RENEWABLE ENERGY
There was considered the problem of possibility of use of non-traditional and renewable sources of energy, energy saving and energy provision for separate economically independent region of Russia developing in the conditions of market relations. There was substantiated the question of urgency of preparation of highly qualified cadres in specialization “Renewable sources of energy” for energetic enterprises of Krasnodar region. There were considered the peculiarities of energetic on the basis of non-traditional and renewable sources of energy. There were cited the functioning enterprises successfully on which the non-traditional and combined installations of energy supply were used.
This paper presents a history of substantiation of hydraulic units reliability, mathematical simulation of unique hydro-power objects. Based on legal regulations, the authors performed parameters evaluation of a steel case and armature of penstocks of high-head turbines. A method of multi-layer spatial simulation of water pathways is presented in the paper, its advantages are determined.
This paper presents a shock pressure determination method in a penstock at regulator devices closing. A system of resolving equations that describe a nonsteady motion of liquid in water channel of hydropower plant is described in the paper. Hydrodynamic loads are determined based on the example of Sayano-Shushenskaya hydropower plant water channel. For minimum pressure excess, the authors recommend the time of emergency-repair gate closure at simultaneous closing of a guide vane.
The results of modeling and investigation of solar photovoltaic power plant modes with maximum power tracking controller are represented. The most widespread methods for maximum power point tracking of solar panels are considered. The DC voltage method, no-load method, short circuit method, method of random disturbances and conductance increment method are reviewed. Complex photovoltaic plant model, including solar panel, power converter with controller, is created. The results of system’s operating modes simulation when changing the insolation and the temperature of the solar cell are represented. The review of the various methods to search for the maximum power of the solar cell conducted and the analysis of their performance under different climatic conditions can be useful for a wide circle of professionals in the field of photovoltaics. All the proposed models of photovoltaic systems components are implemented in MATLAB/Simulink, which allow their use after a simple revision for the investigation of any systems with other types of converters and maximum power tracking controllers.
The production of steam using solar energy concentrator for different climate zones is investigated. The method for calculating the capacity of the solar concentrator located at an arbitrary angle to the horizon is given. The characteristics of the cylindrical-parabolic concentrator according to the magnitude of the incoming solar radiation are calculated. The steam generation by solar concentrator at different values of solar radiation are determined. The daily generation of steam in July, for the conditions of Russia (Ekaterinburg), Tajikistan and Egypt is calculated. The experimental tests for conditions of Russia for the purpose of verification methods for determining the performance of the concentrator, the results of which coincided with the calculated values are conducted. The average daily value of the specific consumption of steam generated by the concentrator will be 137 g/(m2·h) for Russia, 190 g/(m2·h) for Tajikistan, and 214 g/(m2·h) for Egypt. Perhaps the widespread use of solar concentrator to produce steam for technological and domestic needs in countries wealthy by solar radiation.
The paper discusses the new photovoltaic modules, which include photodetectors and hubs and provide efficient conversion of solar energy into heat and electricity. The mathematical modeling to create a design algorithm for calculating thermal solar module with the specified energy parameters and using the laws of geometric optics, as well as heat and mass transfer. Mathematical models for calculating the optical parameters of the solar energy module ruled photodetector and secondary reflectors asymmetric parabolic-cylindrical concentrator. Showing calculated according to the following: the concentration distribution of light on the surface of the detector of the line on the width of the focal region; angle of total reflection of the secondary reflectors concentrated radiation from the parametric angle γ; the geometric dimensions of the upper and lower reflectors from the parametric angle γ; coordinate location (profile) of the secondary reflector relative to the photodetector. Profile module (on the basis of which patterns are drawn in Avtocad for manufacturing the hub unit and as a whole); the longitudinal shading photodetector depending ΔL time interval tp idle engine tracking system, the number of intervals (engine running) per unit time k by the angle of deviation (parametric angle γ) of the incident solar radiation on the midsection hub, depending on engine power consumption tracking system. The use of such modules is based parabolic-cylindrical concentrator and a photodetector with a coolant flow system allows the creation of co-generation plants to generate electricity and heat. Prototypes were developed by this method being explored at the respective stands and tested in field conditions.
In this article advantages, structure and functions of the innovative-demonstration platforms designed with use of wave wind turbines are considered. Use of potential of such innovative projects promotes involvement of the interested groups of people to ecological development of the territory, its advance and ecologically conscious positioning. Expediency of use of development of alternative wind power in a sustainable development of territories of not having unique climatic, biological and historical factors, and opposite, having negative ecological and biological reputation is proved. The most widespread problems of wind turbines now in use are formulated. They are connected with use as a driving force – force of front resistance or carrying power and have a horizontal or vertical axis of rotation that affects the level of acoustic noise in the field of low and the infralow of frequencies. Advantages of design kinetic sculptures which cornerstone the wave principle of transformation of wind power is are revealed. They consist in esthetic appeal, safety, low noise level, possibility of use of sculptures directly near visitors of platforms. The conclusion is drawn on a high potential contribution of innovative-demonstration platforms to improvement of social and investment climate of territories within a sustainable development of the region or separate administrative and territorial units, additional ecological demonstration actions are offered.
In the introduction to a critical analysis of technologies adopted in the last time, her practice in the processing of waste agricultural and industrial production, as well as the estimation methods for describing the energy-saving technologies. In the photosynthesis of the basic photochemical processes in the development of plants. A quantitative estimation of the carbon content in different parts of the biosphere. It is shown that an imbalance of the synthesis products (consumption) and disposal can lead to irreversible environmental consequences. The processes of photosynthesis in plants and found that the rate of these processes depends on the external conditions and anthropogenic impacts on the environment. The paper analyzes the converted equation of photosynthesis and analyzes the mechanisms of electronic transitions in plant cells. When considering the physical and chemical nature of photosynthesis revealed that the main source of energy stored by plants is solar emition, and included in the structure of plant enzymes and conversion system is a complex mechanism for the conversion of solar energy into biomass. In the analysis of the absorption spectra of plant cell shows that the main types of flora have characteristic absorption spectra, the maximum length of which lie in the region, red and violet emition. The main visible part of the spectrum (yellow, green, blue), is generally reflected the biological object. Based on the spectral absorption characteristics of plants conclusions that to improve the efficiency of energy-saving technologies should be used not traditional sources of artificial light used for growing plants (mercury vapor lamps), and constructed on the basis of cost and LEDs with long service life LED transformation-verter. The analysis of the rate of energy conversion processes in B-tems with different sensitivity and shown that this process can be optimized by the use of systems, allowing use of light flux control artificial sources of emition. The ecological processes associated with the development of the plant in terms of the influence of the ambient temperature and the water regime of compliance to accumulate biomass.
The article proposes the transfer of small-scale agriculture to self-sufficiency in electricity production of biodiesel grown vegetable oil (or waste oil) and isopropyl alcohol. Is inexpensive and a small microwave plant as a major producer of biofuels. There are application of an electromagnetic field of microwave frequency range greatly speeds up the process of obtaining biodiesel. Adding nanoactivators improves the efficiency of fuel on 10-20%.
HYDROGEN ECONOMY
The catalytic filling impeded two-chamber circulating fluidized bed reactor meant for methane steam reforming synthesis gas production was described. Experimental data conform satisfactorily to the process simulation. Optimum parameters of the analyzed reactor were found on the basis of heat balance equation set for two chambers and tabled dependence between methane steam reforming products equilibrium concentrations and temperature with the ratio CH4:H2O = 1:1.
STRUCTURAL MATERIALS
In this article through joint cationic and anionic doping brawnmillerite Ba2In2O5 compounds obtained from the homogeneity range Ba0.8-0.5хLa1.2In2O5.6-хFx (0 ≤ х ≤ 0.2). It is established that structures are characterized by cubic symmetry (space group Pm3m) by the method of the full-profile analysis of Rietveld. It is proved these phases are capable to high-temperature protonic conductivity. It was found that mixed anion effect comprising the growth of electrical conductivity at low concentrations of fluoride observed for the Ba0.8-0.5хLa1.2In2O5.6-хFx.
ENVIRONMENTAL ASPECTS OF ENERGY
The problem of Intentional Destructive Electromagnetic Impacts (IDEI) on power systems becomes recently more and more actual in connection with two modern trends: an extending application of microelectronics and microprocessor-based devices and systems in electric power industry - on the one hand, and intensive designs special equipment for distance destruction of electronic devices and systems - with another. The most powerful method for such destruction is the High-altitude Electromagnetic Pulse (HEMP) as a result of high-altitude nuclear explosion. The history of experimental high-altitude nuclear explosions includes already half a century. During this time many tens the scientific articles and books in details presenting this phenomenon and measures of protection from it, have been published. In view of this fact, it would be possible to assume, that the problem of protection against HEMP for a long time is solved and modern power systems are well protected from this phenomenon. The research performed by the author, displays, that actually it not and for the last decades in one country of the world is not undertaken any practical measures on protection of national infrastructures against HEMP and all is restricted only to writing of reports, recommendations and guidelines. In the paper the reasons for such situation (in particular, political and military aspects of the problem) are analyzed.
ENVIRONMENTAL VEHICLES
Amphibious hovercrafts (AH) are shown to be promising as an energy and environmentally efficient solution of the transport problems of the Russian north, but the known designs are not fit for it. A new software package has been developed for support of R&D of new AH designs, which implements mathematical models of AH, that take into account the dynamics of AH movement on water and solid horizontal and inclined surfaces with different roughness and large obstacles (ridges), various types of propulsors (contact wheels, aerodynamic propellers, paddle wheels), skirts (classical and consisting of flexible cones), blowers, motors, etc. Detailed 3D calculations have been carried out. The advantages of new, nontraditional designs of AH for the Russian North are shown.
The method for preparation of the electrode material based on polyaniline (PAni) doped by p-toluenesulfonic acid (PTSA) has been developed. PAni-(PTSA)0.5 was prepared by mixing solutions of emeraldine base (EB) and PTSA in formic acid at a 1 mol of PTSA to 2 monomer units ratio in the polyaniline chain. Electrochemical properties of the PAni-PTSA film casted onto a Ni support have been studied using cyclic voltammetry (CVA) and charge-discharge curves in 1М LiClO4 in propylene carbonate. It has been shown that the insertion of PTSA provides quickly attained steady state of CVA and enhances noticeably capacity of the PAni-PTSA electrode in aprotic Li electrolyte. If charge-discharge current is increased from 1 A/g to 10 A/g, capacity changes insignificantly from 260 F/g to 244 F/g, respectively. The effect of PTSA embedded in PAni as dopant at a stage of the formation of a polymer matrix on morphology, crystallinity, and conductivity of PAni-(PTSA)0.5 was studied by IR spectroscopy, X-ray analysis, and scanning electron microscopy.
OPTICAL PHENOMENA AND FACILITIES
In devices for measuring photovision applied sensors on the basis of photoresistors, photodiodes, vacuum and gas-filled photocells. These photosensors have to add filters and system filters. On the experimental data found that as of photosensors, you can use the LEDs. In laboratory tests, the LEDs of different colors of light react to individual optical radiation. LEDs are not sensitive to radiation with a wavelength longer than at which they emit light. Established that the maximum sensitivity of all LEDs a bit is shifted into the region of shorter wavelength than which the led emits. On the basis of led sensors can make the light meter, RGB-sensors, photosynthesis active radiation and measuring the near UV radiation. With the function of relative spectral luminous efficacy of monochromatic radiation for night vision coincides sensitivity of yellow led with a wavelength of 590 nm. With the function of relative spectral luminous efficacy of monochromatic radiation for daylight vision matches the sensitivity of red LEDs with a wavelength of 625 and 628 nm. To create RGB sensors need LEDs with operating wavelengths 660, 625 and 525 nm. There is no need to use corrective filters.
ISSUES OF AGRICULTURE
Application of modular models, use in them of standard mathematical dependences for consideration and the forecast of a course of processes as a part of uniform agro technological systems is considered.
To conduct soil sampling it was decided to use a system based on mobile robot helicopter type - quadrocopter. To calculate the system we took maximum critical conditions, when the maximum amount of soil and it loose. After the calculation drive of sampling model was created with a conical drill with a cutting edge.
The ecological clean way of the destruction weeds by pulse of high power is offered. The methods of the study of the influence high-tension pulse to root system of the rubbish plants and methods of the determination degree damages of the root system after influence are brought. The methods of the study of the influence high-tension pulse to root system of the rubbish plants and methods of the determination degree damages of the root system after influence are brought. Dependencies degree damages root бодяка field from depth of its location and moisture of ground at voltage of the processing 20 kV and energy pulse 10 J are received.