Global Energy

RAR RUS 7-15 Ivanchenko Igorʼ hydroturbo@ckti.ru Topazh Grigory Shyr Vasilii schvas@gmail.ru Reliability estimation for hydro-turbines with prolonged lifetime The original physically-grounded formulization of the operative readiness coefficient has been proposed as a quantitative index of hydro-turbine reliability. Computations of dynamics demonstrate that one can detect three typical periods of turbine exploitation: initial period with low reliability indices, period of normal exploitation with high indices and final period characterized by a gradual decrease in reliability. The proposed index is used in the special method which allows estimating the necessity of turbine reconstruction for reliability reasons. It is based on comparing the estimated value of the operative readiness coefficient for a hydro-power station (HPS) planned for reconstruction with the respective coefficient for the similar HPS. If such a value is less than the same one for the considered analogue HPS, it proves to be necessary to perform the reconstruction of the checked hydro turbine for reliability reasons. 10.5862/JEST.219.1 621.224.7 HYDRO-TURBINE; RELIABILITY; COEFFICIENT OF OPERATIVE READINESS; LIFETIME; GENERATION MODE; REPAIR; RESERVE. https://engtech.spbstu.ru/article/2015.92.1/ 1_ivanchenko.pdf

RAR RUS 16-24 Shpenzer Gennady shpenzer.g@gmail.com flow separation and nonstationary processes in LP wet stages The paper considers forming a LP running part of large power steam turbines allowing for the performance in the last stages of pulsating streams. The authors have obtained and generalized the results of researching LP running parts at experimental stands with wet steam. This paper discusses the physical model of a wet steam flow in LP last stages and the influence of various factors on the increase in flow pulsations and energy losses and on the reduction in the turbine stage efficiency. The research results of the experimental turbine are presented and analyzed. Important dependences have been obtained, including flow fluctuations and stability zones, as well as dynamic stresses while changing the operating mode. 10.5862/JEST.219.2 621.165 STEAM TURBINES; MOISTURE; LAST STAGES; FLOW PULSATIONS; STAGE EFFiCIENCY. https://engtech.spbstu.ru/article/2015.92.2/ 2_shpenzer.pdf

RAR RUS 25-32 Rusinov Rostislav kgm-spb@list.ru Dobretsov Roman kgm-spb@list.ru On parameters of fuel injection in diesel engines The paper considered the issue of choosing injection spray nozzle parameters in the fuel feeding system of the diesel engine. The authors proposed a method of analytical determination of the coefficient in the calculation model of the dispersed jet motion. There were presented the analytical correlation between the main parameters of the injection process: pressure, density, fuel consumption, speed drops, length of the jet, geometric dimensions of the atomizer and other calculation examples. Experimental data confirm the adequacy of the main provisions of the estimated model. The position of the new methodology was identified in the overall structure of the rapid assessment method for workflow settings of the diesel engine. 10.5862/JEST.219.3 629.1.032.001 DIESEL ENGINES; DISPERSED JET MOTION; NOZZLE; INJECTION PARAMETERS; FUEL INJECTION; DEVICES OF DIESEL ENGINES. https://engtech.spbstu.ru/article/2015.92.3/ 3_rusinov.pdf

RAR RUS 33-40 Berkovich Arkadii berkovitch@yandex.ru Polishchuk Vladimir visantiya@freemail.ru Nazarenko Andrei turbo@pef.spbstu.ru boosting gas turbine power plants through optimal water injection into compressor The article is dedicated to one of the most important issues of the gas turbine industry – improvement of gas turbine power plant performance, reduction in power consumption for the drive of separate compressors and increase in their productivity through the use of water injection into the compressor. The article provides brief description of a set of parameter calculation programs for the gas turbine power plant performance with compressor-inlet water injection. The complex was developed at St. Petersburg State Polytechnic University. Certain results of the computational study of injection effects on GTK-10 gas turbine are presented to illustrate possibilities of the complex application. The obtained results enable organizing the best option to use injection as for the evaporative cooler during air compression as for the online compressor water wash; and also to control nitrogen oxide emission in exhaust gases. The program, developed by the authors,is tested on a wide range of power characteristics of gas turbines, which are used in full-scale and experimental studies. The calculation results showed good agreement with experimental results. 10.5862/JEST.219.4 621.51 gas turbine power plant; compressor; water injection; power; efficiency; optimization of fuel injection; compressor blades flushing; nitrogen oxides. https://engtech.spbstu.ru/article/2015.92.4/ 4_berkovich.pdf

RAR RUS 41-47 Halilov Firudin natalia-shilina@yandex.ru Kotlyarov Eduard eddikot@gmail.com avoiding the use of protection wire and tubular rods of 35-150 kV for lightning protection of overhead power lines and substations in conditions of Far North This work considers the problem of lightning protection of 35-150 kV overhead power lines and substations in conditions of the Far North of the Russian Federation. The alternative methods of organizing lightning protection are described in this paper, since conclusions, suggested by the Electrical Installation Code, are not able to provide the required level of lightning protection. Recent research shows that the lightning protection of overhead power lines and substations in conditions of the Far North can be arranged without protection wire and tubular rods, which is recommended by EIC. As an alternative the authors offer the following measures to improve the level of protection for these overhead power lines and substations: equipping the overhead power lines with suspended surge protector devices (SPD), launching the last generation SPD at substations, the cascade scheme of lightning protection, using smart polymer arresters. In addition, it’s mentioned that the switching resource of the HV circuit breaker is not fully utilized, whereas it’s a reserve to improve lightning protection. 10.5862/JEST.219.5 699.887.2 Lightning protection; electrical installation code; overhead power lines; surge protector devices; smart arresters. https://engtech.spbstu.ru/article/2015.92.5/ 5_khalilov.pdf

RAR RUS 48-57 Nikolaev Nikolai nikinik@mail.ru Shipulin Aleksandr avshipulin@mail.ru Kupavikh Kirill Kypavih@yandex.ru Energy efficiency improvement of well development The paper describes the results of the experiment stand which imitates the crack in the oil stratum. The experiment stand allows modeling cracks of various length and cross-section by changing tubes having length of 0,33, 0,5, 0,66 and 1 m, with the diameter of 2,4 and 6 mm.The authors analyzed charts of pressure in the crack measured at different distances from the borehole cavity at 5, 10 and 20 atm. The paper provided mathematical description which shows the correlation between pressure changes in the oil stratum crack when forming the impulse pressure at the cellar. The calculations show the improved energy efficiency transmission by using an impulse wave method from the cellar to the system of cracks in the near-well zone. It was validated that the technology of developing the system of cracks in the near-well zone of the stratum due to hydropercussion do not require the usage of submersible equipment; the minimum amount of equipment for well repair is used. The energy efficiency of impulse wave impact on the well face is proved. 10.5862/JEST.219.6 622.245.54 Energy efficiency improvement; development of wells; hydrodynamic treatment; shock wave; acidizing; viscous oil. https://engtech.spbstu.ru/article/2015.92.6/ 6_nikolaev.pdf

RAR RUS 58-66 Gorozhankin Sergei gormar52@gmail.com Savenkov Nikita SavenkovNV@yandex.ru Chukharkin Artiom piero1978@rambler.ru Combined gas turbine power plants with Stirling engines The article studies feasibility of real cycles of combined power plants including gas turbine engines and Stirling engines. The authors consider variants of construction concepts for such power plants. The article presents the analysis of thermodynamic cycles and, as a result, provides dependences to calculate their basic parameters. On the research results the authors give the quantitative heat utilization estimates of the combustion products in the gas turbine engine for the Stirling engine. The study identifies the Stirling engine’s efficiency limits, power and combined power plant’s efficiency in general. The authors put forward proposals for the application and the empowerment of such plants as part of vehicles. 10.5862/JEST.219.7 621.444.4+621.412 Combined Power Plant; Gas Turbine Engine; Stirling Engine; thermodynamic cycles; efficiency; power. https://engtech.spbstu.ru/article/2015.92.7/ 7_gorozhanin.pdf

RAR RUS 67-71 Epikhin Aleksei a.epikhin@inbox.ru technological limitations and features of burning coal-water slurry fuels in ship power plants The aim of the article is to analyze the possibilities of using coal-water fuel (CWF) instead of residual fuel oil and heavy fuel for ship power plants. The article is dedicated to reviewing the particular features of coal-water fuel burning in ship power plants instead of classically used fuel oil and diesel. There were analyzed the features of the technological process, related to the removal of combustion products. Moreover, the environmental aspects of the new fuel usage were analyzed. The use of CWF has a promising economic effect, because the cost of fuel in terms of its energy performance is significantly lower in comparison with fuel oil and diesel fuel, and also has significant environmental benefits. 10.5862/JEST.219.8 62–614 coal-water fuel; power properties; completeness of burnout; cinder; fuel system; injector. https://engtech.spbstu.ru/article/2015.92.8/ 8_epikhin.pdf

RAR RUS 72-82 Zhavrockij Stanislav Kamakura-Edo@yandex.ru Strebkov Aleksandr asstr960@yandex.ru Osipov Aleksandr avo-turbo@mail.ru Inproving the efficiency utilization of fuel gas excess pressure in two-stage expander The study considers the feasibility of applying the expander-generating units for the electric energy production instead of throttle pressure regulators. The research shows the importance of the influence of the operating parameters of the gas supply system and their changes in the electric energy quantitative estimation produced by the expander-generator unit. Such parameters are gas pressure in the supply pipeline and a gas flow rate through the expander. The study shows that the regulation of the expander-generator unit is provided in varying degrees of throttling the gas flow while reducing gas consumption. Periodic changes of pressure in the main gas pipeline and the gas flow result in the need to use the throttle gas regulator in front of the expander. Consequently, this fact reduces the efficiency of the expander-generator unit installed on gas-distributing stations or gas control point. The proposed series and parallel two-cylinder utilization expander unit provides the ability to limit the throttling process in the regulation of plant operation. As a result, this allows increasing the electric energy production and making a better use of the energy of excess gas pressure. Among the benefits of this study, by switching from a parallel circuit to a series circuit, there are additional electric energy generation and better utilization of energy excess gas pressure which are achieved under certain conditions. 10.5862/JEST.219.9 620.9 turboexpander unit; variable mode; throttle response; energy efficiency; fuel gas; electric energy production; series and parallel circuit. https://engtech.spbstu.ru/article/2015.92.9/ 9_zhavrotskiy.pdf

RAR RUS 83-90 Kortikov Nikolay n-kortikov@yandex.ru Mironova Marina mironova_mv@rambler.ru virtual stand for studying the thermal state of steam turbine cooled rotors It is noted that steam turbine building is evolving toward the creation of powerful steam turbines with high initial steam parameters, and their creation is not possible without the development of highly efficient cooling systems based on three-dimensional thermo-gas-dynamic calculations. Within this study the virtual test stand, based on the ANSYS Fluent 14.0 system, was created to investigate the conjugate heat transfer and thermal state of rotors and discs with forced cooling systems for powerful steam turbines. The module STEAM (as a user-defined function - UDF) is integrated in the virtual test stand, allowing for the properties of steam at high parameters. The calculated results were compared with the experimental data obtained during heat tests of the forced steam cooling system at the existing thermal power plant. The authors give recommendations for the choice of calculation model parameters that provide the balance of accuracy with an error not exceeding 1% of the metal temperature. 10.5862/JEST.219.10 532.529:536.24 steam turbine; conjugate heat transfer; virtual stand; cooling system; thermal testing; numerical modeling; rotor. https://engtech.spbstu.ru/article/2015.92.10/ 10_kortikov.pdf

RAR RUS 91-109 Shakirov Mansur manshak@mail.ru Universal theory of autotransformer The paper presents the foundations of a new theory of the two-winding autotransformer with obtaining the universal T-shaped equivalent circuit. The Universalism of the circuit is manifested in mapping the magnetic fluxes in the window and in the yoke of the autotransformer. This shows that the magnetic circuit of a short-circuited autotransformer experiences super – and antifluxes compared to the fluxes when idling. It is proved that these fluxes can be substantially higher than the respective fluxes in the short-circuited transformers. 10.5862/JEST.219.11 621.313 AUTOTRANSFORMER; PRIMARY AND SECONDARY WINDINGS; MAGNETIC FLUX; SHORT CIRCUIT; EQUIVALENT CIRCUIT; IDLING. https://engtech.spbstu.ru/article/2015.92.11/ 11_shakirov.pdf

RAR RUS 110-118 Peredelsky Gennadii didenco.1965@mail.ru Didenkо Yurii didenco.1965@mail.ru Properties of frequency-independent two-terminal networks The paper considers the property of frequency-independent two-terminal networks (FITTN) formed by two parallel branches, each of which contains a single resistor and a dissipative two-terminal network with heterogeneous reactive elements. This property implies that after the transient process the frequency-independent two-terminal network has the constant resistance to the electric current in the case of the influence of the next feeding pulse signal with tension change as long as its duration under the law of exponential functions of time when fulfilling only a certain part of conditions of frequency independence (CFI). When fulfilling all conditions of frequency independence, FITTN has the constant resistance to the electric current at any forms of the feeding tension, and also during the transient process. The analysis of a special option of the frequency-independent two-terminal network uses the way which relieves the need to solve algebraic equations and hereby simplifies identical transformations. The article describes the use of FITTN in the pulse four-arm bridge circuits. Such bridges contain single resistors in three arms, and the fourth arm is formed by the frequency-independent two-terminal network. These bridge circuits allow grounding both multi-element two-terminal networks: the counterbalancing two-terminal network with variable adjustable parameters and the two-terminal network which is an object of measurement with the required parameters. This raises the possibility to exclude two components of the error: component due to the parasitic capacitance with respect to «ground» of the ungrounded multi-element two-terminal network and component due to the instability of this parasitic capacitance. 10.5862/JEST.219.12 621.317.733:621.317.33 frequency-independent two-terminal network; conditions of frequency independence; pulsed power; four-arm bridge circuit; measurement error. https://engtech.spbstu.ru/article/2015.92.12/ 12_peredelskiy.pdf

RAR RUS 119-125 Gataullin Airat gataullinam@mail.ru Matukhin Vadim matukhinvl@mail.ru Nizamov Ilʼdar ildarn444@gmail.com Nondestructive testing method of polymer 35 kV composite insulators Recently the polymer composite insulators covered with the silicone protective shell (PCI) of the nominal voltage of 35 kV have become more widespread, instead of porcelain and glass insulators. As early as at the stage of production, PCIs form specific defects that lead to their destruction and as a consequence to the emergency modes of the power system. In order to control PCI, the present study proposes a nondestructive method of testing based on an analysis of partial discharges. The method is effective for detecting the internal defects and for detecting the defects which arise due to moistening insulator shells. 10.5862/JEST.219.13 621.317.75 partial discharges; non-destructive methods of control; remote control insulators method; high voltage electrical equipment diagnostics; monitoring of insulators. https://engtech.spbstu.ru/article/2015.92.13/ 13_gataullin.pdf

RAR RUS 126-140 Ptashnik Alina alina_pv@mail.ru Method of the quantitative analysis of structure of alloys with disperse inclusions using electron microscopy The paper is devoted to the developed and validated method of the quantitative analysis for the structure of multiphase alloys with disperse inclusions. The method is based on sharing raster electron microscopy and X-ray spectral microanalysis. There have been revealed experimental features of the method. The paper presents the parameters which have been established to control setting up the automated program during the use of the method. There have been formulated requirements to prepare a metallographic sample and to interpret results of the alloy structure analysis.The developed method has been applied for the quantitative research into the change of the structure of Fe-Cr-Ni heat resistant alloys at lasting high-temperature endurance. The paper confirms reliability and high precision of the method. 10.5862/JEST.219.14 669.1.017:669.018.44 :669:018.28:669.018.891 CAST HEAT RESISTANT ALLOYS; MICROSTRUCTURE; PHASE COMPOSITION; ELECTRON MICROSCOPY; CARBIDE HARDENING; DISPERSE PHASES. https://engtech.spbstu.ru/article/2015.92.14/ 14_ptashnik.pdf

RAR RUS 141-150 Galevsky Gennadiy kafcmet@mail.ru Rudneva Victoria Efimova Kseniia efimovaksenia@mail.ru Development of scientific and technological foundations for plasma synthesis of titanium nanoboride The scientific and technological foundations of plasma synthesis of titanium diboride, including thermodynamic and kinetic conditions of boride formation during the interaction of titanium and titanium dioxide with the products of boron gasification in the stream of nitrogen - hydrogen plasma and its laws for the two options using titanium powder mix - boron and titanium dioxide - boron. Within the study of technological options the authors obtained mathematical models describing the dependence of the amount of titanium diboride and boron in synthesis products on the basic parameters. The authors examined and proposed a plausible mechanism of titanium diboride formation with the scheme “vapor - melt - crystal”, involving the condensation of titanium vapors in the form of aerosol, boriding of melt nanodroplets with borohydride and titanium - boron melt crystallization. There was conducted the complex physical and chemical certification of titanium diboride, which includes the study of the crystal structure, phase and chemical composition, dispersion, morphology and particle oxidation. The authors analyzed technological prospects to apply titanium diboride nanopowder as the main component of a wettable coating for carbon cathodes with improved physical - mechanical and barrier properties. 10.5862/JEST.219.15 661.665 titanium diboride; plasma synthesis; simulation; formation of boride; boron; powdery raw materials; dispersion. https://engtech.spbstu.ru/article/2015.92.15/ 15_galevskiy.pdf

RAR RUS 151-158 6602962915 Peter the Great St. Petersburg Polytechnic University, Russia Bashkarev Albert bashkarev@spbstu.ru

Russia, 195251, St.Petersburg, Polytechnicheskaya, 29

Kushchenko Aleksandra aleksandra.kushchenko@rambler.ru Deformation characteristics and properties of thin-layer polyamide coatings in compression connections Compression connections in machine units may be destroyed as a result of fretting corrosion. One way to combat this can be the use of polymeric polyamide coatings. The technology applying such coatings and their working conditions in compounds with interference have many features. We investigated values of static and instantaneous moduli of elasticity, Poisson’s ratio, the value of creep function and its dependence on hydrostatic pressure for polyamide coatings on a steel substrate. Instantaneous modulus of elasticity for polyamide coating PA-6 is almost three orders of magnitude greater than its static value, and Poisson’s ratio is 0.5. Creep function of polyamide coatings decreases with increasing hydrostatic pressure. 10.5862/JEST.219.16 621.88.084.4 compression connections; polyamide coatings; elasticity modulus; Poisson’s ratio; creep function. https://engtech.spbstu.ru/article/2015.92.16/ 16_bashkarev.pdf

RAR RUS 159-166 Arsentyeva Xenia xenia.ars@gmail.com Kunkin Sergei ksn54@mail.ru Mamutov Alexander Mamutov Viacheslav vmamutov@mail.ru Forming limit diagram for thin sheet metal at metal forming by movable media The authors developed a combined numerical-experimental technique to obtain a Forming Limit Diagram of thin sheet metal for metal forming by movable media. The technique is based on deforming sheet samples until failure by pressure of polyurethane into a variety of elliptical dies. The required strain state is defined by the proportion of the elliptical die window. Through-thickness strain of the sample near a zone of failure or necking was measured, and major in-plane strains were obtained by finite-element simulation based on the familiar metal properties. Simplicity of measurements and absence of a grid on the surface of the sample are the advantages of the suggested technique. Points of the Forming Limit Diagram for the specific thin sheet stainless steel were obtained. 10.5862/JEST.219.17 621.73.011 METAL FORMING BY MOVABLE MEDIA; forming LIMIT DIAGRAM; COMBINED NUMERICAL-EXPERIMENTAL TECHNIQUE; DESTRUCTION OF SAMPLES BY PRESSURE OF POLYURETHANE; SAMPLE THICKNESS MEASUREMENT; FINITE ELEMENT CALCULATION OF RELATIONSHIPS BETWEEN THE deformations. https://engtech.spbstu.ru/article/2015.92.17/ 17_arsenteva.pdf

RAR RUS 167-174 Usov Oleg usov496@mail.ru Gusev Mikhail M.Gusev@vniitransmash.ru Loyko Aleksandr aleksandr.loyko@inbox.ru Makarov Aleksei gorodoshnik@bk.ru Electromechanical transmission for military tracked vehicle with hybrid power plant The authors developed the kinematic scheme of electromechanical transmission and designed its power block for the military track laying vehicle weighing 54 t and with a maximum speed of 75 km/h; they defined rational values of kinematic and power parameters and characteristics of the transmission and the hybrid power plant; power of the heat engine, generator, power electric motors and electrical drives energy. This paper presents external fuel and power characteristics of a heat engine with coordinates of the minimum specific fuel consumption, when the option of controlling the heat engine which provides minimum fuel consumption at the vehicle movement on the test route is chosen. 10.5862/JEST.219.18 623.438.3–23 kinematic scheme; military tracked vehicle; hybrid power plant; Electromechanical transmission; minimum fuel consumption. https://engtech.spbstu.ru/article/2015.92.18/ 18_usov.pdf

RAR RUS 175-181 Popov Igorʼ ip.popow@yandex.ru Chumakov Vladimir vg.chumakov@yandex.ru Terentyev Aleksandr ad.terentev@yandex.ru Reduction in drive power of screen graders The authors have established that in the operating mode some amount of the bulk material can be considered conditionally stationary against the sieve mill, and it can contribute to the inertial load. The rest of the bulk material remains movable and provides the main part of the dissipative load. Allowing for inertia and mobility of the bulk material, the authors calculated the inertial and dissipative power of the actuator, with the inertial power exceeding more than eight times the dissipative one. This paper shows that the use of the kinematic scheme for the screen grader with the shift of oscillation phases of two sieve mills against each other by a quarter of the oscillation period prevents the consumption of the electric power equal to the inertial one, and leads to five time reduction in irregularities of dissipative power. 10.5862/JEST.219.19 631.362.322 sieve mill; oscillations; inertial load; dissipative power; drive. https://engtech.spbstu.ru/article/2015.92.19/ 19_popov.pdf

RAR RUS 182-190 Nosov Victir nosovvv@list.ru Nominas Sergei nominas.s@yandex.ru Zelensky Nikolai smoke.kolay@mail.ru Pressure vessel strength assessment based on acoustic emission parameters Exemplifying production tests of a hydrogen sulfide purification absorber and laboratory tests of rings which simulate the case of underwater vehicles, the authors optimized calculation and analyzed the diagnostic value of heterogeneous materials related to the resource of the acoustic emission strength, which resulted from the acoustic emission micromechanical model. Considering metrological aspects of this definition, the researchers used the diagnostic value of the acoustic emission time dependence parameters and their statistical distributions. The paper shows the relationship between diagnostic parameters and the resource, the optimized calculation of the diagnostic parameter by selecting an informative acoustic emission primary parameter. This optimization is used in the information form. The paper presents the resistance of the considered diagnostic parameters to destabilizing factors. 10.5862/JEST.219.20 621.793:620.199:001.18 Acoustic emission; strength assessment; pressure vessels; micromechanical model; experimental data. https://engtech.spbstu.ru/article/2015.92.20/ 20_nosov.pdf

CHR RUS 191-196 Ivanov Alexander ivanov@mediabooks.ru Twenty years ago: the chronicle of one journal’s creation Twenty years ago: the chronicle of one journal’s creation As one of the direct creators of “Scientific and Technical Proceedings” the author (Alexander Ivanov) analyzes preconditions and first periods of the new science journal establishment in 1990s. He also proves validity and necessity of such a kind of the mass-media creation demanded by science. Along with the need of scientific publications, the author emphasizes features of a paradigm shift not only in publishing all over the country, but university publishing in particular. It results from the speed of science evolution in the information age. 10.5862/JEST.219.21 002.5 Scientific and Technical proceedings; science journal; science; history; university publishing; mass media. https://engtech.spbstu.ru/article/2015.92.21/ 21_ivanov.pdf

REV RUS 197-209 Zheleznyakov Alexander zheleznyakov@rtc.ru Korablev Vadim korablev@spbcas.ru Japan’s outer space exploration The article describes the history of the space technology development in Japan, the main steps of the Japanese space activity and the most important achievements in this area, as well as prospects of the future space exploration by Japanese satellites and spaceships. The authors have analyzed Japan’s space program, have indicated the main achievements and failures, have described the activity of Japanese astronauts and their contribution into the space exploration. The article outlines the forecast for coming years in the field of the Japanese space activity. 10.5862/JEST.219.22 629.78 ASTRONAUTICS; SPACEPORT; LAUNCH VEHICLE; SATELLITE;TANEGASHIMA UTINOURA. https://engtech.spbstu.ru/article/2015.92.22/ 22_zheleznyakov.pdf

UNK RUS 210-213 Matenev Oleg The names of scientists Petersburg in a firmament The article presents data on the part of minor planets which have been named after prominent St. Petersburgians. The author provides information about the facts of discovering the first minor planets, including the involvement of Russian researchers. The article outlines the history of modern trends in naming newly discovered minor planets. 10.5862/JEST.219.23 001.92;52 MINOR PLANETS; ACADEMY OF SCIENCES; THE OUTSTANDING PETERSBURGERS; LENINGRAD; POLYTECHNICAL INSTITUTE. https://engtech.spbstu.ru/article/2015.92.23/ 23_matenev.pdf

RAR RUS 213-217 Volkova Violetta violetta_volkova@list.ru Vyacheslav М. Molotov During the Great Patriotic War of 1941–1945, the people of our country contributed to the history of the unmatched feat, defended the sovereignty of the Soviet Union. Studies on this period show a growing awareness that this feat would have been impossible without the country leaders who united our people. No matter how are assessed successes and failures of the Council of People’s Commissars (SovNarKom — later the Council of Ministers) and the USSR State Defense Committee (SDC), it is impossible not to recognize the merits of the chairman of the USSR government Stalin and his deputy V. M. Molotov. It was V.M.Molotov who on June 22, 1941 at 12 o’clock broadcasted the message about the beginning of the war and finished his speech with the famous words: «Our cause is just. The enemy will be defeated. Victory will be ours.» This year marks the 125th birth anniversary of Vyacheslav Mikhailovich Molotov, whose part of life is connected with the Polytechnic Institute. Therefore, the Commission for the Historical Studies at our university decided to make students and the faculty aware of the life and work of the outstanding personality, Hero of Socialist Labor Vyacheslav Mikhailovich Molotov. 10.5862/JEST.219.24 929:328:321:327 MOLOTOV; GREAT PATRIOTIC WAR; council of PEOPLE’S COMMISSARS; HERO OF SOCIALIST LABOR; State Defense Committee (SDC); POLYTECHNIC UNIVERSITY. https://engtech.spbstu.ru/article/2015.92.24/ 24_volkova.pdf

PER RUS 218-225 Demidov Alexander ph-chem@ftim.spbstu.ru Nikolay Vladimirovich Agueyev. Way to science The essay provides some facts about the Russian scientist N.V. Agueyev (1903-1983): his main scientific outputs fulfilled under the leadership of the Academy member N.S. Kurnakov in the Leningrad Polytechnic Institute, his educational works in the Leningrad Metallurgical Institute and in the Leningrad Industrial Institute, which were affiliated to the Polytechnic Institute in 1930 and 1934. The essay emphasizes the importance of training in Germany for N.V. Agueyev’s self-development as an outstanding scientist. The author shows a special role of N. V. Ageev in disseminating a new x-ray research method for metals and alloys in order to solve scientific and applied tasks. In the middle of the XX century this method was especially fruitful for the development of knowledge about the nature of metal substances which are the foundation of the science about metals and alloys. 10.5862/JEST.219.25 001:93/94 PHYSICOCHEMICAL ANALYSIS; X-RAY ANALYSIS; THERMAL ANALYSIS. https://engtech.spbstu.ru/article/2015.92.25/ 25_demidov.pdf

PER RUS 226-229 Morachevski Andrey morachevski@mail.ru Academician Vladimir Aleksandrovich Kistyakovsky (for the 150th anniversary) The essay is dedicated to the life, teaching and research activities of the Professor of St. Petersburg (Petrograd, Leningrad) Polytechnic Institute (from 1902 to 1918 and from 1922 to 1934.), Member of the Ukrainian Academy of Sciences (since 1919) and the USSR Academy of Sciences (since 1929) V.A. Kistyakovsky, who is a prominent scientist in the field of physical chemistry, theoretical electrochemistry and corrosion protection of metals. 10.5862/JEST.219.26 001:929:66 KISTYAKOVSKY V.A.; ACADEMICIAN OF USSR ACADEMY OF SCIENCES; SCIENTIFIC ACTIVITY; PHYSICAL CHEMISTR; SAINT PETERSBURG POLYTECHNIC INSTITUTE; HIGHER EDUCATIONAL INSTITUTION. https://engtech.spbstu.ru/article/2015.92.26/ 26_morachevskiy.pdf