big operating time in view of a creeping of a structural material. At accounts finite element method (FEM) was used. For the exposition of the law of a creeping resting on an experimental curve, the theory of yielding was applied. Account is executed with use of two types of design model: at an operation of own mass of a disk – axisymmetric model FEM; at an operation of contour loading – plane model FEM. The program of accounts under both design model provided five stages of lifetime – 1000, 1000, 100000, 200000, and 270000 hours. Such approach has allowed to track a kinetics tensely – the strained condition on stages of maintenance of a rotor.Values of the maximum components of stress and strains on stages of an operating time in maintenance are defined. The increase of the contribution of the shift strains causing development of effects of nonlinear deformation is marked It is established, that the basic damaging factor are accumulated in maintenance in the field of fastening holes of a creep strain which than 100000 hours at longevity there are more can exceed specified limiting values.
Keywords: Disk of steam turbine, finite element method, the strain stress state, a creep, lifetime .
CALCULATION OF THE CYLINDER WITH THE SEMIELLIPTIC CRACK IN PHYSICALLY NONLINEAR STATEMENT
R.F.Shagivaleev, R.R.Jarullin
shagivaleevramil@mail.ru, yarullin_r@mail.ru
Research centre of problems of power of KazNtS of the Russian Academy of Sciences
Keywords: the pipeline, semielliptic crack, method of final elements, flat tension, flat deformation.
Abstract
Nonlinear calculation of the cylinder with the semielliptic crack, loaded with internal pressure is carried out. Distributions a component of pressure on front of the semielliptic crack located on an internal surface of the cylinder are defined. The area of transition from flat deformation to a flat tension is studied and the topology of the settlement scheme with a condensation of a grid of final elements to a free internal surface of the cylinder is proved.
APPROXIMATION OF THE GENERALIZED PARAMETER OF CONSTRAINT FOR VARIOUS CONDITIONS НАГРУЖЕНИЯ
O.V.Klejdman *, O.N.Tjuleneva **, A.M.Tartygasheva ***
tasha1203@mail.ru
* Kazan state power university
** Kazan state university
*** Research centre of problems of power of KazNtS of the Russian Academy of Sciences
Keywords: crack, the generalised parametre of constraint, the decision of Hutchinson-Rajs-Rozengren, approximation, the elastic-plastic analysis.
Abstract
On a basis the analysis, it is received dependence of the generalised parametre of constraint on conditions двухосного and plastic properties of a material. The analytical form of representation of elastic-plastic fields of parametres of the is intense-deformed condition in the field of crack top is established. Are received dependence formulas between the generalised parametre of constraint, conditions and plastic properties of a material.
ECONOMICS, ECOLOGY, INNOVATIVE TECHNOLOGIES AND PROCESSES IN POWER ENGINEERING
CONDITIONS OF STEADY RADIATION OF ELASTIC WAVES IN A STREAM OF A COMPRESSED LIQUID IN MAINTENANCE ENERGY-SAVING TECHNOLOGY OF EXTRACTION OF NATURAL BITUMEN
L.I.Samburova
Research centre of power engineering problems of the Kazan Science Centre
of the Russian Academy of Sciences
kravtsov@mail.knc.ru
Abstract
In work process of excitation of elastic waves by means of an oscillator is investigated, allowing to provide energy saving during extraction of natural bitumen. The device represents jet gas-dynamic an oscillator with resonant chambers in which the part of energy of the agent forced in a layer will be transformed to energy of elastic waves. It is experimentally established{installed}, that a mode of steady generation of the fluctuations, caused by presence in resonant chambers gas-dynamic a feedback, it is supported{maintained} on the set frequencies of fluctuations in wide enough range of change of pressure on an output of the generator (from 0,6 up to 2,5 MPa). Thus values of the mass charge of air on an input in the generator change within the limits of 0,07-0,3 kg/with.
Keywords: gas-dynamic a radiator, fluctuations, amplitude, frequency, a productive layer, natural bitumens, oil.
SELF-OSCILLATIONS IN A JET RADIATOR. MATHEMATICAL MODEL
Ja.I.Kravtsov, E.A.Marfin
Research centre of power engineering problems of the Kazan Science Centre
of the Russian Academy of Sciences
marfin@mail.knc.ru
Abstract
In work the mathematical model of process of excitation of self-oscillations in a stream of a liquid by means of a jet radiator is presented. The device is intended for realization energy-saving technology of the integrated influence on productive layers by development of oil deposits. The radiator on the basis of resonator Helmholtz represents the cylindrical chamber with two apertures – nozzles, located symmetrically on the opposite ends of the chamber. The effect of hydrodynamical interaction of vortical structures is put in a basis of mathematical model in the resonant chamber of a radiator. Use of the developed model allows optimizing geometrical parameters of the device under the considered conditions of its operation.
Keywords: integrated influence, productive layer, oil, a jet radiator, resonator Helmholtz, resonant chamber.
THE USE OF BIOMASS FOR ENERGY SUPPLY OF AGROINDUSTRIAL COMPLEX
Y.V. Karaeva
Research centre of energy problems of Kazan scientific centre of Russian Academy Sciences,
e-mail: julieenergy@list.ru
Abstract
In work the results of numeral research of inclusion of bioenergy plants in the system of energy supply of stock-raising complexes district of the Buinsk of the Republic Tatarstan are presented. Economic the use of options of home producers of the «СпецЭнергоСнаб» LTD, the «СИПРИС» LTD, is expedient, «Фактор» and AO of «Стройтехника », they is most acceptable to the given district on the economic indicators. The bioenergy equipment which is recommended for the input in exploitation in the complexes of large horned cattle and pig breeding economies district of the Buinsk of republic is definite as a result.
Keywords: agroindustrial complex, bioenergetics, energy saving, biomass, biogas, bioenergy plant, technology, energy supply.