Contents
HEAT-AND-POWER ENGINEERING FUNDAMENTALS
ENERGY AND DYNAMICS RELAXATION EQUATIONS FOR VISCOUS MEDIUM FLOW IN CYLINDRICAL COORDINATE
Yu.A. Kirsanov
e-mail: kirsanov-yury@mail.ru
The Research Center of Power Engineering Problems of the Russian Academy of Sciences
Keywords: Gas flow, equations dynamics, energy, thermal relaxation, stress relaxation, hyperbolic-type equations, cylindrical coordinate.
Abstract
The analysis of the unsteady Navier-Stoks equation and the gas flow energy equations is given as the parabolic differential equations. The unavailability of the equations for the fast process description is determined in perticuler for the velocity and temperature turbulent pulsations. This defect is possible to overcome by means of the hyperbolic-type equations, considerating the stress-and thermal relaxations. The conclusion of the gas flow equations is drawn into cylindrical coordinate.
AREAS OF AMBIGUITY OF THE DECISION OF A STATIONARY PROBLEM OF LAMINAR CURRENT NEWTOON NEWTONIAN AND GENERALIZED – NEWTONIAN LIQUIDS UNDER BOUNDARY THIRD SORT CONDITIONS
A.I.Kadyyrov
e-mail: aidarik@rambler.ru
The Research Center of Power Engineering Problems of the Russian Academy of Sciences
Keywords: energy equation, ambiguity decision, generalized-Newtonian liquids, thermal boundary condition
Abstract
The decision of system of the equations of movement and the conservation of energy, describing heat transfer is analyzed at laminar current of a liquid in an infinite round pipe. The working environment is characterized by presence chemical and dissipative sources of a thermal emission. As boundary conditions on a wall of a pipe hydrodynamical boundary conditions of sticking and thermal boundary third sort conditions are accepted. Every possible dependences hydrodynamical, thermal and rheological testimonials are investigated from of various operating parameters. Character heat transfer in an infinite pipe is revealed at prevailing chemical and dissipative sources of thermal emissions. Areas of ambiguity of decisions of considered system of the equations are constructed at current pseudo-plastic, Newtonian and dilatant liquids and their comparison is lead.
CHANGES LONGITUDINAL COMPONENTS OF THE VECTOR OF SPEED AND NONLINEAR FUNCTION OF VISCOSITY AT CRITICAL MODES BY CURRENT OF THE STRUCTURALLY-VISCOUS LIQUID IN THE PLANE-PARALLEL CANNEL
B.R.Abajdullin
e-mail: cyberincorp@mail.ru
The Research Center of Power Engineering Problems of the Russian Academy of Sciences
Keywords: a structurally-viscous liquid, nonlinear function of viscosity, the plane-parallel channel, a level-by-level method of the decision, critical modes, energy of activation of chemical reaction.
Abstract
In job search and the description of critical values for defined from various dimensionless parameters of system of the equations of hydrodynamics and conservation of energy of functions longitudinal components of speed and dynamic viscosity is spent at current of a structurally-viscous liquid in the infinite plane-parallel channel. It is both thermal and hydrodynamical problems considered. On walls of the channel are the most widespread conditions of a constancy of temperature considered.
UNSTATIONARY TASK OF LAMINAR FLOW OF NONLINEAR-VISCID LIQUID IN ROUND PIPE IN THE CONDITIONS OF HIGH CLOSENESS OF ENERGY IN THREAD AND LINEAR HEATING OF WALL
D.V. Ananev
e-mail: Dima211083@yandex.ru
Research center fоr Power Engineering Problems Kazan Scientific Center Russian Academy of Sciences
Keywords: Critical thermal modes, laminar flow, unstationary scope terms, nonlinear-viscid liquid, linear heating of wall, dissipative and chemical sources of thermal emission, unnewtonian liquids
Abstract
In the work the critical thermal modes of laminar flow of viscid liquid are explored in the round pipe at the unstationary scope terms. As scope terms the hydrodynamic scope terms of adhesion are set, and also thermal scope terms taking into account the linear heating of wall of pipe. As inlying sources of thermal emission consider dissipative and chemical sources. In work the influence of handling parameters is explored on the origin of progressive growth of temperature at the flow by binding newtonian and nonlinear-viscid unnewtonian liquids in the round pipe. The methods of decision of scopes of the critical modes of the unstabilized heat exchange during exploitation of heat power and chemical technology equipment are developed.
INDUSTRIAL HEAT-AND-POWER ENGINEERING
INCREASE OF PERFORMANCE OF USE OF HEATERS IN THE SCHEME OF ACID DISINTEGRATING OF CUMENE HYDROPEROXIDE BY APPLICATION ENERGY-TECHNOLOGICAL COMBINING
D.V.Yermolaev
e-mail: denlion@list.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Keywords: The thermodynamic analysis, exergy, exergy coefficient of efficiency, heater.
Abstract
In article comparison entropy and exergy methods of the thermodynamic analysis, their advantage and lacks is described, definition formulas exergy performance for various types of the equipment are resulted. Calculation heaters on an example technological scheme of acid digestion of cumene hydroperoxide, characterised difficult heat-exchange processes. Comparisons by performance of the erected vehicles are introduced and recommendations about use of the given method are given.
POWER GENERATION STATIONS
CALCULATION POLLUTION A GROUND LAYER OF AIR BY EMISSIONS KAZAN TEC
A.A.Fedosov
e-mail: fedosov-kazan@mail.ru
Research Center of Power Engineering Problems of Kazan Science Center the Russian Academy of Sciences
Keywords: Heat power system, modeling, ground concentration, gaseous emissions, meteorological conditions
Abstract
In work the design procedure ground concentration of emissions from several dot sources pollution is presented, examples of calculations are resulted. Calculation distribution of ground concentration emissions from several dot sources of pollution is lead. Chimneys TPP in scale of a surrounding atmosphere are considered as dot sources, assumptions of homogeneous district and constant meteorological parameters are accepted. Conditions of dispersion of substances thrown out in an atmosphere are defined by a class of stability. Influence of a direction and sizes of speed of a wind on pollution of a ground layer of an atmosphere of Kazan and its vicinities by emissions oxides nitrogen and sulfur of the Kazan thermal power stations is shown.
POWER AND MECHANICAL ENGINEERING
ESTIMATION OF INFLUENCE OF CONDITIONS CONTACT НАГРУЖЕНИЯ ON BEARING ABILITY OF DISKS OF STEAM TURBINES
D.V.Toporov
e-mail: denistop5@mail.ru
Research centre of problems of power of the Russian Academy of Sciences
Keywords: the is intense-deformed condition, submodelling, elastic and elastic-plastic statement.
Abstract
In the present work with the procedure of payments of the is intense-deformed condition of typical disks of rotors of steam turbines taking into account influence of operational factors is considered.
The analysis of influence of all power factors operating on object of research at various number of turns of a rotor of the turbine is carried out. Calculations in elastic and elastic-plastic statement with application of a method of submodelling are carried out. Zones of concentration of pressure in a disk are defined. Dependence of the is intense-deformed condition of a disk on number of turns and conditions contact is established.
ECONOMICS, ECOLOGY, INNOVATIVE TECHNOLOGIES AND PROCESSES IN POWER ENGINEERING
BASES OF METHODS OF CREATION OF BRANCH SYSTEMS ATU IN POWER CONSUMPTION AND POWER SAVINGS SPHERE
A.V.Bobrjakov
e-mail: bobrjakov@mpei.ru
The Moscow power institute (technical university)
Keywords: power consumption, the power savings, is administrative-technological management, a fuel and energy resource, planning, a design procedure.
Abstract
In article features of power consumption are analyzed by budgetary branch and methods of is administrative-technological management теплопотреблением and power savings are offered. The factors leading to a deviation of standard specific heating characteristics of consumers of fuel and energy resources from their actual values are considered. In work factor changes теплоотдачи and temperatures of an external surface of a building for protecting walls of seven typical configurations of buildings in the plan are analyzed and generalised. Necessity of definition of the conservative heating characteristic of the educational institution considering thermal emissions from electric devices is proved. Branch information files of quarterly actual power consumption of subordinated objects are staticized.
MATHEMATICAL MODEL OF DEVELOPMENT OF THE SYSTEM OF ENERGY SUPPLY OF AGROINDUSTRIAL COMPLEX ON THE BASIS OF INTRODUCTION OF BIOENERGY TECHNOLOGIES
Y.V. Karaeva
e-mail: julieenergy@list.ru
Research centre of energy problems of Kazan scientific centre of Russian Academy Sciences,
Keywords: mathematical model, system, renewable energy source, biogas, energy saving, bioenergy plant.
Abstract
The work is devoted to the modelling of the system of energy supply of agroindustrial complex of region, based on application of technology of anaerobic digestion of wastes of stock-raising. For the decision of the put task the data-base is formed on the biogas plants of the Russian producers and the existing model row of the considered equipment is analyzed. On the basis of numeral researches the optimum configuration of equipment with the least value of the specific discounted expenditures is exposed, and also the necessary quantity of bioenergy equipment is definite for the complete processing of wastes of stock-raising in region. The cost price of the thermal and electric energy generated from biogas is definite. The pattern of consumption of energy supply is given in the agroindustrial complex of the Republic Tatarstan at introduction of project of development of bioenergetics.
THE STRUCTURE OF ENERGY CONSUMPTION AND THE DIRECTION OF ENERGY SAVING IN SYSTEM OF AGROINDUSTRIAL COMPLEX
R.М. Nigmatullin, E.V. Shamsutdinov, Y.G. Nazmeev
e-mail: EShamsutd.kazan.@mail.ru
Research centre of energy problems of Kazan scientific centre of Russian Academy Sciences,
Keywords: energy supply, recurs saving, energy saving, heat supply system, agriculture, agroindustrial complex, optimization.
Abstract
In work the structure of energy consumption and specific charges of energy of production of separate types of products of agriculture of Russia is presented. The most perspective paths of rise of economic efficiency due to the use of recurs-energy saving technologies are considered. The classification of basic directions in area of energy saving of the systems of energy consumption of agriculture is given. The information is presented about efficiency of the use of the decentralized energy supply of agriculture on the basis of application of renewable energy sources and small power engineering. The measures on the decline of expenditures of energy and rise of economic efficiency of agricultural production are considered.
THE TECHNICAL AND ECONOMIC ANALYSIS MODERNIZED heat-technological SCHEMES OF CIRCULATING HEATING OF BLACK OIL ON THE EXAMPLE OF THE KAZAN THERMAL POWER STATION-2
R.F. Kamalov, E.V. Shamsutdinov
e-mail: rustemran@mail.ru , eshamsutd.kazan@mail.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Keywords: Power plant, black oil facilities, modernization, the technical and economic analysis, economy of energy.
Abstract
In work the principle of work existing теплотехнологической schemes of circulating heating of black oil on an example of a black oil facilities of the Kazan thermal power station-2 of public joint-stock company «Tatenergo». After carrying out of the analysis of work of the given scheme the modernized scheme, allowed to deduce from work a number heat-exchange the equipment has been offered. The combined one-stage scheme of a black oil facilities of the Kazan thermal power station-2 is as a result offered. The technical and economic analysis of an overall performance new теплотехнологической schemes has shown an opportunity of reception of significant economy on electric and thermal energy.