Contents
HEAT-AND-POWER ENGINEERING FUNDAMENTALS
DIVIDING OF HEAT EXCHANGE COEFFICIENT VALUES ACCORDING TO EXPERIMENTS WITH RECUPERATIVE HEAT EXCHANGER The Research Center of Problems of Power Engineering of Kazan Science Center of the Russian Academy of Sciences, Kazan Key words: Recuperative heat exchangers, heat transfer coefficient, nonlinear PARAMETRIZATION The analysis and shows the fallacy of one of the proposed approaches in the literature to the study of the characteristics of the heat exchanger based on the separation of the heat transfer coefficients on both sides of the heat transfer surface as a result of a single experience and subsequent approximation of thus obtained data for a set of experimental data. An approach to the solution of this problem based on classical methods of nonlinear parameterization. |
PUBLICATION ON INTERNET THERMO PHYSICAL PROPERTIES OF MATERIALS: PROBLEMS AND SOLUTIONS AT WORKING WITH TABLES e-mail: OchkovVF@mpei.ru Moscow Power Engineering University Keywords: thermophysical properties of materials, mathematical packages, Internet Abstract:
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INDUSTRIAL HEAT-AND-POWER ENGINEERING |
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HEAT TRANSFER ENHANCEMENT IN SHELL-AND-TUBE HEAT-EXCHANGE APPARATUS OF THERMO-TECHNOLOGICAL GAS SEPARATION SCHEME IN ETHYLENE PRODUCTION. REPORT 1 e-mail: isvetulia@mail.ru The Research Center of Problems of Power Engineering of Kazan Science Center of the Russian Academy of Sciences, Kazan Key words: intensification of heat exchange, discrete roughness, heat hydrodynamic efficiency. In work results of numerical calculations an intensification process of heat exchange are presented. Objects research are in casing tubular heat exchange devices thermo-technological schemes a stage gas of division in ethylene production, intended for cooling hydro carbonic weight by circulating water. As a way an intensification of heat exchange in trumpet channels heat exchangers it is used artificial turbulization a stream cross-section roll in the form a semicircle and a rectangular triangle of the first type. An ultimate goal researches is definition geometrical and constructive characteristics artificial turbulization, maximal values of criterion providing achievement heat and hydrodynamic efficiency for considered conditions. |
DEFINITION OF POTENTIAL OF SECONDARY POWER RESOURCES OF PETROCHEMICAL MANUFACTURE Muhametshina E.I., Shamsutdinov E.V. The Research Center of Problems of Power Engineering of Kazan Science Center of the Russian Academy of Sciences, Kazan e-mail: isvetulia@mail.ru Key words: energy efficiency, thermo-technological system, resource efficiency, structural analysis, mathematical simulation, balance thermo-technological scheme, exergic balance, secondary energy resources Abstract: |
POWER GENERATION STATIONS |
TECHNICAL AND ECONOMIC INDICES OF COAL MINI THERMOELECTRIC POWER STATION. Afanaseva O.V., Mingaleeva G.R. e-mail: mingaleeva-gr@mail.ru The Research Center of Problems of Power Engineering of Kazan Science Center of the Russian Academy of Sciences, Kazan Key words: firm fuel, mini thermoelectric power station, efficiency, the technical and economic analysis, capital investments, operating costs, payback period The estimation of technical and economic indicators is the integral stage of engineering and the analysis of efficiency of power objects. In offered work the technical and economic assessment of works of coal mini thermoelectric power station is carried out. On mini thermoelectric power station produced the by-product – the activated charcoal which is realized to foreign consumers. During calculations the resulted annual charges representing the sum of capital investments and operating costs are defined. Total capital investments develop of capital investments in separate units and the technical systems entering into the scheme. Operational expenses include a fuel component, expenses for repair, a wages worker and other costs. The time of recovery of outlay considered of coal mini thermoelectric power station capacity 8 MW makes 4,4 years |
MODELING AND ANALYSIS OF PROCESSES FOR CIRCULATING COOLING SYSTEMS OF POWER GENERATING STATIONS Chichirov A.A., Chichirova N.D., Galleev I.I., Murtazin A.I., Smirnov A.YU., Volkov M.A e-mail: pinpin3@yandex.ru Kazan State Power Engineering University Keywords: circulating cooling system of power generation station, coolers, deposit Modeling of circulating cooling system of power generation station is carried out in Kazan PGS-3. The mathematical models elaborated describing material resources accounting for physical-chemical processes. The method is suggested for calculation of both numbers and structure fallout. The analysis of stratum structure for the head- and hydro stressed pipelines of circulating cooling system is carried out. |
REGENERATION OF LOW POTENTIAL HEAT FLOWS OF THERMAL POWER PLANTS Sharapov V.I., Kubashov S.E. e-mail: sharapov@ulstu.ru, s.kubashov@ulstu.ru Ulyanovsk State Power Technical University Keywords: thermal power plants; low potential heat flows; gas, air colling systems; condensers Abstract: |
POWER AND MECHANICAL ENGINEERING |
MODELING CONTOUR LOADING IN FORK-JOINT BLADE AND TURBINE DISK Ilchenko D.V., Sitdikov R.A., Toporov D.V., Yarullin R.R. e-mail: ilchenkoboris@pochta.ru, axbt32@mail.ru The Research Center of Problems of Power Engineering of Kazan Science Center of the Russian Academy of Sciences, Kazan The stress strain state in a disk of the steam turbine are analysed with use of various ways of modelling of contour loading in the fork link of a disk and a blade. Calculations are carried out by three various techniques – analytical and to two numerical on a method of finite elements. Numerical techniques included direct injection modelling the distributed contour loading in fastening apertures and the solution of a problem in contact statement. As results of the researches advantages and deficiencies of each method are discussed, their comparison and the analysis are carried out. |
| OPERATION CONDITIONS AND DAMAGES OF POWER STEAM TURBINE ROTORS. Toporov D.V. e-mail: denistop5@mail.ru Research Center of Power Engineering Problems of the Russian Academy of Sciences Keywords: creep, low cycle fatigue, corrosion damages, phase transition zone, fatigue life Abstract: Operation damages of power steam generation equipment are considered. Wide-spread defects and factors limiting fatique life of power steam turbine rotors are represented and analysis of crack appearance in heatgeneration equipment elements are given.
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