Transactions of Academenergo 2007 №3

e-mail: cyberincorp@mail.ru
The research center of problems of power in the Russian Academy of Science
Keywords: radial a component of speed, model of Kutateladze-Habahpashev, pheological parameters, njutonian liquid, critical modes, the infinite coaxial channel
Abstract:
In the given work are the mathematical model of numerical research of critical modes of heat exchange at current unnjutonian liquid on an initial site of the coaxial channel resulted. The results of numerical research presented in the form of dependences of temperature, axial and radial a component of speed and viscosity from the dimensionless defining parameters which are responsible for rheology of a liquid. On border of the channel are thermal boundary conditions of the first sort set.

e-mail: evachagina@mail.ru
Research center fоr Power Engineering Problems Kazan Scientific Center Russian Academy of Sciences
Keywords: Konfuzor-diffuzor, viscoelastic environments, heat exchange, thermal initial area, laminar flow, numeral methods
Abstract:
In work the method of decision of task is offered about the heat exchange at the laminar flow of viscid-resilient liquid in the channels of type «konfuzor-diffuzor». The development of mathematical model and method of computation of heat exchange is made at the flow of viscoelastic environments in the channels of type «konfuzor-diffuzor». In the given work one of methods of realization of the elliptic raising of the considered task of heat exchange is offered with the calculation of length of thermal initial area. For description of reological properties of liquid the model of differential type is used, with the use of function of kinematics tenzor of the Uayta-Mettsnera first and second orders.

e-mail: zdor_victoria@mail.ru, eshamsutd.kazan@mail.ru
Researches Center for Power Engineering Problems of Kazan Scientific Center of the Russian Academy of Sciences
Keywords: mathematical model, heat exchange, hydrodynamics, numerical researches, boundary conditions, assumptions, viscosity, heat conductivity
Аbstract
In the produced operation the mathematical model hydrodynamic and heat exchange processes is considered at a laminar flow of an axisymmetric spray of fuel oil in the restricted bulk. The problem of heating of fuel oil of brand М-100 in the cylindrical basin was solved. The idealized solution of the designed model will allow to carry out numerical studies and to gain orthographic epures of allocation a component of a vector of velocity, fields of temperatures and a vector of a curl. Data acquisition of orthographic epures is necessary for holding the analysis of originating hydrodynamic and calorific processes at a laminar flow of an axisymmetric spray of fuel oil.

e-mail: mihalkina_gulya@yandex.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Key words: Factor heat emission, gas-liquid stream, a film of a liquid
Abstract:
In work results of an experimental research heat transmission in a film of a liquid on system air – water are submitted at change of speed of air in a contact element from 12 up to 55 m/s, and the specific charge of water from 0,3 up to 3,5 m3/ m*h. Dependences for factors heat emission as criterial the equations which are well correlated with dependence of frequency of large waves on a surface of a film from charges of gas and a liquid are received. Comparison of experimental data of factors теплоотдачи with designed on theoretical dependences has shown their good consent that confirms the assumption of prevailing influence on heat transmission in a film of large waves.

e-mail: daminov@list.ru
Research centre of energy problems of Kazan scientific centre of Russian Academy Sciences
Keywords: heat supply system, design procedure, structural, value engineering, thermodynamics, heat exchange, forecasting.
Abstract:
In work is given general conception of development method of heat supply systems settlements with the use of scientific methods of analysis and with the use of technological decisions on energy saving. The given scenario includes the preliminary detailed analysis of existing organization of heat supply system on basis of developed complex design procedure of heat supply system (structural analysis, heat-hydraulic, thermodynamics and techno-economic computations), development of technological decisions on the energy source saving and their estimation, approbation of the developed method and offered technological solutions, conducting of comparative techno-economic analysis at the use of traditional and perspective heat sources, and also development forecasting of heat supply system.

e-mail: dmitriev@list.ru, ezhovP@mail.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Key words: tangential swirler, hydraulic resistance, gas-liquid stream, the vortical chamber
Abstract:
In work the basic dynamic characteristics gas-liquid stream in the vortical device intended for complex clearing of great volumes of gas emissions of thermal power stations, working on firm fuel are submitted. Researches were carried out on system air – water at the charge of air of 300-800 m3/h and the charge of water of 0-0,35 m3/h. Dependences of holding ability and hydraulic resistance of the vortical device on loading on phases are received.

e-mail: eccolga@mail.ru, mingaleeva-gr@mail.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Keywords: Heat power systems, firm fuel, thermodynamics, exergy.
Abstract
In article results of the analysis of thermodynamic efficiency of the capital and ancillary equipments of heat technological scheme of mini thermoelectric power station with pyrolysis of coal and gasification of coal char are presented. At carrying out of calculations all scheme has been broken into three blocks: the block of preparation of coal, the block of the capital equipment and the block of reception of the activated charcoal. As a method of the thermodynamic analysis it is chosen exergic analysis, allowing to consider processes of transformation of coal, its change chemical exergy by manufacture of thermal and electric energy. As criterion of efficiency acts exergic efficiency. On the basis of the received data the exergy chart of streams exergy for the given scheme is made.

Ulyanovsk state technical university
Keywords: power installations, firm fuel, a disperse stream, an interface, a condensate
Abstract:
The model of a disperse interface and calculation method heat a working body, efficiency veils in a flowing part installations on firm fuel are offered. The model and a method adequately reflect the basic features of exchange processes in the conditions of inertial loss of the condensed particles on a surface of a flowing part.

e-mail: sharapov@mail.ru
Ulyanovsk state technical university
Keywords: the electric power, теплопотребление, a heating plant
Abstract:
In article the approached methods of definition of specific development of the electric power on thermal consumption, the most now in use in practice of calculations of thermal schemes of thermal power station are considered. Comparison of methods is executed, features of their application are shown.

e-mail: sharapov@mail.ru
Ulyanovsk state technical university
Keywords: durability of pipelines, corrosion, aggressive gases, water
Abstract:
Article is devoted questions of increase of reliability and durability of pipelines and the equipment of systems of a heat supply and them heat by protection waters from secondary saturation by aggressive gases.

e-mail: tasha1203@mail.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Key words: Biaxial loading, higher-order terms, crack-tip field, plane strain, creeping materials.
Abstract
The amplitude coefficients of three-term asymptotic crack-tip fields for two loading types were obtained. The analysis spent for two load types: fixed loading (characterized by constancy of efforts) and fixed displacement (with constant strains), three values of biaxial coefficient (+1, 0,-1) and nine stages of creep time (from 100 to 5  hours). Comparative analysis of amplitude coefficients  and   at symmetric fixed loading and fixed displacement was spent in this work. Due to the complexities we consider in the present work different creeping stages for transition from small-scale creep to extensive creep, which is described by the characteristic time tT. As a result it was determine the kinetics of amplitude coefficients for two loading types, three values of biaxial coefficient and nine stages of creep time.

e-mail: shagivaleevramil@mail.ru
The research centre of problems of power of KazNtS of the Russian Academy of Sciences
Keywords: a semielliptic crack, a semicircular crack, crack front, the cylinder, a method of final elements, flat deformation, a flat tension.
Abstract:
In work distributions a component of pressure with reference to semielliptic and semicircular forms of the initial crack located on an internal surface of the cylinder, loaded with internal pressure and axial stretching or compressing force in physically nonlinear statement are defined. Character of influence of the form of a semielliptic crack on the VAT in regular and transitive areas of the cylinder is established

ECONOMICS, ECOLOGY, INNOVATIVE TECHNOLOGIES AND PROCESSES IN POWER ENGINEERING

PROSPECTS OF THE USE OF PASSING OIL GAS IN SYSTEM OF ENERGY SUPPLY OF OILFIELDS
K.F. Gafarov

e-mail: GafarovKF@oilpro.ru
Research centre of energy problems of Kazan scientific centre of Russian Academy Sciences
Keywords: energy supply system, utilization of second resources, energy effectiveness, energy saving, oil gas.
Abstract:
The questions of modern state of utilization of casing-head gas and tendency of development of small energy on the oilfields of Russia and countries of CIS are considered. The task of development and realization of technological schemes and equipment for the effective decision of problem of commercial utilization of the given gases is put. The possible variants of casing-head gas application are offered in the system of energy supply of oilfields on the base of mini thermoelectric power station. Dependences of effective installation of mini thermoelectric power station (arrangement, power) from power of casing-head gas potential and energy consumption of oilfield are definite (heating of oil, technological needs, heating of production apartments and etc up).

e-mail: kolinSA@yandex.ru
The research centre of problems of power of KazNS of the Russian Academy of Sciences
Keywords: intracyclic gasification, chemical processing of coal, synthesis-gas
Abstract:
Traditional technological processes of processing of coal, such as gasification of coal with reception of generating gas and liquid synthetic, and new processes at which coal transformations occur on the mechanism mediated by transfer of action of the catalyst through liquid and gaseous components of the reactionary environment are considered. Scales and forecasts on use of technologies of processing of coal in the world, and also results of the comparative analysis of ecological indicators of work coal TES are resulted at traditional burning of coal and with intracyclic gasification.