Contents
HEAT-AND-POWER ENGINEERING FUNDAMENTALS
RESEARCH OF HEAT EXCHANGE IN HOMOPHASE POLYMERIZER REACTOR UNDER THERMAL THIRD SORT BOUNDARY CONDITIONS
A.I.Kadyyrov
e-mail: aidarik@rambler.ru
The research center of problems of power in the Russian Academy of Science
Keywords: heat-mass exchange, monophase polymerizer reactor, rheokinetics, dissipation
Abstract
Developed mathematical model stationary heat-mass exchange in the homophase polymerizer reactor of type «a round pipe» is presented for thermal third sort boundary conditions. Numerical calculations are carried out. The temperature dependences, hydrodynamical, rheological and rheokinetics characteristics of environment from operating parameters are constructed. At some combination of operating parameters in stream polymer environments are observed greater gradients of temperature, there is critical mode heat-and-mass transfer. The estimation of influence dissipative and chemical sources of a thermal emission on character of the stationary mode of polymerization in a reactor is definited. It is established the influences of heat exchange from an environment on heat-and-mass transfer in a stream polymer environments.
INFLUENCE OF GEOMETRY OF THE INFINITE COAXIAL CHANNEL AND RHEOLOGICAL CHARACTERISTICS OF THE LIQUID ON CRITICAL VALUES OF TEMPERATURE, SPEED AND VISCOSITY
B.R.Abajdullin
e-mail: cyberincorp@mail.ru
The research center of problems of power in the Russian Academy of Science
Keywords: a chemical source of heat, unnjutonian liquid, low temperature branches, a level-by-level method of the decision, dilatant liquid, prevailing dissipative source.
Abstract
The mathematical model and algorithm for numerical research of precritical modes of heat exchange are at current of unnjutonian liquid in the coaxial channel resulted. The results of numerical research are presented in the form of dependences of temperature, axial components of speed and viscosity on the defining parameters which are responsible for geometry of the channel, energy of activation of viscous flow and rheological characteristics of liquid. On the channel border there are thermal boundary conditions of the first sort set.
CRITICAL MODES OF UNSTATIONARY PROCESS HEAT – AND MASS TRANSFER IN THE CHEMICAL REACTOR OF CONTINUOUS ACTION AT THE LINEAR WALL HEATING
D.V. Ananev
e-mail: Dima211083@yandex.ru
Research center fоr Power Engineering Problems Kazan Scientific Center Russian Academy of Sciences
Keywords: Unstationary heat and mass transfer, polymerization, reactor, critical mode, progressive growth of temperature, linear heating of wall, numeral methods, laminare flow
Abstract
The mathematical model of unstationary heat and mass transfer in the homophase polymerization tubular reactor of continuous action is presented. The critical modes of unstationary heat and mass transfer in the reactor are investigated. As a result of numeral research the fields of temperatures are got and of the critical modes of polymerization are definited in the homophase chemical reactor of continuous action at the linear wall heating. For the decision of task the iteration numeral methods and method wall of difference charts are used. The speed influence of linear temperature change of the reactor is explored on the origin of progressive growth of temperature.
RESEARCH OF TEPLOFIZICHESKY PROPERTIES BIOACTIVE PREPARATIONS
R.A.Sadykov, R.V.Ivanov, D.N.Antropov
e-mail: Sadykov_R_A@mail.ru
The Kazan architecturally-building university
Keywords: heat conductivity factors, a thermal capacity, bioactive preparations
Abstract
Are experimentally investigated теплофизические properties ksero – and thermounstable 12 irreplaceable высокоочищенных α – forms of amino acids and 9 versions of fermental preparations depending on change of temperature and humidity of products of biosynthesis. Analytical dependences of factors of heat conductivity, температуропроводности and thermal capacities from temperature of bioproducts are received. Results of researches are used for a choice of optimum technological modes of processes of allocation, концентрирования and drying of biologically active preparations.
INDUSTRIAL HEAT-AND-POWER ENGINEERING
EFFICIENCY OF THE RADIANT HEATING ENGINEERING SYSTEMS IN THE INDUSTRY AND POWER
N.A.Nikolaev*, B.M.Zigashin**
e-mail: andr_nik_nik@rambler.ru
* Kazan state technological university ** Kazan state architecturally-building university
Keywords: Heat power system, modeling, radiant heating, radiating pipes, radiators
Abstract
The actual problem of perfection designs of radiating pipes is presented. The analytical definition power light exposure of the objects, allowing to carry out 3d-calculations zone heating is offered. The model and the numerical researches results of radiantly-convection heat exchange in the closed volume with radiators is presented. It was displayed, that trumpet radiators have significant losses of heat with air leaving from under the reflector (up to 9,7% from nominal thermal capacity of the serial radiator). The variant of the radiatordesight modernization allowing to reduce loss on 8,5% is offered.
THE ANALYSIS OF THE INTERNAL AND EXTERNAL PATTERN OF RELATIONS HEAT-TECHNOLOGICAL SCHEME OF STAGE OF ACID DIGESTION IN PHENOL AND ACETONE CO-PRODUCTION
D.V.Yermolaev
e-mail: denlion@list.ru
Research Center for Power Engineering Problems of the Russian Academy of Sciences
Keywords: System analysis, information block diagram, a matrix, is conditional-broken off currents, circuit.
Abstract
The results of the analysis of pattern of connections heat-technological scheme of a stage of acid digestion of cumene hydroperoxide in co-production of phenol and acetone of factory “Ethylene” of Open Society “Kazanorgsintez” are presented. The integrated algorithm of conducting of systems analysis heat-technological schemes of petrochemical productions of look-alike type is demonstrated. The nomenclature of the erected equipment is resulted, the currents proceeding through the schema are described, the succession of calculation of vehicles is demonstrated, and intercouplings between scheme members are revealed.
ESTIMATION OF THERMODYNAMIC EFFECTIVENESS OF THE LOT OF EXTRACTING ETHANE-ETHYLENE FRACTION OF GAS SEPARATION SCHEME IN ETHYLENE PRODUCTION
S.I. Ivanova, E.V. Shamsutdinov
e-mail: workscience@yandex.ru , eshamsutd.kazan@mail.ru
Research center of problem of power energy of Kazan scientific center Russian Academy of Sciences
Keywords: energy conservation, analysis of structure, heat, exergy.
Abstract
In this article procedure of estimation thermo-technological gas separation scheme thermodynamic effectiveness in ethylene production is presented based on exergy method. The criterion for estimation of thermodynamic effectiveness is exergy efficiency. In the issue estimation balance thermo-technological scheme is work out involving ten rated blocks. The lot of extracting ethane-ethylene fraction was investigated. Heat and exergy balances are made up, the waste of exergy for every equipment and all lot are found out, diagram of Sanky are displayed, value of exergy efficiency of every equipment and all lot of ethylene production are found out.
POWER GENERATION STATIONS
RESEARCH OF HEAT TRANSMISSION PROCESSES IN РЕЗЕРВУАРНЫХ PARKS OF BLACK OIL FACILITIES HEATING AND POWER STATION
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: Mathematical model, laminar current, black oil facilities, numerical researches, the tank.
Abstract
The mathematical model heat transmission is presented at laminar flow of the flat flooded free jet of black oil which allows to consider expenses of energy and time of heating in tanks of storage of black oil facilities heating and power station. By the problem statement the number of assumptions is confirmed and the initial system of the equations of the transmission, movement and indissolubility are given. The results of numerical researches of occurring processes heat transmission are presented at heating great volumes of black oil in tanks of storage ТЭС under various boundary conditions on the bottom of the tank.
NUMERICAL RESEARCH OF THE CIRCULATING COMBINED HEATING OF BLACK OIL IN THE TWO TANKS USING THE TWO PARALLEL CONNECTED HEATERS
A.M. Muhametzakirov
e-mail: amm@gmail.com
Research Center of Power Engineering Problems of Kazan Science Center the Russian Academy of Sciences
Keywords: Heat power system, heat and mass exchange processes, modeling, circulating heating, tanks, heaters
Abstract
The mathematical model of the circulating combined heating of black oil in two tanks by means of two parallel connected heaters is presented. Numerical researches are carried out for a case of heating of black oil in tanks in volumes 5000 and 10000 cub.m by means of heaters PM-10-120 and PM-10-60. The cases of presence, and absence of black oil streams are considered from the heater output on input for the winter and summer periods of storage. Researches have shown, that the use of black oil circulation in heaters allows to increase temperature of black oil acting in the boilers torches. Therefore, the black oil heating in tanks occurs a little bit more slowly. The comparison of the received dependences for the years and winter the storage periods is carried out. The analysis has shown, that for both the storage periods the process of the warming up practically does not differ, owing to insignificant environment heat losses.
CALCULATION INITIAL RISE OF EMISSIONS THE HEAT POWER ENTERPRISES AT UNSTABLE AND NEUTRAL ATMOSPHERE STRATIFICATION
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, smoke torch, the emissions, spreading surface, dynamic and thermal rise, speed of a wind, boundary layer of an atmosphere
Abstract
The developed model of rise of a smoke torch in PSA is presented, considering change of the wind speed with height, and also joint ness of dynamic and thermal rise. The comparison with known formulas Brigse and Koncyeva showed the satisfactory concurrence dependences of height initial thermal rise on the thermal parameter. During researches it was found out, that changes of wind speed with height in the boundary layer atmosphere leads to reduction of height initial rise with growth of the source emissions height. The influence of noted effect can reach 20-30%. The initial rise height is maximal for a source of emissions at the surface level. The analysis of analytical formulas and numerical calculations results has shown, that the roughness value of the spreading surface greatly influences the initial emissions rise in the boundary layer atmosphere.
DEFINITION OF OPTIMUM CONDITIONS OF APPLICATION FOR CHEMICAL CLEARINGS OF HEAT POWER EQUIPMENT ТES
N.D.Chichirova, J.V.Abasev
e-mail: pinpin3@mail.ru
Kazan state power university
Keywords: chemical clearings, thermal capacity, TES
Abstract
The presented results of calculations have given the necessary information by working out of technologies of carrying out of chemical clearings since allow to define intervals of values рН existence of shares of the ionic forms which formation promotes effective carrying out of chemical clearings of heat-transmitting surfaces of equipment TES at characteristic temperatures for them, and results of calculations of conditional constants of stability allow to define area of values рН in which комплексон can be spent most full. Calculations of conditional constants of stability gland (III) and copper (II) show that with temperature increase the greatest possible metal consumption decreases on absolute size and on area of values рН existence.
ECONOMICS, ECOLOGY, INNOVATIVE TECHNOLOGIES AND PROCESSES IN POWER ENGINEERING
STATE OF wind-power engineering IN RUSSIAN FEDERATION AND THE TENDENCY OF ITS DEVELOPMENT
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: wind-power engineering, wind-driven power plant, installed capacity, speed of wind, turbine, renewable energy source.
Abstract
The analytical research of the wind-power engineering state is presented in the Russia. The history of development of the alternative energy is presented. The number of potential energy consumers for the decentralized and centralized areas is definited and estimation of the Russian market of wind-driven power plants is given. The basic technical descriptions of wind-driven power plants are displayed for regions with the moderate wind speeds. As a region with the insignificant wind descriptions the Republic Tatarstan is considered. For the given region the recommendations for construction of wind-driven power plants are given.