SolidWorks Software Package Research Articles

Methodology for determining the heat distribution in disc brakes of mine hoisting machines

Purpose. To study the course of heat phenomena in disc brakes using modern computing systems in order to determine and substantiate the operating parameters for the hoisting machine components. Methodology. The research uses software packages, with the help of which a computational-theoretical apparatus is developed for heat mode modeling processes. In particular, the mentioned function is used in the SolidWorks Simulation software with the ability to evaluate the errors of the calculation results. Findings. In the course of the research, the dependence of the hoisting machine disc brake performance on the operating parameters of its components was determined. The research has led to a better understanding of the heat transfer processes in disc braking devices, as well as the ability to study the friction response of various materials and determine optimal parameters that help improve the performance of braking systems. The effectiveness has been proven of the proposed method for analyzing the heat distribution processes of the mine hoisting machine drum components under the influence of operating and emergency braking modes. Originality. For the first time, a methodology for calculating the heating temperature distribution along the brake rim plane during a safety stop has been developed and substantiated. A method has also been developed for determining the temperature field arising under steady-state heating conditions, which occur after repeated operating braking and cooling of the device. In this case, when using the formula for determining the temperature on the brake rim surface, the sample length, the relative velocity between the friction components and the heat flow distribution coefficient are taken into account. The brake disc geometric model developed in the SolidWorks software package makes it possible to study the temperature change on the device rim in real time. Practical value. The proposed design improvement based on the research results of heating processes should improve vehicle safety. The cost of braking systems is expected to be reduced through the use of optimal materials and production technologies. The software methods for modeling and analyzing the temperature influence on brake discs of the Mine Hoisting Machine (MHM) have been improved. Based on the research results, recommendations have been developed for the optimum braking process of machines in various operating conditions.

Results of experimental development of a laboratory water distillation installation based on a heat pump and a photovoltaic panel

Modern technologies and the continuous rise in water consumption require efficient and environmentally friendly methods of its extraction. According to the energy development strategy of the Russian Federation until 2035, the use of alternative energy sources in industry is a priority task for production. The use of renewable resources to produce distilled water for the needs of enterprises is becoming increasingly important. The innovative technology of a laboratory installation, combining water distillation using a heat pump and a photovoltaic panel, allows not only to obtain purified water, but also to heat the coolant before chemical purification. To create a laboratory stand, it is necessary to study the operating principles of the installation, divide the device into units: the main stand and the vacuum distiller, then model a three-dimensional image of each part of the complex in the SolidWorks software package. Based on the obtained models, a functional diagram of the complex is developed to obtain a coolant of the given parameters, and an algorithm is compiled for predicting the temperature of the heated water in the heat pump. The obtained installation test results are processed, and compared with theoretical data from tables of refrigerant properties, and a conclusion is drawn. The technology for producing purified water is aimed at replacing imported technologies and using renewable energy sources. The development of technologies for producing clean water is a priority for the development of the Russian energy sector. The results obtained indicate the potential of the laboratory installation for use in various areas where a reliable and environmentally friendly supply of distilled water is required, for example, in coastal areas for industrial facilities or agricultural enterprises.

Вплив детонаційної хвилі на перерозширений надзвуковий потік газу в со-плі

This paper proposes to use the detonation process to solve the problem of controlling highly maneuverable flying vehicles. The goal of the work is to study a new way of the thrust vector control of a rocket engine using the effect of a detonation shock wave on the gas flow in the nozzle. It is known that the method of thrust vector control by gas injection into the supersonic nozzle area of a rocket engine features one of the lowest losses of specific momentum and a high response speed and produces a significant lateral force. However, for the current level of rocket technology, there is a need to improve these characteristics. Detonation is considered as a method to intensify processes that affect the main gas flow and produce a lateral force. Its features make it possible to develop a system for pulse trajectory correction. In order to study the features of such a system, experimental studies of the detonation wave effect on a supersonic nozzle flow were conducted. A nozzle model and a gas generator for initiating a detonation wave interacting with the main supersonic air flow were developed and made. In the course of experiments, the effect of separation of the main flow from the nozzle wall by the detonation wave during the nozzle operation in the overexpansion mode was revealed. The duration of this effect was much longer than that of the detonation product effect on the main air flow in the nozzle, thus allowing it to be used in the development of a new thrust vector control method. To better understand the experimental results, a numerical simulation of the detonation wave propagation in a supersonic flow was carried out for the test conditions. The simulation was carried out in a non-stationary 2D formulation using the Solid Works software package. The goal of the simulation was to estimate the flow structure and the value of the relative lateral force produced by the change of this structure during detonation product injection into the supersonic nozzle area. The time evolution of the pressure field was obtained. The relative lateral force produced by detonation product injection into the supersonic air flow in the nozzle was determined. The presented features and method of jet engine thrust vector control may be used in unmanned systems operating in a wide range of speeds.

Analysis of the stress-strain state of a three-dimensional model a shoulder hemiarthroplasty after changing the greater tubercle position on the shoulder

Background. The greater tubercle position change in shoulder hemiarthroplasty is of great importance for the shoulder joint contact surfaces’ stress-strain state (SТS). One of the important conditions for restoring a full range of motion in the shoulder joint after hemiarthroplasty and a longer service life of the endoprosthesis is the anatomical location of the greater tubercle. The purpose was to develop a three-dimensional model and study the STS of elements of the shoulder joint and implants of a hemiarthroplasty after changing the greater tubercle position on the shoulder. Materials and methods. The SolidWorks software package was used in order to construct a simulated 3D model of the shoulder joint, taking anatomical and anthropometric data into conside­ration to make the model as close to the real shoulder joint as possible. The ANSYS software package was used to calculate the shoulder joint models of the total load vector at different positions of the total load vector, depending on the greater tubercle of the humerus position. Results. The analysis of the shoulder joint mo­del elements’ STS with different greater tuberosity positioning and a shoulder abduction angle of 60° showed that the maximum increase in stress values is observed on the glenoid cavity subchondral bone when the greater tubercle of the humerus is transposed by 1 cm anterior — in 3.4 times, σmax up to 4.02 MPa. Moving the big tubercle by 1 cm distally is an optimal position in which the subchondral bone of the glenoid cavity undergoes minimum stress and deformation forces. Conclusions. The change in pressure on the contact surfaces is significant when changing the position of the greater tuberosity, which will undoubtedly affect the volume and range of motion in the postoperative period. Taking into account the data of the stress values on the contact surfaces obtained from our simula­ted 3D computer model of the shoulder joint allows improving the quality of preoperative planning and improving shoulder function and possible complications in the postoperative period.

Некоторые особенности разрушения лопастей гребных винтов из нержавеющей стали для морских судов

The problematic issues of the operation of propeller blades made of stainless steel, using the example of the analysis of repairs and destruction of the propeller blade of the CPP nuclear container ship Sevmorput are discussed. The greatest danger to the operation of the vessel is the exhaustion of its load-bearing capacity by the blade at loads less than the maximum due to the appearance of surface and internal defects in the blades, further growth over time, due to improperly carried out repair work. To check the strength, calculations of the propeller in the nozzle were made at an average speed of 14.5 knots at a rotation speed of 100 rpm in the SolidWorks software package. By 3D modeling of the propeller, with the rotation of the blades at various angles, a picture of the distribution of pressures on the suction and discharge surfaces of the blades was obtained. Strength assessment showed that the processes that led to the blade breakage are based on the concentration of stresses caused by the presence of hidden defects. An analysis of the physical, mechanical and metallographic properties of the blade material with weld metal (used to correct casting defects and during repairs in operation) was carried out on samples made from a fragment of the root part of the damaged blade left after the break. The results of the study of micro-sections of the blade material made it possible to build an adequate physical model of fracture and formulate recommendations regarding the operation of stainless steel propellers of marine vessels.

THE EFFECT OF GRAVITY FORCE ON THE MOVEMENT OF TITANIUM POWDER PARTICLES IN THE PLASMA FLOW

An attempt is presented to determine the influence of the spray direction on the particles movement in a plasma flow in order to assess the influence of gravity. Three spray directions are selected: down, up and horizontal. Titanium powder PTM-1 TU 14-22-57-92 was considered. For each of the spraying directions under consideration, the movement of titanium powder particles of different dispersion in the plasma flow was calculated using the finite element method with using the SolidWorks software package. Particles with sizes of 1, 50 and 90 microns were selected as the sprayed powder material. The change in the temperature of powder particles when moving in a plasma flow depending on the direction of spraying has been studied. A comparative analysis was carried out for the spraying directions under consideration, based on the results of which the advantages and disadvantages were described and recommendations were given for conducting the processes of obtaining powder and applying coatings. The presented data can be useful when choosing the position of the substrate for applying functional coatings. The influence of gravity on the separation of the resulting powders and on the temperature distribution of the plasma flow in the studied area is demonstrated. To verify the calculation results, a full-scale experiment was carried out in a plasma installation assembled at the IMET Ural Branch of the Russian Academy of Sciences, which is used for producing powder and applying coatings, taking into account its design features. The results have practical benefits for developers and consumers of technological equipment.

Simulation of heat Carrier Motion in Tubular Heating Radiators

Statement of the problem. The movement of the coolant in sections of tubular heating radiators of original designs containing various types of turbulators is considered. It is necessary to develop models of the movement of the coolant in the structures under consideration in the speed range of 0.5—1.5 m/s and compare the intensity of flow turbulence in them. Results. Using the Flow Simulation module of the SOLIDWORKS software package, the results of modeling the movement of a coolant in sections of original tubular heating radiators with turbulent inserts were obtained. 3D models of radiator sections were built. The dependences of the Re number on the coolant velocity and the distribution of turbulence intensity in the radiator sections are given. Conclusions. Based on the results of the simulation, the designs of the sections of the original tubular heating radiators were compared with the standard ones. A turbulent insert providing the highest Re number and turbulence intensity in the radiator section has been determined.

Исследование параметров воздуха при сушке крупноблочных металлических конструкций в сушильной камере тентового типа

One of the stages in the manufacture of large-block metal structures is their coloring followed by drying. A feature of this process is the need to maintain a temperature determined by the characteristics of the paint, which is difficult at low ambient temperatures. The solution of the problem is the use of a tent-type mobile drying chamber at the stage of drying the painted part at the place of its assembly. At the same time, the drying process can be controlled by changing the location of the fan heater and exhaust ventilation, changing the performance of the heater fan and the temperature of the supplied air. The solution of this technological problem is the goal of the study. The study uses the methods of numerical modeling and experimental studies. As a modeling tool, the SOLIDWORKS software package and office packages for statistical data processing have been used. It is found out that the distribution of temperatures in the shelter depends on the thermal resistance of the walls of the drying chamber, the main characteristic of the heater fan, the dimensions of the chamber and the painted module, the gaps between the walls, the ambient temperature and the air coming from the heater, the fan parameters, the fan placement methods and draft ventilation. The calculation considers the aerodynamic resistance of the drying chamber with the part placed in it, the influence of free convection, heat loss and features of air distribution inside the shelter. Based on the results obtained, the authors proposed a calculation method that allows determining the temperature decrease inside the chamber relative to the temperature of the air coming from the heater. To automate the calculation results, a program has been developed to determine the parameters of air after heating with a fan heater. The results obtained makes it possible to solve an important practical problem of ensuring high quality of painting works in a tent-type shelters under various climatic conditions, including negative ambient temperatures due to a reliable forecast of the uneven temperature field in the painting chamber. The developed technique is designed for the rapid selection of heaters, including the supply of a fan, the power of the heating element, and the air temperature at the outlet of the heater depending on the ambient temperature, the permissible range of temperature changes of the paint, the geometric parameters of the tent shelter and the painted product. The scientific value of the study is the results of the study of mixed convection in the tent shelter, the revealed essential regularities of the process and the obtained criterion equation to calculate the temperature range of the paint coating of the product in the chamber. The obtained results have determined the ways to further increase of energy efficiency and to improve the design of tent shelters.

CFD Simulation Analysis of Non-Premixed Combustion using a Novel Axial-Radial Combined Swirler for Emission Reduction Enhancement

Combustion industries for many decades dealing with the issues in reducing the emissions without affecting the performance of combustion. The present study aims to investigate the performance of swirler mechanism which combining between both axial and radial types to reduce emissions and increase the mixing process via the non-premixed method. Each of axial and radial swirler consisted with 8 blades vane. Swirl angle for radial swirler is 35° and inclination angle for axial swirler is 15°. The swirler is designed using Solidworks software package and CFD analysis was then performed using ANSYS Fluent software package. The fuel used is liquefied petroleum gas (LPG) gas which contained 30% propane and 70% butane. The turbulence model standard k-epsilon was used in this study. The result found that the combined swirler was capable to reduce CO emission as the complete reaction into CO2 component was higher. This is due to the broader region of temperature and higher velocity magnitude produced by the combined swirler. However, the maximum temperature result for axial swirler was higher than the combined swirler. As a recommendation, the inclination blade angle in the axial swirler of the combined swirler should be increased to increase the temperature value

Influence of waste rock dump placement on the geomechanical state of underground mine workings

This paper is devoted to assessing the influence of waste rock surface dumps on the geomechanical state of underground mine workings. The conditions of the Pivdenno-Bilozerskyi high-grade iron ore field are chosen as the research object. To study the influence of dump placement and the depth of mine working on the mass stress state on the contour of sublevel drifts, a numerical modeling methodology based on the SolidWorks software package has been developed. This methodology involves the substantiation of the elements and properties of the geomechanical model, as well as the calculation scheme. Polynomial patterns of changing stress value in the hanging wall drift sides have been determined in the depth intervals of 440–740 m depending on the distance of the dump to the geometric center of the stope chamber. It has been revealed that the degree of the waste rock dump influence on the stress state gradually decreases with depth. It has been found that the maximum degree of the waste rock dump influence is observed on the upper horizons. When the waste rock dump is located above the geometric center of the future stope chamber that the stress value on the contour of the hanging wall drift can increase up to 10% compared to the absence of a dump on the earth’s surface. The research results are important for designing stable parameters for supporting sublevel drifts in difficult conditions of occurrence of the hanging wall rocks.

Substantiation of the Design Features of Sandwich Panels for Container Wall Lining

Purpose. The main purpose of this work is to substantiate the design features of sandwich panels for the manufacture of container walls of size 1SS. Methodology. To ensure the strength of the container walls, it is proposed to use sandwich panels as their components. This involves the manufacture of a sandwich panel from two metal sheets, between which a material with energy-absorbing properties is placed. This solution helps to improve the strength of the container by reducing its load. To determine the thickness of the panel sheet, the corresponding calculations were performed using the Bubnov-Galerkin method. It is taken into account that the sheet is a thin-walled plate subjected to an evenly distributed load. To improve the stiffness of the sheet, it is proposed to make it corrugated. The analysis of the corrugations has led to the conclusion that it is most appropriate to use corrugations with a rectangular configuration. Findings. The strength of the sandwich panel was calculated. The spatial model of the sandwich panel was created in the SolidWorks software package, and the strength calculation was performed in SolidWorks Simulation, which implements the finite element method. The calculations took into account the most unfavorable loading mode of the container during rail transportation - shunting impact. The calculation was performed on the example of the container's end wall, since it is the wall that is subjected to the highest loads in the event of a shunting collision with a platform car. The strength calculations showed that the maximum stresses in the sandwich panel made of corrugated sheets are about 258 MPa, which is 16% lower than the permissible stresses. The maximum displacements in the sandwich panel assemblies occur in its middle part and are equal to 3.1 mm. Originality. The design of the sandwich panels that form the end walls of the container is scientifically substantiated. The rational configuration of the corrugations of the sandwich panel sheets is determined. Practical value. The study will contribute to the development of recommendations for the design of modern modular-type vehicle structures and improve the efficiency of the transport industry.

Моделирование процессов тепловой диагностики тепловозной выпрямительной установки

Purpose: To analyze the possibility of determining locomotive rectifier unit malfunction with the help of thermal fields and diode temperature measurement. Methods: There were applied the analysis of rectifier unit faults and their components for a certain period, modeling and thermal calculation in Solid Works Software Package. Results: The picture of thermal field and temperature changes at the diagnosis of regularly running diesel rectifier unit as well as at diode faults such as a breakdown and break. Practical significance: The possibility of monitoring the technical condition of a diesel locomotive rectifier unit when determining diode thermal fields as well as of determining possible malfunctions by diode temperature change is shown.

Choosing the optimal mandible position for inferior alveolar nerve block (IANB) using finite element analysis

BackgroundOne of the most popular methods of local anesthesia in dentistry, inferior alveolar nerve block (IANB) involves the blockade of the inferior alveolar nerve (IAN) and lingual nerve (LN) in the pterygomandibular space. Despite the large number of works describing the contents of this space, the spatial displacements of the anatomical structures of this area at different positions of the mandible have not been sufficiently studied. The aim of our study was to study the spatial movements of the IAN and inferior alveolar artery (IAA) at various positions of the mandible using computer simulation and finite element analysis to find the safest way to conduct IANB. Materials and methodsReverse engineering was used to create a model of the cranial base and the mandible based on computed tomography (CT) data obtained from patient N (male, 24 years old), the arteries of the head and neck were designed from the data of multiphase angiography of patient M (female, 61 years old). Masticatory muscles, sphenomandibular ligament, temporomandibular joint and mandibular nerve were modeled in the SolidWorks software package based on an open database of anatomical structures. The finite element grid was generated in the Solidworks software.In the first series of experiments, the displacement of the mandible was modeled along the vertical axis down by 48 mm (maximum opening of the mouth), in the second series, the jaw was displaced vertically by 48 mm with a simultaneous transversal movement of 10 mm, in the third series, the jaw was displaced along the vertical axis down by 34 mm and transversally by 22 mm. ResultsThe largest distance between IAN and IAA was noted in the third series of experiments. The distance between the nerve and the vessel was minimal in the first series, with an open mouth without lateral displacements. ConclusionThe generated computer model opens new possibilities for studying the dynamic anatomy of the pterygomandibular space. The results of this study can be used for further experimental and clinical trials to find the safest approach to the implementation of IANB, as well as applied in the practice of the educational process.

Analysis of the performance of the shell and tube heat exchanger: Influence of pipe layout and diameter

Heat exchangers are devices that are used in numerous areas of industry with the most important role in process technology. The growing need for maximum energy utilization contributed to the very rapid development of these devices. Of all types of heat exchangers, shell and tube exchangers are the most widely used in process technology. The paper analyzes the performance of a shell and tube heat exchanger of known geometric characteristics and rated power. Numerically and by simulation of fluid flow in the SolidWorks software package, a comparative performance analysis was performed depending on the different layout and for the values of the outer diameter of the pipe 33,7x2 mm and 60,3x2,7 mm for the same external dimensions of the heat exchanger. The obtained results show that the heat exchanger with a circular arrangement of pipes measuring 60,2x2,7 mm has the best performance, taking into account the achieved power of the exchanger.

Experimental analysis of microges installation for existing water flows in industrial plants

Calculation and analysis of the existing potential of low-pressure water flow at the engineering facilities of JSC “NGMK” (Joint Stock Company, Navoi Mining and Metallurgical Combine) is carried out, nomogram for determining the power of water flow based on the head and flow rate is created. The impeller design was analyzed by means of CAD (Computer Aided Design System) SOLIDWORKS software package, the optimal number of water impeller blades was revealed.

Modeling frame of a diesel locomotive bogie in solidworks software

The article considers the possibility of using the finite element method for strength calculations of nodes and parts of modern locomotives. There are examples of solid-state models construction of bogie frames in SolidWorks software package. Developed finite-element models allow determining the tense-strained state of the elements of the crew part of locomotives. The final outcome of modeling is the construction of stress distribution diagrams in the locomotive bogie frame. The data obtained as a result of finite-element modeling can be recommended for use when creating new modern units of locomotives as well as for modernizing and increasing the reliability of existing.

Anti-vortex device for stabilization of measuring parameters in apparatus for biofuel production

The article deals with the problem of metrological support of innovative technologies, in particular, related to the production of promising renewable energy sources such as biofuels. In the process of biofuel separation, it is very important to monitor various technological parameters: pressure, flow, liquid level, temperature, etc. For this purpose, measuring devices are used as part of the automation of technological processes. At the same time, flow turbulence can have a significant impact on the accuracy of the readings of these devices. Often, the transition from laminar to turbulent flow is associated with the formation of a vortex when overcoming the flow of various constrictions at the outlet of the installations. The paper considers a method for preventing the formation of vortices through the use of a anti-vortex device (AVD). Computer modeling of the fluid flow in the SolidWorks software package was carried out in order to determine the optimal geometric characteristics of the AVD. In particular, the influence of the gap in the AVD and its plate diameter was studied.

Расчет температурного поля многослойных несущих конструкций численными методами

Modern approaches to the electronic means design include modeling of thermophysical processes occurring in the apparatus being developed. At the same time, a common task in thermophysical modeling is the problem of determining the temperature field of the supporting structure of an electronic device (board, substrate). Knowledge of the quantitative indicators of the supporting structure temperature field directly affects the prediction of the entire electronic device reliability. The load-bearing structures of electronic devices are increasingly made in the form of multilayer structures where conductive, insulating and semiconductor layers can be present. These features impose new requirements on the development of mathematical models, algorithms, application software packages for calculating the temperature fields of the supporting structures of electronic means. The article considers the process of modeling the temperature field for the supporting structures of electronic means using common software systems MathCAD and SolidWorks. The whole variety of supporting structures of electronic means is divided into three categories: conditionally one-dimensional, conditionally two-dimensional and three-dimensional. It is shown that the temperature fields of conditionally one-dimensional (rods) and conditionally two-dimensional (single-layer boards and substrates) structures should be calculated by the finite difference method in the MathCAD software package. Temperature fields of three-dimensional load-bearing structures, including complex geometric configurations, should be calculated using the finite element method in the SolidWorks software package. The developed algorithms for calculating temperature fields are verified by solving a test problem. Comparative analysis has shown that the discrepancy between the calculation results relative to the test problem does not exceed 0.8%. The developed algorithms for calculating the temperature field can be practically useful in the engineering activities of the developer of electronic equipment.

DYNAMIC MODEL OF A RAILWAY LIFTING CRANE

Introduction: Currently, mobile boom cranes equipped with telescopic boom equipment are widely used in construction, loading and unloading, as well as installation. Purpose of the study: We aimed to develop a dynamic model for a railway lifting crane, taking into account the interaction of its structural elements with each other and the bearing soil surface in a three-dimensional formulation. Methods: In the course of the study, we used Simulation and Motion modules of the SolidWorks software package, Klepikov’s non-linearly deformable soil model, and Lagrange’s equation of the second kind. Results: As a result, we developed a numerical analytical 3D model describing dynamic loading and deformation of the “mobile boom crane – foundation” system in a three-dimensional formulation. The model takes into account the following: the internal bending deformation and the interaction of the mating structural elements of a crane (telescopic sections, telescoping hydraulic cylinders, and outriggers), hoist rope rigidity, grillage (framework of sleepers) influence, elastic and plastic properties of the base platform soil, and action of inertial loads on the structural elements of the lifting crane.

Comparative analysis of physical methods of transport disinfection

Transport is an object of mass concentration of people where workers and passengers are likely to be exposed to pathogens of infectious diseases. 95% are diseases that do not respond effectively to the effects of specific prophylaxis, influenza and acute respiratory viral infections. Currently, measures to contain the infection have led to a restriction of transport activity. In such conditions, the development of effective ways to prevent the occurrence and spread of infectious diseases transmitted by airborne droplets, not controlled by means of specific prevention, as well as the preservation of the health of transport industry workers, is particularly relevant. The aim of the study is to determine the location and type of air disinfection device in the driver's cabin of a railway vehicle and the passenger compartment of a sitting car with various breathing options (natural exhalation, cough, sneezing). To determine the location and capacity of the decontamination plant, the mathematical method of gas-dynamic calculations using solid-state three-dimensional models was used. The study was performed in the SolidWorks software package, using the FlowSimulation module to solve the system of nonlinear Navier-Stokes equations. The trajectories of air flows from human breathing in the cab of the vehicle are calculated taking into account the influence of ventilation. Research on the effectiveness of disinfection was carried out by a certified laboratory in the operating conditions of the vehicle. The results of the calculation allowed us to establish that it is advisable to place devices for physical disinfection of air in the cab of the vehicle at the level of the information panel on the left side or directly in the center. The basis for choosing the technical characteristics of the device for air disinfection should be information about the maximum speed of particles approaching the information panel, which is equal to 2.2-3 m/s. The safest method of disinfection of the air environment of vehicles is the use of closed UV radiation installations, the effectiveness of which is confirmed in the course of a full-scale experiment. It is concluded that the formation of an infection zone when an infected person is in the cab or cabin of a vehicle largely depends on the duration of his stay in the cabin, the intensity of breathing and the use of personal protective equipment. The advantage of closed UV radiation installations is the simultaneous provision of high disinfection efficiency and satisfaction of all safety requirements (chemical, environmental, fire, electrical, etc.), as well as the possibility of using the method in the presence of people. The analysis of the regulatory and technical documentation showed that UV irradiators are the only type of disinfection equipment that meets the requirements of domestic legislation in the field of sanitary and epidemiological welfare.