the article presents experimental studies of a low-power boiler with a furnace of a high-temperature fluidized bed with recirculation of outgoing gases in stationary and transient modes of operation. The experimental installation of the boiler KVP-1,74 WKS with recirculation of outgoing gases is represented and described. The results of experimental studies of the dependences of the coefficient of excess oxygen at of the volume of the recirculation of exhaust gases of the boiler KVP-1,74 VTX at nominal and partial loads, based on the percentage of fuel saving of the boiler from the amount of recirculation of exhaust gases of the boiler KVP-1,74 VTX at nominal and partial loads boilers, graphs of transient processes in boiler "KVP-1,74-VTX" with recirculation of flue gas when changing the fuel consumption, GRAPHS of the comparison of transients in the boiler "KVP-1,74-VTX" with recirculation of flue gas when changing fuel consumption.

Keywords: high temperature fluidized bed, exhaust gas recirculation, experimental studies, automation system

A new parallel programming language is being developed. A feature of this language will be that, based on the developed algorithm for solving any problem, it is possible with minimal effort to generate an effective parallel program code for different computation models. Such a parallel metalanguage is based on the dataflow computing model with a dynamically formed context. The graphic version of the metalanguage has the advantage of a clear presentation of information and is much better suited to the nature of human perception. The concept of graphical programming consists in compiling a program from a set of certain objects and connecting them together according to special rules. In addition, each of the objects and the connection between them in the form of a directional line have a set of properties and attributes, which, when compiled, convert them into an object with the necessary logical load corresponding to the program algorithm being created. The article provides a graphical representation and description of such metalanguage elements as “token”, “standard node” and “single-port node”, “node with three standard inputs” and “group symmetric node”, as well as program structures: “group”, “cycle” and ""module"". A whole series of parallel programs was created using a graphical version of the metalanguage.

Keywords: graphical representation, metalanguage, parallelization of computations, dataflow computing model

There are various programming models for high-performance computing systems. Each of them has its own requirements for the structure and properties of the algorithm, which force the rewriting of the algorithm to match them. One solution to this problem is to move to a new parallel programming paradigm. The new metalanguage of parallel programming will give the opportunity to create a mathematical description of the algorithm, and then derive from it effective programs for various computing platforms. The article describes the approaches to the translation of the program into its own basic subset of the parallel language of the parallel dataflow computing system (PDCS). The basic concepts of the metalanguage are defined. The limitations of the basic subset of the PDCS parallel language are given. It describes the options for translating multi-input nodes and program structures (groups, cycles and branches). Translation of the program on the metalanguage into the basic subset of the PDCS parallel language will further help to solve the problem of translating the metalanguage into languages of other architectural platforms.

Keywords: parallel programming, metalanguage, dataflow computing model, translation from metalanguage

Modelling and experimental research of narrow band filter on opposing rods was made. Center frequency is 1010 MHz. In the far zone the filter has blocking more than 100 dB. The pass band width on the Level minus 3 dB from the maximum is 13 MHz, and losses in the pass band are 8 dB.

Keywords: Filter on opposing rods, modelling, experiment, amplitude-frequency characteristics, pass band

State programs aimed at the development of breeding and seed production in Russia require research related to the creation of new intelligent technical systems implemented in breeding equipment, in particular in self-propelled breeding planters. As a promising direction, it is proposed to develop an intelligent technology for sowing seed and implement it on the basis of a self-propelled seed drill.

Keywords: Selection, technology of intellectual seeding, self-propelled seeder, import substitution

The paper explores the use ofpolycarbonate modular systems in the construction of translucent building envelopsfor sports facilities. Basedonthecomparisonofthelighttransmissionperformance involving the most widely used translucent materials, it is easy to see that they are inferior to nearly all other materials. Certain characteristics of cellular polycarbonate sheets are summarized intabularform depending on the number of layers and the cellular structure. Further emphasis is made on the fact the existing lock connections for assembly of large-scale planar structures are not always consistent with the constructability and occupational safety requirements.

Keywords: polycarbonatemodular systems, cellular polycarbonate, light transmission, cellular structure,lock connection

The article presents the solution of the technical and economic efficiency of capital investments in the reconstruction of the heat supply systems of municipal and departmental entities of the Russian Federation using the criteria for choosing a rational reconstruction option. The economic-mathematical model was developed using modified Cobb-Douglas two-factor production functions in relative coordinates.

Keywords: heat supply system, high-temperature fluidized bed, capital costs, operating costs, economic and mathematical modeling, production functions

The question of economy of metal at production of building designs is considered. Measures for the organization of effective production in the current projects of high-rise and long-span buildings are proposed. Measures of increase of efficiency of construction are considered

Keywords: organization of construction; economy of construction, production of building materials

The concept of “partial failure” used in practice is analyzed as a state in which the possibility of continuing the operation of a technical device remains. It is argued that partial failures are widespread in the operation of technology, but unlike full failures, under which the continuation of work becomes impossible in any mode, not fully understood. A number of reliability indicators are proposed that take into account the specifics of partial failures and the possibility of continuing work when they occur. Attention is drawn to the fact that the decision to continue the operation of the device in the presence of a partial failure is associated with risks. The essence of the risks lies in the possibility of receiving damage in the form of further deterioration of the technical condition of the partially failed device. However, in many cases such a risk may be justified. The task of deciding on the continuation of the operation, in the conditions of a partial failure is a complex task of system analysis. Its solution will require the use of complex models compiled using modern methods of mathematical descriptions and research.

Keywords: partial failure, reliability theory, reliability indicators with partial failure, risks of continued operation, making decisions on continuation of operation

The modern problem of building of big cities consists that there is almost no place left for the free building. Therefore it is necessary to carry out so-called "pointed building" when construction is conducted in the constrained conditions. At the same time very often construction sites get to an area of coverage of the subway that causes particular difficulties at construction of constructions in deep ditches.

Keywords: modeling, stress-strain, tunnel, subway, deep ditch, pointed building, ditch protection

The paper contains an analysis of the results of experiments on obtaining radiative structures based on gallium antimonide, formed by the method of thermal melt migration in a semiconductor matrix. The epitaxial process modes within the selected range were optimized for such parameters as the wavelength corresponding to the fundamental transition, a small lattice discrepancy, a small discrepancy in the coefficients of thermal expansion of the growing TP and the matrix. An original effect is described - an increase in the solubility of the Bi content in solid solutions, isoperiodic binary compounds A3B5 under conditions of a gradient temperature field. This effect allows a wide variation in the optical parameters of the element base of instruments based on solid solutions of GaSbBi / GaSb. The mechanisms of the generation of dislocations in a crystallized solid solution and the features of electrophysical and photoelectric parameters are analyzed. A structural solution of a light-emitting diode with strip geometry is proposed.

Keywords: solid solutions, recrystallization, gradient liquid-phase epitaxy, thermomigration, indium antimonide-bismuthide, melt thickness, temperature gradient, components, growth coordinate, epitaxial layers

In this paper, the modeling of phase equilibria in multicomponent systems of A3B5 compounds was carried out and the compositions of the liquid phase equilibrated with a given solid solution were calculated. A model of excess thermodynamic functions is used, which takes into account the formation of associates in the melt near the solidus temperatures. The developed algorithm allows solving a direct problem (in which the input parameters are the growth temperature of the layers and the composition of the solid phase corresponding to the expected instrument characteristics) and the inverse problem (the growth temperature and composition of the solid solution are sought for the given liquid phase). The limiting concentrations of the alloying components, arsenic and bismuth, are determined. The structural and electrophysical characteristics of multicomponent semiconductor A3B5 heterosystems are discussed, the solid solutions of which crystallize from the liquid phase in a gradient thermal field. The mechanism for introducing impurities into the lattice of epitaxial layers of multicomponent solid solutions is described for the first time. With an increase in the thickness of the crystallizable film, the thermodynamically equilibrium substitution by antimony bismuth atoms is completed and the introduction of Bi atoms into the interstices takes place. The interaction of neighboring atoms with the valence electron shells of Bi becomes more symmetrical, which causes an increase in concentration. The concentration of film defects near its rear surface also increases. The obtained values of electrophysical parameters make it possible to draw a conclusion about the instrumental suitability of the materials under study.

Keywords: solid solutions, mesostructure, antimonide, alloying, liquid phase, phase transformations, binary compounds, associates, lattice constant, multicomponent systems

In the construction and use of software technologies, including roads, using GIS and CAD technology. We can also use technologies without data to work with attribute information. GIS is used to manage a large number of different-scale information on construction, reconstruction,etc.Any construction consists of several stages, including the construction of roads, starting, as we see from the planning, then the design and coordination of objects and putting it into operation. GIS during construction is considered in conjunction with all stages., at what first analyze the location of the object on the map. GIS in construction is one of the most important links in the overall planning system.

Keywords: construction, geographic information systems, reconstruction,management, stages, planning, digitization, route, facilities, road

The article discusses the application of the theory of qualimetry and product quality management for the creation and operation of piggyback transportation in Russia. Their implementation requires a comprehensive study of technical, technological, organizational, investment and legislative issues. The specificity of the provision of this transport service by rail in the regulatory aspect is shown. A multilevel system of factors influencing the quality of the process of railway piggyback transportation has been formed and substantiated. The first level factors that have the most significant impact include: personnel, materials, equipment, technology, organization and the external environment. These factors characterize the actions of production personnel, material support, the state of technical means and mechanisms, the technologies used, the managerial component, as well as the external environment in which piggyback transportation is carried out. Structural grouping of factors is presented in Ishikawa diagram. Three characteristics of the process quality of piggyback transportation are highlighted - safety, timeliness and cost effectiveness. The use of factors allows you to create a range of quality indicators and methods for their evaluation, as well as to develop measures to improve the quality of transport.

Keywords: transport, piggyback, piggyback traffic, transport service, process quality, factor, Ishikawa diagram

The physical process features at the point of contact of the electric rolling stock current collector and the contact wire in the system of traction power supply of DC Railways are considered. The choice of parameters of the combating icy frost formations on the wires of the contact network by melting ice method is justified

Keywords: physical process, an electric arc, melting of ice, the estimated coefficients, the choice