The formulation of the problem of the spatial direct row blade optimization was considered. The verification of the using calculation method was performed. Also the results of the turbine guide row blade optimization that obtained by changing the geometrical parameters of profile in each section of blade without tangential bulk are showed.

Keywords:
spatial optimization, turbine blade, verification, initial blade form, optimal blade form.

Boіko A.V., Govoruschenko Yu.N., Barannik V.S. The spatial optimization of direct turbine row blode by changing profile in height. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 5-10.

The problem of estimation of kinetic energy losses for 3D flows with significant inlet cross-flow non-uniformity of total parameters and intensive mixing is considered. Using conventional techniques of losses calculation based on available and real heat drops is noted to result in large errors caused by inaccuracy in determination of adiabatic flow parameters for each flow trick. Several techniques for losses determination are considered. They are based on entropy increase in flowpaths and are free from the defect mentioned above.

Keywords:
kinetic energy losses, turbines, inlet non-uniformity, secondary flows.

Ershov S.V., Saki R. On the estimation of losses in turbomachinery flowpaths. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 11-18.

It is considered the flow of vapor in steam distribution system based on the numerical solution of Navier-Stokes equations. It is determined the defining characteristic of vapor flow. The Menter SST turbulence model is used. It is calculated the main features of the vapor flow through the screen and in the chamber, where the screen is installed.

Keywords:
calculation, flow of vapor, steam distribution system, turbine.

Kolyadyuk A.S., Shulzhenko N.G. Analysis of vapor flow through the screen regulatory valve turbine K-325 on the stationary mode works. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 19-23.

The experimental research of effect of polarity electric charge of wet steam on change of microhardness blanket of the steel was spent. It is revealed that in case cathodic polarisation of a surface steel by wet steam, microhardness of a surface decreases more than on 50 % over the range loadings on the indenter from 10 to 50 gramme. Air cathodic polarisation leads to microhardness increase.

Keywords:
microhardness, hydrogenation, cathodic polarisation, turbine blade.

Tarelin A.A., Surdu N.V., Nechaev A.V. Influence of cathodic polarization of steel surface in charged wet stream on change of her microhardness. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 24-34.

Based on the results of the turbine stage investigation with a small ratio Dср/l the operational modes of power consumption was considered. The dependences for power estimation, which is supplied on the compression of the working medium at low flow regimes was obtained.

Keywords:
turbine stage, streamline, small flow rate condition, stream compression, volume flow rate.

Shubenko A.L., Bystrickiy L.N., Goloshchapov V.N., Kasilov V.I., Kasilov O.V., Kozlokov A.Yu. Turbine stage operation in compressor mode. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 35-42.

In the inter-blade channel of the rotor cascade of axial turbomachine the relative state flow of ideal gas was examined. The flow was separated on layers by the stream-surfaces S1. Stream-surfaces do not have the axis of symmetry. The 3D-flow was reduced to 2D-flow without assumption that radial component of velocity and all derivatives in radial direction save the values from axial-symmetric decision on the stream-surface S2.

Keywords:
flowing pass of turbomachine, quasi-three-dimensional flow, rotor cascade, equation of continuity, momentum equation.

Subbotovich V.P. The flow through rotor blade cascade of axial turbinemachine on arbitrary stremsurface S1. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 43-48.

Results of numerical calculation of a flow in 3-dimensional impeller of the centrifugal compressor by the CFD methods with use of the software package of ANSYS CFX are presented. The technique of computer calculation of gasdynamic characteristics is given at change of a swirl flow in front of the eye of impeller, created by rotating blades of inlet guide vanes (IGV). On the basis of theoretical researches optimization of the law of regulation of the centrifugal compressor is performed. Conclusions are drawn on efficiency of use of IGV in front of the 3-dimensional impeller.

Keywords:
3-dimensional impeller, operation, optimization, golden section method.

Bondarenko G.A., Yurko I.V. Method of optimization gas dynamic characteristics for centrifugal compressor stage with inlet guide vanes. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 49-53.

During the operation time significant changes may take place in the metals of the basic parts (low-grade steel of pearlite class 15X1M1ФЛ, 20XMФЛ, 20XMЛ) is presented. The problem of operation extension over-standard should be solved on the basis of the results, gained in the process of the specially conducted service works including the investigation of the metal state and its resistance to the crack development.

Keywords:
high-temperature rotors, big capacities turbines, steel of pearlite class, problem of operation extension over-standard, specially conducted service works

Chernousenko O.Yu., Nikulenkova T.V. Complex scheme estimation of residual resource of rotor of steam turbine high power. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 54-61.

The method for determining operation life and durability indexes of structural elements of heat and nuclear power plants is proposed. The method is based on the mathematical modelling of the deformation and damage of structural elements to determine operation life for a given operating conditions, the results of which are handled by the methods of the theory of probability to determine the probability durability indexes.

Keywords:
useful life, durability measures, gamma-percentile life, mean life, heat exchanger tubes of the heat and nuclear power plants, creep, damage.

Romashov Yu.V. The method for determining operation life sand durability indexes of structural elements of heat and nuclear power plant. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 62-71.

In this work, a numerical study of the motion of the spatial flow in the flow of capsule hydro unit PLGK-25 by software complex FlowVision. A comparison of the results c similar values calculated by the two-dimensional method.

Keywords:
hydroturbine, capsule hydro unit, runner, flowing part.

Potetenko O.V., Drankovskiy V.E., Krupa E.S. Numerical study of spatial the flow in flowing of capsule hydro unit with software system FlowVision. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 72-78.

The results of studies of the dynamics hydraulic press brake CNC based on the developed mathematical model for working stroke bending sheet blank. Process improvement achieved by synthesis of nonlinear transducer on dynamic criteria.

Keywords:
press brake, synthesis of nonlinear transducer, mathematical model, working stroke, dynamic criterion.

Lure Z.Ya., Gasyuk A.I., Bulgakov V.A., Cehmistro L.N., Tyulparova M.A. Enhanced Workflow press brake hydraulic units by the synthesis of nonlinear converter. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 79-88.

It was proposed algorithm of the first stage computer-aided design flowing part of the impeller of a centrifugal pump, which based on fluid flow laws that are determined by the Euler equations, such us: equation of motion, energy-conservation equation, equation of energy transfer and continuity equation, and on the great experience of their application.

Keywords:
inverse problem, mathematical model, impeller, streamline, potential flow, vortex flow.

Kostornoy S.D., Bondarev A.O., Marchenko L.K. Automated design impeller of centrifugal pump. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 89-95.

The issues related to the problems of operating units, with high-pressure boilers steam output of 160 to 670 t/h, working in anthracite deterioration. The variants of the technical solutions to improve the reliability, durability and cost-effectiveness of these units.

Keywords:
Modernization, high-pressure boilers, anthracite lower quality furnace in gas-tight performance, reliability, durability and cost-effectiveness.

Efimov A.V., Kavercev V.L., Ryzhenko I.E., Garkusha T.A., Chernyak E.A. Characteristics of coal dust-pressure boilers, working on Ukrainian coals, and their perspective view of technical upgrade by installing a gas-tight furnace and other innovative solutions. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 96-101.

The article is devoted to experimental research of operating descriptions industrial prototype of air cooler turbogenerators with air-cooled. The method of conducting experiment is described and the results of the data which are got an experimental way processing of experiment are resulted. The analysis of the got dependences is conducted.

Keywords:
turbogenerator, air-cooling, tests, cooler of air.

Minko A.N., Shevchenko V.V., Gordienko V.Yu. The results of tests heat-exchange device with the improved operating descriptions for air cooling system turbogenerators. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 102-107.

The results of researches on distribution rationed of indexes of reliability in systems of hydrounits and pneumounits with use of methods of distribution of the requirements on reliability are given – proportional and in view of relative vulnerability of elements. The offered algorithms allow already on early stages of planning of the systems hydro- and pneumodrives to ration reliability indexes. Algorithms are resulted for the calculation of quantitative reliability indexes on the stage of planning.

Keywords:
reliability, hydropneumounit, probability of faultless work, intensity of refuses, method of distributing of norms of reliability, coefficient of vulnerability.

Fateeva N.N. To question of calculation of reliability of hydrounits and pneumounits. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 108-112.

Comparison of existing schemes of two variables expansion of function using undivided decomposition methods for synthesis of minimum hydropneumoaggregates schemes is executed. The expansion scheme choice algorithm that provides the least number of elements in case of equation realization is obtained.

Keywords:
hidropnevmoahrehativ synthesis schemes, undivided decomposition, residual functions, logic elements, pnevmoliniya, distributor.

Polushkin K.O. Hydropneumoautomatics schemes realization algoritnm. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 113-117.

The country fuel and energy resources production quantitative analysis, the electricity production and consumption analysis in different industries have been performed. The electrical energy consumption for a day has been considered as well as opportunities concerned with the application of time-differentiated tariffs for the public, as the most power-hungry component. The recommendations for energy resources usage improving for utilities have been developed.

Keywords:
fuel and energy resources, electricity, electrical appliances, graph of the electric capacity, users-regulators.

Malyarenko V.A., Scherbak I.E. Analysis of Ukrainian fuel and energy resources consumption and its rational use treatment. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 118-126.

It is suggested to prognosis of change of parameters of technological process of accumulation of energy on the basis of estimation of change of heat accumulation capacity.

Keywords:
technology, accumulation, decision-making.

Chaykovska E.E. Support for accumulation on decizion – maiking level. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 127-133.

On the basis of an information existing in the literature and results of own experimental researches the physical model of thermophysical processes in the pyrolysis heat generator proposed by author in offered.

Keywords:
steam generator, pyrolysis, kinetics, destruction of biomass, experiment.

Semeney A.R. Physical model of processes in pyrolysis type heat generator. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 134-141.

The methods and means of determining the reliability of heat supply of housing estate in a systematic mathematical modeling of thermal-hydraulic processes taking into account the mutual influence of elements and the influence of external factors are building. Simulation of thermal-hydraulic manifold regime showed that it is very difficult, has low reliability and system to be reconstructed.

Keywords:
heating system, reliability, hydraulic design, thermal design, system analysis, mathematical modeling.

Ganzha A.M., Marchenko N.A., Pidkopay V.M. Determine of reliability of heat supply of housing estates based on the system of mathematical modeling of thermal hydraulic processes. NTU «KhPI» Bulletin: Series «Power and Heat Engineering Processes and Equipment». 2013. No. 14. Pp. 142-146.