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Alternative Energy and Ecology (ISJAEE)

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No 20 (2015)
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RENEWABLE ENERGY

14-18 872
Abstract
The article provides new thermodynamic characteristics obtained experimentally, and the eutectic compositions identified program reactions in multi-component systems based on salts of alkali and alkaline earth metals. The prospects and environmentalsafety of their use as phase-transition and thermo chemical heat storage materials in power plants based on renewable energy are compared with hydraulic accumulation.
19-24 600
Abstract

The authors of this article offer the float wave generator for autonomous energy consumers located around water areas far away from centralized power systems. The paper deals with the experimental study of the wave generator model and describes the methodology of the experiment. Studies have shown that the wave generator may be used as a source of electric power in autonomous power systems.

25-35 581
Abstract
The present study reviews the previously used methods of wave energy evaluation and the results of these evalu tions for the marginal seas of the Russian Federation. Currently in the international practice the methods based on the processing of data reanalysis (wind speed) and the mathematical modeling (characteristics of the waves) are widely used for the wave energy evaluation. This approach allows energy for large water areas, individual points or local areas. For a selected point of the Black Sea the authors have conducted assessment of the wave energy usin mulating Waves Nearshore). The calculations used the wind field at a height of 10 m, derived from reanalysis NCEP / NCAR, with a time step of 6 hours, and the spatial resolution of 1,875 ° (i period from 1948 to 2010. For a specific date the map of significant wave heights and transport of energy in the Black Sea was created. A set of such maps or maps of tion can be used for identifying water area that are most relevant to accommodate the wave power plants

NONRENEWABLE ENERGY

36-41 635
Abstract

The article shows results of research of obtaining uranium and thorium oxides in air plasma from burning water-organic compositions based on nitric solutions and ethanol (acetone). Authors estimate formulations of burning compositions and process modes that provide direct and energy-efficient obtaining oxide compositions UO2–ThO2. Findings could be used to create plasma technology of obtaining homogenous uranium and thorium oxide compounds for thorium fuel fabrication.

HYDROGEN ECONOMY

42-52 978
Abstract

Adopted technology allows engineers to test of propulsion plant (PP) on the stand with filling the fuel tank up to 2700 kg of hydrogen with implementation of special security measures and the use of systems emergency safety (SES), covering up to 60% of emergency situations. The paper considers  the additional security measures ensuring the test for the rocket propulsion plant upper stages with increased doses of refueling (up to 7000 kg), based on the principle of preserving the hierarchical construction of test programs. A key factor to improve the efficiency of systems alert fire and explosion, SES and coefficient enrollment of emergency situations (0.8–0.9) is the research on systems of the earlier hydrogen leak detection and the use of inhibitors with nitrogen-deterrent to prevent an explosion of hydrogen and air (or oxygen) mixtures. The paper demonstrates the research results of the earlier hydrogen leak detection systems and implementation of plants for comparative testing for sensors for hydrogen dangerous concentration monitoring.

STRUCTURAL MATERIALS

53-73 1184
Abstract

A number of interesting effects such as giant magnetoresistance, the anomalous Hall effect and some others are observed in nanogranulated ferromagnet-semiconductor composites and multilayer-structures based on the composites. The nature of the effects is not fully investigated up to now. In some cases there is the discovery of new effects. For example, in granular superparamagnetic / semiconductor (metal) multilayer systems a new physical phenomenon (the ordering of the granules magnetic moments) was experimentally observed in a certain range of thickness of the semiconductor layers. The physical nature of the phenomenon has no theoretical explanation. Besides that these multilayer systems exhibit a very promising for practical application magnetic properties in high-frequency region. The odd magnetic thermoelectric power is expected to appearance in the laminate ferromagnetic-piezoelectric composite. This odd effect is important in the development of magnetic field sensors, which can not only measure the magnetic (or electric) field but also can measure its polarity.

ENVIRONMENTAL ASPECTS OF ENERGY

74-91 755
Abstract

The paper deals with a method of reduction of aerodynamic drag of a high-speed vehicle by means of active modification of the airflow with injection of light gas with high speed of sound, which can also mitigate the surface heating load. Analytical and numerical researches are carried out. An experimental model of the system of the isobaric modes implementation is created and tested in a wind tunnel for the first time. The results show power efficiency and possibility of realization of the isobaric modes of active airflow modification. An example of possible application of the isobaric modes to reduce the aerodynamic drag of a high speed vehicle is considered; it made it possible to halve the launch mass of the vehicle as compared with a vehicle with a solid propellant engine.


ENVIRONMENTAL VEHICLES

92-101 567
Abstract

The paper deals with the engine that can be used to move any objects at any directions. The engine comprises the orthogonal turbines with jet propulsion control flow blades. To do this, there are some cavities in the body of the blade; and the stream formed by the combustion of the fuel mixture flowing through the traverses is discharged into the surface of the blades at high speed. The blades through the hollow arm are connected with the hollow shaft. Inside the shaft coaxially aligned it with the formation of the annular gap has a hollow distributor pipe with holes in the wall through which the cavity distribution pipeline communicates with the cavities traverse in moments of coincidence of the axes of the holes and traverse. The distribution pipeline is connected to a source of fuel-air mixture under pressure. In each cavity of the blade set of spark plugs connected to the induction coil.

102-109 759
Abstract

The article considers the receiving and research of physical and chemical properties of polymeric electrolyte with Li-ion conductivity. There is rather detailed description of technological process of polymeric electrolyte production, research of conductivity of polymeric electrolyte in a wide interval of temperatures, also infrared spectroscopy and the X-ray diffraction analysis. It is shown that the electrolyte can be applied at production of energy converters of film structure.

110-116 587
Abstract

The article considers the possibility of using intercalated oxides of nickel as cathode material of current source with a solid electrolyte β-Al2O3. It is established that at the functioning of solid-state electrochemical system Na(Hg)/β-Al2O3/Na0,2NiO2, the reaction product is a solid electrolyte with a conductivity of alkali metal ions. There are obtained electrical characteristics of laboratory model chemical current source.

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ISSN 1608-8298 (Print)