In modern construction, the task of improving the energy efficiency of urban-type buildings is becoming increasingly important, since urbanization increases the volume of energy consumption. When solving issues of energy efficiency of high-rise buildings, it is necessary to take into account such factors as the location of the object, orientation to the cardinal points, functional purpose, volumetric-spatial and engineering solutions to save energy, reduce heat loss and create comfortable conditions inside buildings and in the local area ... In part, these problems can be solved by optimizing the geometric, technical, including the heat engineering parameters of the building envelope, paying attention to the fact that their characteristics must be changed depending on specific climatic factors. The article analyzes several high-rise buildings in the city of Moscow. As an example, calculations have been performed and graphs of temperature and wind speed changes along the height of one of the buildings are presented. An increase in wind speed and a decrease in temperature create special conditions that affect the heat loss of high-rise buildings, which must be taken into account when thermal protection of external enclosing structures.

Keywords: wind, buildings, structures, landscaping, space, climate, region, analysis, landscape, aeration, ecology

Applied photogrammetry systems, which act as measuring instruments, are often influenced by the external environment and operating conditions, which determine the accuracy of the results. In this regard, the problem of dynamic adjustment of algorithms for these changing conditions arises. To avoid an increase in the likelihood of human error and to reduce the requirements for personnel qualifications, you can resort to the tools of intelligent systems. For these purposes, the development of appropriate components is required, including machine learning tools. This article proposes a method and procedure for machine learning of the photogrammetric algorithm based on the observation of operator actions and a system of production rules.

Keywords: inductive learning, machine learning, photogrammetry, pattern recognition, photogrammetry, forestry, pipe industry, measurement, mobile app, automation

The decentralized electric power supply zone occupies about 60-70% of the territory of the Russian Federation. Electric power supply here is carried out using electric generator sets with diesel drive engines. In combination with the difficult logistics of fuel and lubricants materials delivery, this leads to a high prime cost of electricity energy generated. In the capacity of a measures to the costs of electricity reduction, renewable energy sources are used, while maintaining diesel generation as a guaranteed supplier of electricity. Renewable energy is characterized by significant stochastic fluctuations. Based on experimental data, the article shows that the daily load curves of small settlements contain a significant stochastic component, which greatly exceeds the seasonal, daily, and technological components in amplitude. The purpose of this work is to substantiate the structure and parameters of a hybrid energy storage device (HESD) for the synthesis of electrical power generation complexes using renewable energy sources. Spectral analysis using the window Fourier transform is used as a tool. It is established that the energy approach to the choosing of HESD components requires N types of electric energy storage devices, which differ in the ratio: the permissible frequency of the charge-discharge cycle to the cost of the component. As a criterion for choosing the structure and parameter values of a hybrid energy storage device, an estimate is proposed for the levelized cost of electricity (LCOE).

Keywords: hybrid energy storage, electrotechnical complex, renewable energy, daily load curve, spectral analysis, Fourier series

In this paper, we consider a modification of the algorithm and software implementation of the prototype of a discrete-rotary slicer for preparing 3D printing on multi-axis printers, which allows you to prepare printing for a larger number of types of product models compared to the original algorithm and software prototype. An approach is proposed that provides for the choice of one of several secant planes at certain steps of constructing a layer-by-layer model. The software prototype was refactored. The results of the prototype work are presented, showing the efficiency of the proposed approach. Original protoptype is more constrained with the model types it can process compared to proposed one. Though further investigation of the proposed approach have to be done as well as introduction of parallel implementation of different sectant planes processing.

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

The article is devoted to improving the processing of radon flux density measurement data using mathematical processing. The article considers the influence of construction works on the radon flux density (RDP) indicators. for the purpose of the study, real measurements were taken at a mining and processing plant in the volgograd region. The article presents the construction of histograms and frequency polygons for measurements performed at different stages, as well as graphs of the empirical distribution function of a random variable. They clearly showed the impact of construction, the hypothesis of the influence of clay soils on the radon output from the soil was confirmed, namely, it was proved that the permeability of the near-surface layer of soil is one of the key factors determining the spatial PPR within homogeneous areas, that is, the permeability of near-surface deposits is one of the leading factors determining the distribution of PPR. analysis of the obtained results allows us to conclude that there is a correlation between the calculated data obtained and the data obtained at the measurement input, i.e. relationship of two or more random variables.

Keywords: radon, pollution, ionizing radiation, engineering surveys, random variable, histogram and frequency polygon, empirical distribution

The article offers schemes and models that allow using formal parameters and procedures to expand the capabilities of cognitive modeling and increase the level of adequacy of decisions made based on the results of modeling. The paper presents various variants of modeling schemes, which allows the researcher to perform a more versatile analysis of the system, including the analysis of dynamic effects, as well as the selection of parameters of control actions that provide the desired level of system response.

Keywords: dynamic influence, control, simulation, formal cognitive model, formal neurocognitive network of f-euroconcept

The results of the analysis of quality parameters of building materials used for insulation of walls of residential buildings are presented. The problem of increased consumption of thermal energy for heating needs is identified, the solution of which is to increase the thermal characteristics of the enclosing walls of buildings by means of their insulation and protection by the system of a hinged ventilated facade.

Keywords: Hinged ventilated facade, thermal characteristics, influencing factors, energy efficiency

The water recreation industry is actively developing. An individual pool at home is also not uncommon for a long time, because everyone wants to live in comfortable conditions. Modern country houses place the pool on the ground floor of the premises on the plot next to the house. Despite the financial costs and time for maintenance, the health benefits of the pool, as well as the variety of leisure activities through taking water procedures or playing with children, are a very powerful argument in order to arrange a pool at home.The number of pools is increasing and the number of pools built with defects is also increasing. it may be because use low-quality construction materials and reduce their volumes, perform work by unskilled employees, violate the requirements of construction documents of the project. therefore it is necessary to carry out construction and technical examination.

Keywords: construction, swimming pool, construction and technical expertise, regulatory documentation, defects

The paper considers the characteristics of cloud convection obtained in the course of computational experiments on the basis of a three-dimensional physical and mathematical model of convective clouds, which takes into account in detail the microphysical processes of nucleation, condensation or sublimation of water vapor, coagulation and accretion of precipitation particles, accumulation of volume electric charges, and an increase in the electric field strength. clouds due to charge separation processes occurring during the rapid freezing of large supercooled drops, accretionary growth of cereals and hailstones. Based on the data of numerical modeling using the noted model, the location in the volume of the microstructural parameters of thunderstorm clouds (water content and ice content), space charges, electric field strength, radar reflectivity in the centimeter range, and other parameters at fixed times of cloud evolution was investigated.

Keywords: convective cloud, cloud microstructure, cloud electricity, numerical three-dimensional model, radar reflectance, electrical coagulation

Recognition of radiation from celestial bodies by technical means is an important task in the orientation of spacecraft. For a device that is part of the Earth orientation device, a variant of modeling an electronic signal amplifier received from a pyroelectric sensor is studied. On the recommendation of the developers, the properties of trans-impedance operational amplifiers were studied, and suitable coefficients for the negative feedback circuit were selected. The type of output signal of the model is studied in comparison with the recording of values taken from a real photodetector. The preferred design of the model in the Matlab Simulink environment is shown – a model defined by an electrical circuit using the Simscape Electrical library.

Keywords: simulation of electric circuits, space orientation, photodetecting device, transimpedance amplifier, optoelectronic devices, space instrumentation

Lignin is a natural polymer material, one of the main components of wood and is a renewable resource. The current trends concerning the methods of oxidation of hydrolysis lignins and the use of oxidation products are considered. Lignin oxidation processes are mainly aimed at obtaining macromonomers with a high content of functional groups and at obtaining low molecular weight oxidation products. A significant group of research is associated with the development of processes for the production of polyols used for the synthesis of polyurethane foams. In view of the insolubility of hydrolysis lignins in acidic media, the reactions of their modification to obtain highly reactive polymeric ingredients are expediently carried out in acids. Electrochemical oxidation in acidic environments allows for multiple use of electrolytes and is energy-consuming to young.

Keywords: renewable resource, industrial waste, hydrolysis lignin, oxidized lignin, hydroxyl groups, macromonomers, low molecular weight products, chemical oxidation, catalysis, electrochemical method, resource saving

The paper argues for the relevance of using volumetric modular units (VMU) in construction, especially in building temporary field camps. Despite a high installation technology intensity, the use of VMUs is said to demonstrate a low technology intensity in terms of transport operations. In order to ensure a high transport flexibility for temporary settlements, collapsible volumetric modular units are suggested as a potent solution.

Keywords: modular construction, assembly and transport adaptability, collapsible construction

This article presents the results of studies of modes of regulation of heat energy supply to the network. Analysis of the existing (traditional) mode of weather regulation of heat supply to the network revealed a number of shortcomings, incl. low period of operation of boilers in effective modes. The proposed mode of supply of heat energy from the network will ensure a long-term efficient operation of the boiler units. It optimizes the consumption of heat energy for auxiliary needs by significantly reducing the number of starts of boiler units.

Keywords: boiler unit, temperature schedule, specific gas consumption, heat output, weather regulation

The article investigates the physical and mechanical properties of fine-grained fiber-reinforced concrete with metal, polypropylene and polyamide fibers, using Portland cement, hyperplasticizer. Comparison of strength characteristics of fiber-reinforced concrete made using metal fiber, polypropylene and polyamide fibers is carried out. A technical and economic comparison of the efficiency of using fibers of various origins has been made. According to the cost calculations, the use of polyamide fibers is cost-effective, since the cost of materials is lower than the cost of fiber-reinforced concrete materials based on polypropylene fibers of this composition.

Keywords: fiber concrete, hyperplasticizer, fiber, microsilica, tensile strength, nature of destruction, mechanical property, polypropylene fiber, polyamide fiber, cement, reinforcement, adhesion, monolithic structure, cost

This article presents the results of the analysis of factors influencing the burner device of heat generators, as well as methods for their selection. The results of an experimental study of the dependence of the efficiency of heat generators on the operating power of burners are presented. Recommendations have been developed for choosing a heat generator and a burner.

Keywords: heat generator, burner device, Gorenje mode, operating power, heat balance