Contents
HEAT-AND-POWER ENGINEERING FUNDAMENTALS
REYNOLDS ANALOGY IN COMPLEX TURBULENT FLOWS
I.A.Davletshin
e-mail: davletshin@mail.ru
Research Center of Power Engineering Problems of the Russian Academy of Sciences
Keywords: skin friction, heat flux, Reynolds analogy, fluctuations, flow separation
Abstract
Represented in this paper are the experimental data on surface friction and thermal current observed on the channel wall in separated turbulent flow. There are steady-state and pulsating flows considered herein in wide speed and frequency ranges of superimposed pulsations of the working medium (air) consumption. Carried out in these proceedings is the analysis of interconnection between hydrodynamic and thermal processes taking place in the flows studied.
DETERMINATION OF THE COEFFICIENT OF HEAT TRANSFER THROUGH THE WALL OF SPRING-TWISTED CHANNELS OF HEAT-EXCHANGE APPARATUSES
A.N. Dolgov, A.Y. Zolotonosov, Y.D. Zolotonosov
e-mail: zolotonosov@mail.ru
Limited Liability Company “Progress” Kazan State Power Engineering University
Keywords: spring-twisted and smooth pipes, the coefficient of the heat-giving, heat changing apparatus
Abstract
The present proceedings are devoted to the analysis of the heat-exchange equipment condition, as well as to the prospects of its modernization on the basis of spring-twisted pipes, to determination of the coefficients of heat transfer through the spring-twisted wall and to comparison of modernized apparatuses thermal performance with that of already studied plain-tube heat-exchange equipment.
ALGORITHM OF DEFINITION OF SAFE THERMAL MODES IN CHANNELS HEAT&MASS EXCHANGE THE EQUIPMENT OF CONTINUOUS ACTION
Kadyyrov A.I., Vachagina E.K., Shamsutdinov E.V.
e-mail: aidarik@rambler.ru , evachagina@mail.ru
Research Center of Power Engineering Problems of the Russian Academy of Sciences
Keywords: heat&mass exchange equipment, reological equations, nonlinearly viscous liquids
Abstract
Developed technique and algorithm of definition of safe thermal modes in channels of heat&mass exchange equipment of continuous action are presented. Reactive nonlinearly viscous liquids are considered as working environments. As a result of the analysis of the technical literature the generalized algorithm of a technique including nine basic stages is developed: problem statement, a choice heattehnologic equipment; the analysis of technological process; modelling; a choice or development of the program complex for obtained model of heat&mass exchange process; testing of a program complex; input of initial data; carrying out of a complex of numerical researches; development of recommendations. The special attention is given to a choice of reological equations for environment condition. The developing technique can be used for obtain of the automated regulation of technological process.
INDUSTRIAL HEAT-AND-POWER ENGINEERING
EFFICIENCY ENHANCEMENT AND ENERGY-SAVING DURING ABSORBENT GASES PURIFICATION OF CUMENE IN THE PROCESS OF PHENOL MANUFACTURING
A.G. Laptev, M.I. Farakhov, M.M. Basharov
e-mail: farahov@list.rufarahov@list.ru
Kazan State Power Engineering University Engineering-and-promotional Centre “Inzhekhim” Open JSC “Kazanorgsintez”
Keywords: phenol, absorbing gases, power savings, насадочные devices
Abstract
The one-phasic power saving up technological scheme is offered and hardware registration with new nozzles in exchange колпачковым to clearing plates абгазов is chosen. The power savings consist in an exception of the second stage of clearing абгаза in adsorbers at the expense of increase of efficiency of an absorber with use new насадочных contact devices.
POWER AND MECHANICAL ENGINEERING
PROCEEDINGS ON MINI-COOLING STACKS MODERNIZATION
V.L. Fedyayev, I.V. Morenko, R.F. Gaynullin, R.F. Gaynullina
e-mail: morenko@mail.ru
Mechanics and Mechanical Engineering Institute of the Russian Academy of Sciences
Kazan State Technical Tupolev’s University
Keywords: mini-cooling stacks, water allocation system, spraying devices
Abstract
There are the advantages and disadvantages of mini-cooling stacks of various types discussed in this paper, and there are the three lines offered therein for highly efficient small-sized cooling stacks designing, as well. There are the two variants of modernization represented herein for primary ejector cooling stack of “Musson” type, in compliance with one of these lines. The quintessence of these two variants consists in that water allocation system is changed, the height of cooling stack frame is increased and spraying devices are applied according to them. It follows from the calculation results that the temperature difference of cooled water increases by 67% in comparison with the temperature difference of water contained in primary cooling stack in case the modernization is performed according to the first variant, and – by 83%, correspondingly, in case the second variant of modernization is used.
DEFLECTED MODE (NDS) OF THE VT-50 STEAM TURBINE’S DISK GENERATED DURING REPAIRING TECHNOLOGIES APPLICATION
R.R. Yarullin
e-mail: yarullin_r@mail.ru
Research Center of Power Engineering Problems of the Russian Academy of Sciences
Keywords: the finite-element method, disk of turbine, technologies application
Abstract
There is the deflected mode (NDS) of the disk of VT-50 steam turbine studied in these proceedings both for the standard configuration variant and the repairing technologies variants which are applied with respect to longitudinal key groove under the operating conditions of disk loading. There are the design models of axial key groove drawn up according to the finite-element method, elasticity and plasticity calculations performed for NDS parameters and the respective recommendations on repairing technologies application given herein, as well.
ECONOMICS, ECOLOGY, INNOVATIVE TECHNOLOGIES AND PROCESSES IN POWER ENGINEERING
DEVELOPMENT OF UNTRADITIONAL AND RENEWABLE ENERGY SOURCES IN the REPUBLIC TATARSTAN
R.М. Nigmatullin, E.V. Shamsutdinov, A.Z. Daminov
e-mail: daminov@list.ru , eshamsutd.kazan@mail.ru
Research Center of Power Engineering Problems of the Russian Academy of Sciences
Keywords: untraditional and renewable energy sources, energy supply, efficiency, potential, energy saving, technology, making
Abstract
The analysis of basic tendencies in the use of untraditional and renewable energy sources in the Republic Tatarstan are presented. The basic development purposes of alternative energy are shown. As main directions of producing of energy are pointed hydro-power engineering, boiler rooms on the passing gas, bioenergy technologies and wind-power engineering. Estimations of the perspective set power at introduction of the recommended equipment are given. The volumes of electric and thermal energy, which will be generated on the basis of renewable energy sources, are presented. The basic measures of energy saving for the plant-grower and stock-raising are given.
PROCEEDINGS ON THE PROBLEM CONCERNING THE CONDITION AND RESOURCES OF OPERATIONAL AND POWER CHARACTERISTICS IMPROVEMENT FOR HEAT-ENGINES USED IN TRANSPORT SYSTEMS
A.V. Pinchuk, V.A. Pinchuk
e-mail: pinchuk@yandex.ru
Scientific-and-technical Centre “PROTEY” Baltic State Technical University
Keywords: heat-and-power engineering, power characteristics, transport systems
Abstract
Substantiated in this paper are the resources and opportunities which could improve operational and power characteristics of heat jet engines used in transport units of various destinations; the substantiation is carried out taking into consideration the really felt needs for enhancement of general efficiency of processes, technologies and systems implemented in the sphere of heat-and-power engineering.