mEchanical EnginEEring and machinE building analysis oF tribotEchnical charactEristics oF sElF-Fluxing coating undEr rolling and sliding at non-stationary loading

s and references 51 Technology audiT and producTion reserves — No 2/1(28), 2016 mEchanical EnginEEring and machinE building analysis oF tribotEchnical charactEristics oF sElF-Fluxing coating undEr rolling and sliding at non-stationary loading


analysis oF thE ElEctrically drivEn gas pumping units application advantagEs page 9-12
This article discusses the impact of operational, environmental and economic factors on the drive choice to equip the gas pumping units. The main aim of this study is to analyze the factors influencing the choice of drive type, show the advantages of EDGPU, to determine the necessary conditions for their application. Comparison of frequency-controlled, hydrodynamic and mechatronic electric driven units with turbine driven is done based on the indicators of availability and the ability to implement different load regimes, efficiency, technological readiness and service life of equipment, ease of placement and need for production areas, requirements to energy supply and quality of gas quality, impact on the environment. Analysis on the basis of economic criteria includes consideration of the required investment costs, operating costs, including the costs of maintenance and repairs, the life cycle cost. Research results can be used for design of new and modernization of existing compressor stations of main gas pipelines, as well as the choice of technological compressors in various industries.
Keywords: gas turbine, electric motor, compressor, variable drive, operational, environmental and economic factors.  It is well-known, that all the fundamental foundations of the modern theory of air-jet engines (AJE) are in full wrong, that generated wrong opinion that in zone H-B 2 turbine (engine) energy is not supplied to the gas flow and gas flow pressure up to maximum П * к in zone B 2 -K is provided only with diffuser (widen) canals between working wheel (WW) blades of low, middle and high pressure compressors (LPC, MPC, HPC) with providing turbine (engine) external work to LPC, MPC, HPC from the back. this in full wrong opinion, which exists during the last 86 years, is simply explained that in LPC, MPC, HPC diffuser (widen) canals are in full not exist because in these compressors only confusor (narrow) canal are existing. In zone H-B 2 turbine (engine) provides it's energy to the gas flow for widening (vacuum) and acceleration to receive calculated kinetic ener gy in the cross section B 2 -B 2 . In zone of the gas flow pressure B 2 -K the part of gas flow kinetic energy, which is stored in zone H-B 2 ,

ISSN 2226-3780
which is an external work, which turbine (engine) provides to compressors front the face, is generated into potential pressure energy by means gas flow axial speed decrease from step to step while gas flow braking is provided by pressure leaps, which are generated only on the backs of the blades of WW, and forehead resistant of the last. flow braking generates inertial force, which is directed by the flow and pressure the gas flow to maximum П * к , while that static pressure of gas flow on the backs of the blowing profile blades is much more then the same on trough of the blades, which creates an additional revolve moment for rotor kinetic energy LPC, MPC, HPC keeping.
Keywords: kinetic and potential energy, inertial force, axial compressor.  The problem of optimal control of the main engine load on the basis of the account of hydrometeorological navigation conditions is studied in order to minimize fuel and energy resources and the voyage providing for a scheduled time using the electric machine running on one propeller shaft with the main engine. The urgency of this problem is that when the weather conditions have any change there is load change on the engine. Researches show that the wind force affects the ship's power engine is already at 5 on the Beaufort scale. Therefore, the proposed concept of diesel-powership creates possibility to ensure the necessary operational control of the ship's power engine in storm situations. This concept provides the required reliability and safety for ships, which are often subject to changes in weather conditions.
Keywords: main engine, hydrometeorological conditions, propulsion unit, energy resources, electric machine.  This article discusses the use of combined heat power generation system by the automated electric heating units (customers, regulators) and the results of research. The main aim of this study is a feasibility study for the introduction of the automated control systems of electric load in electrical and heating systems of administrative buildings. The use of electrical accumulative heating systems, which are the consumers-regulators, enables alignment of the energy load curve in the power supply system for administrative buildings. In this article, we defined the technical and economic effect of the introduction of energy-efficient combined heat supply system with the accumulation of heat and three-band metering based on the auto-mated transformer type unit for electric heating. Presented power supply system with built-in automated electric load control units can improve the energy efficiency of modes of distribution networks of power supply systems of administrative buildings. The evaluation of the overall effect of the alignment of the electric power system load curve gives an answer about the economic feasibility of the introduction of combined heating systems. The research results can be used in the design and development of electrical and heating systems of administrative buildings to control the selected load.
Keywords: consumer-regulator, electric load curve, energy efficiency, power supply system, cost of electricity, heating.  The results of the research of processes while using cavitation in heating systems, water purification and circuit-breaker oil reprocessing are discussed in the article. In the process of different original types of heat medium cavitation, i. e. water, mechanic glycerin, PDMS commixtures, characteristics of thermal effectiveness before and after cavitation are determined. The proposed methodology allows using the results of efficient cavitation while heating, water purification and oils reprocessing. Cavitation can be efficiently used not only in housing and utilities infrastructure, agriculture, energetics, food industry but also in lacquer, ready-mix paint, paper, biomass fuel manufacturing. In the article the authors propose to use the developed cavitation devices in the most fields of production, agriculture, housing infrastructure, whereas the need of energy saving, i. e. electric power, is sufficient. The results of author's research can be used by power engineers of industrial enterprises, glasshouse industry, farms, fish hatcheries, purification plants, water conditioning, oily water disposal systems.
Keywords: cavitation, pressure, whirlwind, rotation, purification, oil reprocessing, efficiency. The impact on integral indexes of reliability SAIDI, SAIFI and ENS of the method of sectionalization of distribution networks with the voltage 6-10 kV using an automatic disconnectors which pro-posed in the works [2][3][4] has been researched in this work. The formulas for the definition forward-looking indexes of reliability were received based on assumptions which were adopted in this work. The indexes of reliability SAIDI, SAIFI and ENS for the standard models of transmission lines has been calculated using received formulas.
The impact of the use one or two automatic disconnectors in the distribution networks with the voltage 6-10 kV of any configuration without reserve, with manual and automatic reserve has been researched.