HEAT-AND-POWER ENGINEERING FUNDAMENTALS

ANALYTICAL AND EXPERIMENTAL STUDY OF THE INTEGRAL AERODYNAMIC CHARACTERISTICS OF LOW-WIND TURBINES // Transactions of Academenergo. -2013. -N 2. –P. 7 – 19.
M.Zh. Valiev, V.V. Zherekhov
e-mail: valiy1989@mail.ru , zherehov.agd@kstu-kai.ru
Kazan National Technical University (KAI)
Keywords: wind energy, wind turbine, performance coefficient, theory of high lift system, analytical calculation, experimental study.
Abstract
This paper proposes a new wind turbine concept designed for low-winds. The design is studied using a combination of wind tunnel experimentation and aerodynamic theory to highlift the potential benefits of this concept. After processing the experimental results, and after comparison with theory, the optimal conditions for the operation of the turbine are identified. Experimental and theoretical results suggest that the design is sound and can offer a realistic alternative to the conventional horizontal axis wind turbines. In addition, the proposed turbine has good power efficiency at low wind speeds that makes is suitable for deployment in areas not yet favoured by wind farm developers.

DEVELOPMENT GUIDELINES DETERMINING THE INTENSITY HEAT EXCHANGE IN PIPE ELECTRICAL EVAPORATORS MIXTURES LIQUEFIED PETROLEUM GASWITH SOLID INTERMEDIATE ENVIRONMENT // Transactions of Academenergo. -2013. -N 2. –P. 20 – 30.
A.P. Usachev, A.V. Rulev
e-mail: usachev-ap@mail.ru , nautech@inbox.ru
Saratov State Technical University named after Yuri Gagarin
Keywords: heat transfer rate, liquefied petroleum gas, propane-butane mixture, pipe electric evaporator, solid intermediate medium, tubular heaters, aluminum casting, thermal resistance
Abstract
Objective: to determine heat transfer in tube evaporators electrical liquefied petroleum gas with a solid intermediate environment based on aluminum. However, in the known literature, such recommendations are not available. In the article on the basis electrothermal analogy derived equations to determine the thermal resistance of the transfer heat from a group of tubular electric heaters to outer surface evaporator coil pipeline through an array of solid intermediate environment of aluminum. A set calculated dependences for coefficients heat transfer flow tube evaporator vapor-liquid propane-butane mixture liquefied petroleum gas, taking account of changes flow regimes, and the dryness propane content in the liquid and vapor phases the mixture. According to obtained values of thermal resistance and heat transfer coefficients flow tube evaporator heat transfer coefficient is determined.

POWER GENERATION STATIONS

PROBABILISTIC SAFETY ASSESSMENT NPP IN THE STATES OF DE-ENERGIZING BY RESERVE OWN NEEDS BASED HYDROGEN CYCLE // Transactions of Academenergo. -2013. -N 2. –P. 31 – 40.
R.Z. Aminov, V.E. Yurin
e-mail: oepran@inbox.ru , urin1990777@bk.ru
Saratov Scientific Center of the Russian Academy of Sciences
Keywords: nuclear power plant, the hydrogen cycle, an additional steam turbine, the state of de-energizing, the probabilistic assessment, power supply of NPP auxiliaries.
Abstract
In this paper we propose the option to install the NPP permanent additional steam turbine low-power, which, combined with a hydrogen complex can increase the reliability of power supply of NPP auxiliaries in the state of de-energizing, and increase agility NPP power unit. Probabilistic safety assessment NPP was carried in the states of de-energizing by used standing turbines that working to improve the maneuverability of nuclear power plant and reserve diesel generators can significantly increase the reliability of NPP auxiliaries and to reduce by orders the probability of accidents with fissile core damage at the communications breakdown with the power grid.

SPOUTING BED IN HETEROGENEOUS PROCESSES OF MODERN FUEL CYCLE TECHNOLOGIES TPP. PART 1. DESULFURIZATION AND GASIFICATION OF SOLID FUEL // Transactions of Academenergo. -2013. -N 2. –P. 41 – 50.
N.D. Chichirova, M.G. Ziganshin
e-mail: ndchichirova@mail.rundchichirova@mail.ru , mjihan@mail.rumjihan@mail.ru
* Kazan State Power Engineering University
** Kazan State University of Architecture and Engineering
Keywords: thermal power plants, solid fuel, clean technologies, innovative projects, spouting bed, flue gas desulphurization, gasification of solid fuels
Abstract
Translation of thermal power plants in clean technologies grizzle using (such as Clean Coal Technology), provides a strategy of Russia until 2020, will require creative solutions based on innovative approaches to all elements of the task ahead. Plants with spouting bed can be used in all stages of preparation and combustion of solid fuels. The first part shows the feasibility of using spouting regime in the process of gasification and desulfurization, including additives, sulfur binding stage of coal combustion in the furnace steam generator power station. The results of research can improve the reliability and ease of operation of energy facilities.

SPOUTING BED IN HETEROGENEOUS PROCESSES OF TPP MODERN FUEL CYCLE TECHNOLOGIES.. PART 2. COMBUSTION OF SOLID FUELS. PROCESSING OF EMISSION THE LOW SOURCES // Transactions of Academenergo. -2013. -N 2. –P. 51 – 64.
N.D. Chichirova, M.G. Ziganshin
e-mail: ndchichirova@mail.ru , mjihan@mail.ru
* Kazan State Power Engineering University
** Kazan State Architecture and Construction University
Keywords: thermal power plants, coal combustion, clean technology, gushing layer, greenhouse gas, sulfur hexafluoride, isothermal emission, low sources.
Abstract
Considered spouting bed apparatus that can be used in all stages of preparation and combustion of solid fuels, neutralization number of TPP emissions. The second part of the results of theoretical and experimental research on the characterization of characteristic stages gushing granular materials and the process of chemisorption of halogenated greenhouse gas (sulfur hexafluoride) from spouting adsorbent. The results of research will get reliable parameters spouting polydisperse material necessary to the practice of design and operation of devices with spouting layer for various purposes.

POWER – AND – MECHANICAL ENGINEERING

CONSTRAINT PARAMETERS IN FRACTURE MECHANICS (REVIEW) // Transactions of Academenergo. -2013. -N 2. –P. 65 – 78.
N.V. Boychenko
Keywords: constraint, T-stress, in-plane and out-of-plane constraint, high order terms, J-T approach, J-Q approach, amplitude factors, triaxility parameter, constraint factor
Abstract
The basic parameters for the constraint effects analysis in the 2D and 3D bodies are presented in this paper. One- and two-parameter approaches of the stress-strain state in the elastic-plastic region of the crack tip (J-T approach, JQ rule, J-A2 method) are considered. The best known ways review of the constraint effects evaluation in three-dimensional solids is carried out.

STRESS FIELDS AT THE INCLENED CRACK TIP FOR SPECIMEN DIFFERENT GEOMETRIES // Transactions of Academenergo. – 2013. – N 2. – P. 79 – 90.
V.N. Shlyannikov, S.Yu. Kislova, A.V. Tumanov
Keywords: inclined crack, stress fields, mixed mode
Abstract
Stress strain state fields analysis of the incline crack tip for different specimen geometries under plane stress and plane strain are conducted. Subjects for studies are cruciform specimen under biaxial loading, center cracked plate and compact tension-shear specimen. By means different combinations of loading conditions and initial straightline crack orientation realized full range of mixed mode fracture from pure mode I to pure mode II. On the base of numerical solutions the influence of initial crack angle, relative crack length and specimen geometries on the angular stress distribution are established. The numerical data for elastic-plastic stress fields related to the complete range of mixed mode loading are compared with theoretical predictions. For comparison purpose the reference fields for plane mixed mode problems governing the asymptotic behavior of the stresses and strains at the crack tip are developed in a power law elastic-plastic material. Discrepancies in dimensionless angular distributions have been observed in various specimen configurations.

THE DISPLACEMENT FILTER FOR MIXED MODE CRACKS // Transactions of Academenergo. -2013. -N 2. –P. 91 – 102.
V.N. Shlyannikov, A.V. Tumanov
e-mail: shlyannikov@mail.ru , tymanoff@rambler.ru
Keywords: crack tip displacement, strain-stress state, finite element analysis
Abstract
The method for displacements filtering after finite element analysis for solving asymmetrical elastic-plastic fracture mechanics problems is developed. The necessity of taking into account the deformed state of the crack surfaces in the form of mathematical notch and given the finite radius of curvature of the crack tip. The application of the algorithm is related to the calculation of the plastic stress intensity factor.

ECONOMICS, ECOLOGY, INNOVATIVE TECHNOLOGIES AND PROCESSES IN POWER ENGINEERING

MANAGEMENT OF COMPETITIVENESS FOR ENGINEERING COMPLEX // Transactions of Academenergo. -2013. -N 2. –P. 103 – 108.
I.G. Samigullin, L.N. Safiullin

Abstract
At the present stage of development of economic relations, increasingly tougher competition in the domestic market and the world. It is necessary to note the relationship between the competitiveness of the enterprise and the state of its economic situation. Therefore, for an enterprise that seeks to break into the world market, the decisive factor is the management of competitiveness.