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ZONES OF STEADY CAPACITOR EXCITATION IN A MODE OF GENERATION OF TYPICAL ASYNCHRONOUS MACHINES
Authors: Postoronсa Sv., Bârladeanu A., Berzan V., Tîrşu V., Ermurachi Iu
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Abstract: In work some features of a mode of capacitor excitation of industrial asynchronous electric motors, and also generators made on their base which can be used in wind installations of low power are considered. Borders of zones of steady capacitor excitation of asynchronous electric motors in rated power of 0,25-22,0 kW and generators made on their base, and also character of influence of own losses and active capacity of loading of the equivalent circuit of the asynchronous machine resulted in parameters have been determined. Some recommendations after maintenance of stability of capacitor excitation of asynchronous machines for work in a mode of generation of electric energy are given. |
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Keywords: induction machine, capacitive excitation, generator.
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| 2 |
MEMBRANOUS FLOWS IN GAS-LIQUID COLLECTORS-REGENERATORS OF SOLAR ABSORPTIVE SYSTEMS FEATURES
Authors: Doroshenko А.V., Kirillov V.H.
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Abstract: Article is devoted to the creation of new generation of solar collectors of the gas-liquid type, intended for use in alternative refrigerating and conditioning systems of drying-evaporating type with direct solar regeneration of absorbent. Special attention is given to the study of membranous flows features on inclined surfaces, including questions of such flows stability. |
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Keywords: absorptive systems, solar collector, membranous flows, stability.
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| 3 |
WATER ACCUMULATOR OF SOLAR ENERGY
Authors: Kapralov A.I.
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Abstract: It is presented the construction of a simple solar water heater for sanitary needs of the rural and suburban consumers and its field tests results. |
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Keywords: solar radiation, transparent heat insulation.
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| 4 |
DETERMINATION OF HEAT LOSS FACTOR OF SOLAR ENERGY COLLECTOR WITH THE ABSORBER MADE FROM POLYMERIC PIPES
Authors: Ermuratskii V.
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Abstract: It is studied thermal loss factor of solar energy collector, which absorber represents the register made from polymeric pipes. Input data are results of tests in non-stationary thermal regime at the zero water flow rate and the minimum sunlight. |
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Keywords: solar energy collector, absorber from polymeric pipes, thermal loss factor.
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ELABORATION AND TESTING OF SOFTWARE FOR SIGNAL PROCESSING OF RESISTIVE HIGH VOLTAGE DIVIDER
Authors: Sit М., Juravleov А., Timcenco D., Sit B.
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Abstract: Mathematical tools and the software for input in the computer of signals of a resistive divider of a high voltage of the industrial frequency, providing a split-hair accuracy of measurement of parameters of the basic and harmonics which are divisible to the basic is developed. |
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Keywords: resistive high voltage divider, amplitude, phase, frequency.
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| 6 |
ENERGETIC CHARGE OF AN INFORMATION PROCESS
Authors: Popova T.M.
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Abstract: Main laws of technical thermodynamics are universal and could be applied to processes other than thermodynamic ones. The results of the comparison of peculiarities of irreversible informational and thermodynamic processes are presented in the article and a new term “Infopy” is used. A more precise definition of “infopy” as an energetic charge is given in the article. |
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Keywords: information; infopy; entropy; energy; thermodynamics.
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| 7 |
ENERGY EFFICIENCY DECREASE OF WINE PRODUCTION TECHNOLOGICAL PROCESSES DUE TO USE OF HEAT PUMPS AND HEAT PIPES
Authors: Balanuta A., (Technical University of Moldova) Sit M., Juravliov A., Sit B.,Timcenco D. (Institute of Power Engineering of the ASM), Burdo O., Bezbah V. (Odessa National Academy of Food Technologies)
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Abstract: Technological solutions for the use of heat pumps and heat pipes in wine-making are presented. The economic efficiency calculus of their use is shown as well. |
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Keywords: heat pump, heat pipe, energy, efficiency, wine-making, fermentation.
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| 8 |
TECHNIQUE OF DEFINITION TRANSMITTANCE- ABSORPTION PRODUCT OF THE SOLAR COLLECTOR WITH POLYMERIC TUBES ABSORBER
Authors: Ermuratskii V.V.
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Abstract: солнечный коллектор, трубчатый полимерный абсорбер, пропускательно - поглощательная способность, испытания в нестационарном режиме. |
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Keywords: solar collector, absorber, polymeric pipes, tests, non-stationary regime.
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| 9 |
POLISH EXPERIENCE IN THE FIELD OF RENEWABLE ENERGY SOURCES USE AS THE EXAMPLE FOR REPUBLIC OF MOLDOVA
Authors: M. Tirshu
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Abstract: In the given paper results of business trip to Poland of laboratory chief M.Tirsu are presented concerning experience of use of renewed energy sources in distinct Pomorsk, and also useful recommendations for Republic Moldova at use of experience of Poland in this field. |
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Keywords: renewable energy sources.
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