05.00.00 Technical science
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STUDYING THE EFFECT OF PRESSURE IN THE PROCESSES OF HEAT MASS TRANSFER AT SOLID PHASE DURING DRYING
DescriptionThe article studies the issues of mathematical description of pressure effect in the processes of heat mass transfer with a solid phase during drying
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Description
This article aims to study the prospects of energy complexes on the basis of renewable energy sources to supply electricity to the stand-alone consumers in different regions of Myanmar. In order to do that territory of Myanmar is divided into some regions according to their amount of renewable energy sources, methods for determining the optimum parameters and operation of energy complex on the basis of renewable energy sources are developed and the cost-effectiveness of those energy complexes in the regional power sector of Myanmar is analyzed
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Description
On the basis of a field experimental research, the efficiency of a bush cutter with vegetation supporting device is studied, at processing of sites with vegetation of various tree species and a various average thickness
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THE RESEARCH OF THE EQUIPMENT OPERATION EFFICIENCE FOR FINE GRINDING OF THE ANIMAL ORIGIN FEEDS
DescriptionThe article presents the results of the research of the equipment operation for animal origin feeds fine grinding, and also its operation efficiency index
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The article proposes a method of research, evaluation and selection of priority parameters for monitoring and prediction of a technical condition of engines using the method of factor analysis
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The article presents: the results of experimental studies of the influence of parameters on Escherichia coli ozonation and Staphylococcus aureus, the optimal parameters of ozonation hive on the criterion of minimum energy intensity of the treatment
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TO THE RESEARCHES OF A MACHINE FOR EARTHING UP RATOON SHOOTS OF VEGETATIVE PROPAGATED APPLE STOCKS
DescriptionStable obtaining in high quality fruits in the required volumes for Russia is possible in the transfer of industrial gardening to intensive cultivation system. Planting of this type provide a high early appearance and productivity, high quality fruits and quick payback on investment in their creation means. All of this is formed in the nursery garden. Under these conditions, the development and introduction of innovative machine technologies for industrial production of sticks is an urgent task. The problem of mechanization of the technological operation for earthing up ratoon shoots of vegetative propagated stocks has been considered in this work. A perspective scheme of machine comprising two milling rotors which have a flanked line with axis of rotation parallel line plants proposed consequently analytic research constructions of technical means for earthing up ratoon shoots. The program of the research for parametrics milling barrel for earthing up ratoon of vegetative propagated apple stocks include defining the dependence impact of the kinematics indicators (forward and circumferential speed of labor body) and the constructive indicators (quantity of blade and angle of their setting) to qualitative criterion: structure of soil provide optimal establishment stocks, and form of swath. Attainment of agrotechnical demands for earthing up ratoon shoots of vegetative propagated stocks is provided by the given aggregate under circumferential speed of labor body υ=3,9 m/c, quantity of blades – 4 pieces and angle of setting blades on rotor γ = 10° …20° . The use of a universal complex for the work in queen cell with technological module for earthing up ratoon shoots will allow not only labor-saving, but also mark up leaving of qualitative ratoon
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RESEARCH OF PICKLING PROCESSES OF SALTED ALASKA POLLACK CAVIAR WITHOUT PRESERVATIVES
DescriptionThe article provides for an assessment of raw base of Alaska pollacks in the Okhotsk Sea, analysis and revealing of disadvantages of Alaska pollack caviar, description of a new technology, eliminating these disadvantages, worked out by the authors, and results of preliminary experiments.
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SOURCES OF UNINTERRUPTED AND AUTONOMOUS POWER SUPPLY
DescriptionThe article describes the main block diagrams of three types of uninterruptible power supply: backup; interactive; double conversion. The main functions are: the function backup or emergency source of electrical power; the function of protective devices (from an overload currents and short-circuit); improving the quality of the power supply voltage. Alsoб we have disclosed the features of the advantages and disadvantages of uninterruptible power supplies three groups: Off-Line / Stand-By / back-up UPS (passive - reserve); Line-Interactive (line interactive type); On-Line. The article discloses new approaches to structural and schematic-based uninterruptible power supply, including at use of renewable energy, so that the failure of one of the sources does not lead to exit from the operation of the entire of power supply system. As a rule, such systems are built on a modular principle. It is shown that now for remote users from external networks is advisable to apply a system autonomous power supply, representing the totality of sources and converters of electric power, ensuring uninterrupted power supply to consumers. We have presented a typical structure of autonomous systems and given an option of the block diagram of the system and are given explanations and principles of its work. Significantly improves performance reliability of autonomous systems using the modularity of its main functional units. In addition, to increase the efficiency of the system can be through the use in the construction of transformers with static converters rotating magnetic field. To improve the weight, which is important for the transport systems, it is necessary to use links with the intermediate high-frequency electric power conversion in static converters
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DC VOLTAGE SOURCES WITH IMPROVED OPERATIONAL AND TECHNICAL CHARACTERISTICS
DescriptionThe article discusses the new structural schematics and features of the DC voltage source with improved operational and technical characteristics