scholarly journals CURRENT STATE OF THE RENEWABLE SOURCES OF ENERGY USE IN SERBIA

2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Dragana Milosavljević ◽  
Tomislav Pavlovic ◽  
Dragoljub Mirjanić ◽  
Danica Piršl
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Wind Energy ◽  
Geothermal Energy ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Potential ◽  
Current State ◽  
Extensive Body

This paper reviews the current state of the renewable energy use in Serbia. Further on, the paper describes energy potential and gives examples of the use of solar energy, wind energy, hydropower, geothermal energy, biomass and biogas in Serbia. Extensive body of information is given about support systems and measures of incentives for the investment in the construction and sale of electricity from plants using renewable energy sources. In conclusion, achieved results of the use of renewable energy sources in Serbia and the incentives for their use are presented.

The greenhouse environment and energy use.

2021 ◽  
pp. 30-46
Author(s):  
Lynette Morgan
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Solar Energy ◽  
Geothermal Energy ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Carbon Dioxide Enrichment ◽  
Air Movement ◽  
Passive Solar

Abstract This chapter discusses the greenhouse environment and its energy use. Its heating, cooling, shading, ventilation and air movement, humidity, carbon dioxide enrichment, automation, energy use and conservation in protected cropping, renewable energy sources for protected cropping such as geothermal energy, solar energy, passive solar energy, wind-generated energy, biomass and biofuels are also discussed.

The greenhouse environment and energy use.

2021 ◽  
pp. 30-46
Author(s):  
Lynette Morgan
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Solar Energy ◽  
Geothermal Energy ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Carbon Dioxide Enrichment ◽  
Air Movement ◽  
Passive Solar

Abstract This chapter discusses the greenhouse environment and its energy use. Its heating, cooling, shading, ventilation and air movement, humidity, carbon dioxide enrichment, automation, energy use and conservation in protected cropping, renewable energy sources for protected cropping such as geothermal energy, solar energy, passive solar energy, wind-generated energy, biomass and biofuels are also discussed.

scholarly journals Wind Data Analysis and Wind Flow Simulation Over Large Areas

2014 ◽  
Vol 10 (1) ◽  
pp. 38-45
Author(s):  
Angel Terziev ◽  
Ivan Antonov ◽  
Rositsa Velichkova
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Wind Flow ◽  
Energy Potential ◽  
Wind Potential ◽  
Wind Energy Potential ◽  
The Impact

Abstract Increasing the share of renewable energy sources is one of the core policies of the European Union. This is because of the fact that this energy is essential in reducing the greenhouse gas emissions and securing energy supplies. Currently, the share of wind energy from all renewable energy sources is relatively low. The choice of location for a certain wind farm installation strongly depends on the wind potential. Therefore the accurate assessment of wind potential is extremely important. In the present paper an analysis is made on the impact of significant possible parameters on the determination of wind energy potential for relatively large areas. In the analysis the type of measurements (short- and long-term on-site measurements), the type of instrumentation and the terrain roughness factor are considered. The study on the impact of turbulence on the wind flow distribution over complex terrain is presented, and it is based on the real on-site data collected by the meteorological tall towers installed in the northern part of Bulgaria. By means of CFD based software a wind map is developed for relatively large areas. Different turbulent models in numerical calculations were tested and recommendations for the usage of the specific models in flows modeling over complex terrains are presented. The role of each parameter in wind map development is made. Different approaches for determination of wind energy potential based on the preliminary developed wind map are presented.

scholarly journals TECHNO-ECONOMIC ANALYSIS OF AN OFF-GRID HYBRID ENERGY SYSTEM WITH HOMER PRO

2021 ◽  
Vol 5 (3) ◽  
pp. 56-61
Author(s):  
Ahmet Erhan AKAN
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Economic Analysis ◽  
Energy Conversion ◽  
Renewable Energy Sources ◽  
Lithium Ion ◽  
Energy Sources ◽  
Renewable Energy Resources ◽  
Energy Potential ◽  
Economic Point

The decrease in fossil-based energy sources and increasing environmental problems increase the tendency to renewable energy sources day by day. The potential of renewable energy sources differs according to the region where the energy will be produced. For this reason, it is crucial to conduct a good feasibility study that deals with the selected systems from a technical and economic point of view before making an investment decision on energy conversion systems based on renewable energy sources. In this study, the most suitable equipment and capacities were investigated by examining the techno-economic analysis of a hybrid system created with wind-solar renewable energies for a detached house, which is considered off-grid, in a rural area of Tekirdağ province (40o58.7ı N, 27o30.7ı E). Investigations were carried out using the HOMER Pro (Hybrid Optimization Model for Electric Renewable) program. The wind and solar energy potential of Tekirdağ province were obtained from the NASA renewable energy resources database added to the HOMER Pro program. The daily electricity requirement of the sample house was chosen as 11.27 kWh, and the current peak electrical load was chosen as 2.39 kW. A wind turbine is connected to the AC busbars, solar collectors and battery group connected to the DC busbars, and a converter that converts energy between AC and DC busbars in the energy conversion system. In order to determine the optimum capacities of the system elements, 27486 different simulations were performed by HOMER Pro. The selection of the most suitable system among these was determined according to the lowest net present cost (NPC) value. In addition, the energy production capacities that will occur in the case of different wind speeds were also investigated. Accordingly, the system to be installed with a solar panel with a capacity of 6.25 kW, PV-MPPT with a capacity of 1 kW, 2 wind turbines with a capacity of 1 kW, 8 Lithium-ion batteries with a capacity of 6V-167 Ah, and a converter with a capacity of 2.5 kW has been determined will generate electrical energy of 5433 kWh per year. In addition, it has been determined that 61.8% of this produced energy will be obtained from solar energy and 38.2% from wind energy, and the simple payback period of the investment will be 14 years. It is thought that this study will provide valuable information to researchers and investors.

Use of the Savonius Wind Turbine for the Needs of Public Lighting

2014 ◽  
Vol 1008-1009 ◽  
pp. 179-182
Author(s):  
Iveta Gressová
Keyword(s):  
Energy Source ◽  
Renewable Energy ◽  
Wind Energy ◽  
Wind Turbine ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Geothermal Heat ◽  
Current Generation ◽  
Savonius Wind Turbine

Our planet gives us many mineral sources, but they have a big disadvantage. They are finite. Non-renewable energy sources are enough only for decades, exceptionally for centuries. Current generation is aware of the importance of using other energy sources, such as sunlight, wind, rain, tides, waves and geothermal heat. These energy sources are renewable. It means that they come from sources, which are naturally replenished on a human timescale. One of these sources is wind energy. Use of this kind of energy source needs an initial investment, but it can reduce cost of running a household and other sectors. This article is about Savonius wind turbine and its use for the needs of public lighting.

scholarly journals Regional Disparities and Features of Solar and Wind Energy Potential of Bulgaria

2021 ◽  
Vol 1 (5) ◽  
pp. 7-11
Author(s):  
Georgi Belev
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Alternative Energy ◽  
New Technologies ◽  
Global Climate ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Potential ◽  
Alternative Energy Sources ◽  
Wind Energy Potential

Global climate fluctuations and projections of deteriorating sustainable human development since the beginning of the 21st century have highlighted the need to look for alternative energy sources to carbon fuels. The utilization of solar and wind energy has become a challenge for engineers and technologists to develop new technologies for more efficient development of renewable energy sources. The purpose of this paper is to present the territorial features in the utilization of renewable energy sources – solar radiation and wind in Bulgaria. The study focuses on the regional features of the solar- and wind energy potential. Based on statistical data, the utilization of the RES potential is considered through a review of the installed capacities

scholarly journals Experimental Study of Energy Conversion of Daily Temperature Difference

2021 ◽  
Vol 2096 (1) ◽  
pp. 012133
Author(s):  
V Chelukhin ◽  
A Vasiliev ◽  
Pyae Zone Aung
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Wind Energy ◽  
Temperature Difference ◽  
Salt Water ◽  
Renewable Energy Sources ◽  
Temperature Drop ◽  
The United States ◽  
Green Energy ◽  
Energy Sources

Abstract Recently, more and more attention is paid to renewable energy. Recently, green energy or renewable energy is increasingly beginning to squeeze traditional energy based on the combustion of fossil fuels: coal, oil, and so on. Basically, the development of renewable energy sources comes from wind energy and solar energy. However, as recent situations in Germany, the United States and others have shown, wind energy has its drawbacks. This is, first of all, the instability of the power supply, as well as the difficulty of converting variable wind energy into direct alternating current for industrial use. Solar energy also has its drawbacks. This is the need for large areas, the need for just such sunny areas and the cleaning of solar panels from snow, dust and other precipitation. Today, there is a search for renewable energy sources in all directions, the most insignificant options are being considered, such as, for example, at the junction of fresh water, salt water, some kind of energy is released. The paper considers a method of obtaining energy using the temperature difference between day and night. At any point in the world, the temperature is always higher during the day, and always lower at night. This so-called temperature drop can be from 3 to 12.15 and more degrees, for example, in Urengoy in winter it can reach 60 degrees. It’s the same on the planets: on the moon, especially on Mars. There, the temperature difference between day and night is about 60-80 degrees, since Mars has no atmosphere.

Cost Analysis of Electricity Generation from Different Sources

2021 ◽  
Vol 7 (3) ◽  
Author(s):  
Al- Amin ◽  
Al- Amin ◽  
Al- Amin
Keyword(s):  
Renewable Energy ◽  
Cost Analysis ◽  
Wind Energy ◽  
Geothermal Energy ◽  
Energy Supply ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Total Cost ◽  
Different Sources

This paper discusses and analyzes the economics for total cost investment to produce electricity from different sources like Geothermal Energy, Wind Energy, Hydro, Nuclear, Solar, etc. Renewable energy is the focus of this study since it is both affordable and a superior solution than non-renewable energy. The world's nonrenewable energy supply is running out, and prices are rising rapidly. As a result, the use of renewable energy sources is steadily growing. The total installed cost of different sources from 2007-2019 is driven clearly in this paper. An overall discussion on electricity generation is also included in this paper.

scholarly journals PROSPECTS FOR THE DEVELOPMENT OF DISTRIBUTED GENERATION BASED ON RENEWABLE ENERGY SOURCES IN THE TERRITORY OF THE FAR EAST OF RUSSIA

2021 ◽  
pp. 68-71
Author(s):  
YULIA VLADIMIROVNA KHONDOSHKO ◽  
Keyword(s):  
Solar Wind ◽  
Renewable Energy ◽  
Distributed Generation ◽  
Geothermal Energy ◽  
Renewable Energy Sources ◽  
Far East ◽  
Energy Sources ◽  
Far East Of Russia ◽  
Energy Potential ◽  
The Far East

The article discusses the prospects for the development of distributed generation facilities based on renewable energy sources, assesses the energy potential of solar, wind, biomass, geothermal energy.

scholarly journals The Evaluating of Wind Energy Potential of Osmaniye

2020 ◽  
pp. 38-48
Author(s):  
C. Kurt ◽  
B. Yelmen ◽  
M. T. Çakir
Keyword(s):  
Renewable Energy ◽  
Wind Energy ◽  
Wind Turbines ◽  
Energy Demand ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Energy Sources ◽  
Wind Effect ◽  
Energy Potential ◽  
Wind Potential

In parallel with the rapid increase in energy consumption today, it is known that conventional energy resources will be exhausted in the near future. Renewable energy sources are becoming more important today with decreasing available fossil resources and increasing energy needs. Wind energy is a clean and renewable energy source and has a remarkable importance. Wind energy is one of the most important renewable energy sources, whose technology and use have developed rapidly and their economy has become competitive with fossil energy sources. The systems that convert the energy in the wind into electrical energy are wind turbines. Wind turbines are classified according to their rotational axes, revolutions, powers, number of wings, wind effect, gear characteristics and installation locations. Energy has become one of the most important problems of the world countries today. Energy demand, as in many countries, is increasing with each passing day in Turkey. For this reason, solutions are sought to provide the energy needed in a timely, sufficient and reliable manner. The energy needed in these solution suggestions should be provided from domestic production opportunities and local energy sources as much as possible. In this study, usability of wind energy is tried to be revealed in Osmaniye province and its surroundings. When the wind map studies in Turkey are examined, in Osmaniye Province it has been found that the presence of wind potential, it is necessary to increase the number of WPP to benefit more from the potential of wind energy.

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