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Strebkov D.S.,RAS Research Institute for Electrification of Agriculture | Shepovalova O.V.,RAS Research Institute for Electrification of Agriculture
AIP Conference Proceedings | Year: 2017

In this work, the possibility of solar tiles structures development on the basis of stationary cylindrical parabolic concentrators and planar-type or multi-junction silicon solar cell has been studied. The designed structure has been analyzed and the characteristics of samples have been investigated for various application conditions. The outer dimensions, shape and weight correspond to those of conventional tiles. The calculated value of concentration ratio is 4.96 while its factually achieved value is 4. The effective aperture angle is in the range of 26.1°to 36°. The voltage in the maximum output power mode is 1V to 1.2V, for planar-type solar cells, and 2V to 3.2V, for multi-junction ones. The output power for experimental samples in standard test conditions (STC) is 8W, 10W, 16W, 20W and 24W depending on actual parameters of solar radiation receiver and optical deflector. © 2017 Author(s).


Shepovalova O.V.,RAS Research Institute for Electrification of Agriculture
AIP Conference Proceedings | Year: 2017

The possibility of manufacturing silicon matrix solar cells (MSC) on the base of multi-layer epitaxial structures with electrically broken reverse-biased p-n junctions has been investigated. As a result of technological processes studies, experimental dependencies and theoretical expressions have been obtained to determine the values of electrical breakdown voltages applied in the course of MSC multi-layer epitaxial structure fabrication. The optimal technological conditions and parameters of the MSC fabrication process have been defined. Experimental samples of MSCs have been studied. The output voltage of experimental samples is 0.3V to 0.6V per one p-n junction wile the efficiency is from 8% to 8.6%, for MSCs with ten n-p junctions, and it ranges from 8.2% to 8.5%, for MSCs with twelve n-p junctions. © 2017 Author(s).


Shepovalova O.V.,RAS Research Institute for Electrification of Agriculture
42nd ASES National Solar Conference 2013, SOLAR 2013, Including 42nd ASES Annual Conference and 38th National Passive Solar Conference | Year: 2013

The discussion of introduction of separate PV solar systems in Russia is presented with the analysis of their current state and difficulties of their implementations. The study of potential growth is given with the evaluation of demand, needs, technological changes, equipment supply, legal environment and government backing. The workflow and specifics of separate PV systems production in Russia are also studied with proposed solutions to common problems. The general PV system calculation framework is presented with some examples. Calculations, charts and diagrams are also present.


Kholmanskiy A.,RAS Research Institute for Electrification of Agriculture
Journal of Molecular Liquids | Year: 2016

Anomalies in temperature dependence (TD) for optical activity of water solutions for glucose, saccharose and dextran have been studied in temperature range of 2°C to 40°C. Abnormal fluctuations of specific rotatory power in solutions of sugars below 15°C have been discovered. Arrhenius approximation of TDs for chirality of solutions of sugars and a number of terpenes were applied to determine their activation energy to be in the range of 0.15 kJ/mol to 1.2 kJ/mol. These values were found to be identical to energies of free molecular rotation. It has been shown by comparative analysis of TDs for water physical properties and those of chirality of solutions of sugars and terpenes that the dynamics and kinetics of anomalies and fluctuations of chirality in water solutions of sugars are limited by abnormal thermodynamics of water. Reforming of water cluster structures has been associated with curving of TDs for chirality of sugars in temperature range of 20°C to 25°C. Interaction and incorporation of sugar molecules in clusters and supramolecular structures of water contribute to their stability and increase in lifetime. © 2016 Elsevier B.V. All rights reserved.


Kholmanskiy A.S.,RAS Research Institute for Electrification of Agriculture
Research Journal of Seed Science | Year: 2016

Temperature dependence of wheat seed swelling and sprouting kinetics in water in the range of 10-25EC for constant magnetic field (~104 Gs) has been studied. Grain weight growth was chosen to serve the parameter under control. Activation energies for swelling and germination processes have been estimated (43.5 and 47.5 kJ mol-1) of which the latter depended linearly on the share of hydrophilic substances in seeds. The assumption has been made that the quantum-cooperative phenomena in hydrate shells of biomolecules and clusters with correlated states of water spin-isomers define the adaptive physiology. Optimal temperatures of seed stratification and sprouting has been attributed to transitions between ice-like and spiral clusters. Magnetic field did not effect the kinetics of swelling but it slightly inhibited the rate of sprouting. Negative influence of magnetic field was explained by effect of Lorenz force on protons in the plain perpendicular to their motion in scutellum plasmalemma. © 2016 A.S. Kholmanskiy.


Kholmanskiy A.,RAS Research Institute for Electrification of Agriculture
Journal of Molecular Structure | Year: 2015

In this work, the nature of molecular motions that dominate in the thermodynamics of anomalies of liquid water properties in the range of 0-100 °C has been studied. Temperature dependencies of water properties have been approximated by exponential functions and the activation energies for water structure transitions have been evaluated. The activation energy values were compared with the energy spectra of characteristic vibrations and with those of cooperative molecular motion in the lattice-type structure of hydrogen bonds. It has been found that it is the reaction of hydrogen bond breaking that mainly limits the abnormal dynamics of water viscosity, self-diffusion, dielectric relaxation time and electric conductivity. It has been assumed that the thermodynamics of cooperative motion and resonance phenomena in water clusters form a basis for the differentiation mechanism of extrema points in temperature dependencies of water density, isobaric heat capacity, sound velocity, surface tension coefficient and compressibility. © 2015 Elsevier B.V. All rights reserved.


Strebkov D.S.,RAS Research Institute for Electrification of Agriculture
Thermal Engineering (English translation of Teploenergetika) | Year: 2015

Development of solar power engineering must be based on original innovative Russian and world technologies. It is necessary to develop promising Russian technologies of manufacturing of photovoltaic cells and semiconductor materials: chlorine-free technology for obtaining solar silicon; matrix solar cell technology with an efficiency of 25–30% upon the conversion of concentrated solar, thermal, and laser radiation; encapsulation technology for high-voltage silicon solar modules with a voltage up to 1000 V and a service life up to 50 years; new methods of concentration of solar radiation with the balancing illumination of photovoltaic cells at 50–100-fold concentration; and solar power systems with round-the-clock production of electrical energy that do not require energy storage devices and reserve sources of energy. The advanced tendency in silicon power engineering is the use of high-temperature reactions in heterogeneous modular silicate solutions for long-term (over one year) production of heat and electricity in the autonomous mode. © Pleiades Publishing, Inc., 2015.


Strebkov D.S.,RAS Research Institute for Electrification of Agriculture
Applied Solar Energy (English translation of Geliotekhnika) | Year: 2012

The paper suggests an energy model for the future world based on solar power engineering and new Russian energy technologies. Chlorine-free solar silicon technologies, stationary concentrators, solar mod- ules with service lives doubled up to 40 years, matrix solar elements with an efficiency factor of 20% at a con- centration of 5-500, and resonance waveguide methods for transmitting energy for solar energy systems are considered. © Allerton Press, Inc., 2012.


Kuntsevich P.A.,RAS Research Institute for Electrification of Agriculture
Russian Electrical Engineering | Year: 2014

Results of operation of wind turbines (windmills) contradict predictions regarding the effectiveness of their use, since they do not take into account the level of reliability. In this article, the scientific method is used for predicting the performance of the generating equipment - a method of probability factors for use in the event of wind turbines. © 2014 Allerton Press, Inc.


Shepovalova O.V.,RAS Research Institute for Electrification of Agriculture
Energy Procedia | Year: 2015

The project of large-scale stage-by-stage implementation of energy systems based on solar energy and other renewable energy sources (RES) in rural settlements of Russia has been worked out. Research was made based on the analysis of regional, climatic, social, economical and technical factors, proposed complex approach to energy supply of rural buildings and predictive estimates. Priorities, sequence of actions and the values of interstage and final indicators have been defined. The issues of RES implementations and measures on energy saving over vast, mainly poorly populated, rural territories have been considered. © 2015 The Authors. Published by Elsevier Ltd.

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