scholarly journals THE ANALYSIS OF THE USAGE AND PERSPECTIVES OF RENEWABLE ENERGY SOURCES IN LITHUANIA / ATSINAUJINANČIŲ ŠALTINIŲ PANAUDOJIMO IR PERSPEKTYVŲ LIETUVOJE ANALIZĖ

2011 ◽  
Vol 3 (1) ◽  
pp. 73-77
Author(s):  
Dominykas Vasarevičius
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Renewable Energy Sources ◽  
Climatic Conditions ◽  
Energy Utilization ◽  
Energy Sources ◽  
Solar Thermal Energy ◽  
Policy Model ◽  
Advantages And Disadvantages ◽  
Private Households

The paper presents the current situation with the renewable energy sources in Lithuania. An overview of legislation promoting the production and usage of renewable energy in Lithuania is presented. Renewable energy production methods suitable for Lithuanian conditions, their advantages and disadvantages are discussed. It is shown that there is no any promotion from the state for usage of solar energy in private households. The potential of solar energy usage is determined. In order to show the effectiveness of solar thermal energy utilization under similar climatic conditions presented the example of promotion policy model and its results in Poland.

scholarly journals DEVELOPMENT OF SOLAR ENERGY IN UKRAINE IN THE CONTEXT OF THE TRANSITION TO THE CARBON-NEUTRAL ECONOMY

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
T. Pimonenko ◽  
O. Lyulyov ◽  
N. Letunovska ◽  
O. Lytvynenko ◽  
A. Nazarenko
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Developed Countries ◽  
Energy Sources ◽  
Advantages And Disadvantages ◽  
Alternative Energy Sources ◽  
Research And Innovation ◽  
Leading Position

The article aims to study current trends in the use of solar energy in Ukraine and the world as one of the main directions of decarbonization of the national economy. The authors systematize the prospects, advantages and disadvantages of the development of renewable energy sources. They conducted a comparative analysis of the "efficiency" of solar energy in some countries and Ukraine. The authors determined that the leading position in terms of the share of energy consumed from renewable sources is occupied by countries with developed economies due to the availability of effective motivational mechanisms. From the experience of EU countries, the authors concluded that renewable energy sources form a prerequisite for obtaining additional socio-economic and environmental effects. In the presence of favorable market conditions, renewable energy sources can increase the level of energy security in the country and its energy independence. The article analyzes the legislation of Ukraine on stimulating the development of alternative energy. The authors proposed two opposed ways of further developing solar energy in Ukraine. In particular, the country can implement methods of using alternative energy, which developed countries have successfully implemented. Another area involves increasing research and innovation in implementing, using, maintaining, and utilizing energy-generating devices from alternative energy sources. Despite the polarity of the proposed directions for further development of renewable energy, in both cases, the state policy on attracting investment and promoting the use of energy from alternative energy sources is crucial. In addition, the authors noted the benefits for society from the development and implementation of alternative energy sources. The scaling up and promotion of energy production technologies from alternative sources can reduce carbon emissions, which has been an urgent problem globally.

scholarly journals PROSPECTS FOR RENEWABLE ENERGY FOR LOW-RISE BUILDINGS IN CRIMEA

2020 ◽  
pp. 85-93
Author(s):  
N. V. Tsopa ◽  
A. E. Dikarev
Keyword(s):  
European Union ◽  
Renewable Energy ◽  
Solar Energy ◽  
Power Supply ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
The European Union ◽  
Advantages And Disadvantages ◽  
The World ◽  
The Crimea

in the article provides a comparative analysis of the development of solar energy in the world, in the European Union, in Russia and in Crimea; the advantages and disadvantages of the use of solar energy, the features of the use of renewable energy sources are considered, the use of solar energy in the Crimea is justified; describes the mechanism of a feasibility study for the use of autonomous power supply for low-rise buildings in Crimea.

scholarly journals Carbon-based Nanofluid Applications in Solar Thermal Energy

2019 ◽  
Vol 111 ◽  
pp. 01056
Author(s):  
Nur Çobanoğlu ◽  
Ziya Haktan Karadeniz ◽  
Alpaslan Turgut
Keyword(s):  
Heat Transfer ◽  
Renewable Energy ◽  
Solar Energy ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Solar Thermal ◽  
Heat Transfer Fluid ◽  
Energy Sources ◽  
Solar Thermal Energy ◽  
Thermal Systems

Renewable energy sources such as solar, wind and geothermal are proposed as an alternative to fossil fuels whose excessive use causes global warming. The most popular one of the renewable energy sources is considered as solar energy due to the fact that required energy is provided by the sun entire year around the world. Solar energy systems convert the solar radiation to the useful heat or electricity. In order to achieve better performance in solar thermal systems many studies have been conducted. Some of these studies suggest that heat transfer fluid could be changed with the nanofluids which can be defined as new generation heat transfer fluid. Nanofluids are suspensions of nano-sized particles such as metals, metal-oxides, and Carbon-allotropes (C), in the conventional base-fluids (water, ethylene glycol and oil). Using nanofluid enhances the efficiency and thermal performance of solar systems due to their better thermophysical and optical properties. Recently, C-based nanofluids are getting attention due to their enhanced thermal conductivity and absorptivity at even low concentrations. The results show that C-based nanofluids have a potential to use in solar energy systems: solar collectors, solar stills, photovoltaic/thermal systems.

scholarly journals SOLAR POWER DEVELOPMENT PROSPECTS

2022 ◽  
Vol 1 (15) ◽  
pp. 62-65
Author(s):  
Yuriy Konovalov ◽  
Aleksey Luk'yanov
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Power Development ◽  
Advantages And Disadvantages ◽  
Development Prospects ◽  
Energy Converters

Renewable energy sources are considered, the most promising ones are highlighted, the advantages and disadvantages of solar energy converters are analyzed. Trends in the development of solar energy are considered

scholarly journals Analysis of Solar Energy Utilization Effect of Air-Based Photovoltaic/Thermal System

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8586
Author(s):  
Youngjin Choi ◽  
Hyun Bae Kim
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Carbon Dioxide Emissions ◽  
Collection Efficiency ◽  
Renewable Energy Sources ◽  
Ease Of Use ◽  
Hot Water ◽  
Energy Utilization ◽  
Energy Sources ◽  
Solar Energy Utilization

Recently, the use of new and renewable energy sources to reduce carbon dioxide emissions and minimize global warming has attracted attention. Among the different renewable energy sources, solar energy is utilized for energy reduction in buildings because of its ease of use and excellent maintenance and repair. In this study, an air-based photovoltaic/thermal (PVT) system that improves solar energy utilization was developed, and its performance was experimentally compared with that of the existing photovoltaic (PV) system. The PVT system could increase the amount of generated power by decreasing the panel temperature raised by the air passing through the lower part of the panel. Moreover, it was possible to use the high-temperature air collected from the panel for heating or hot-water supply in the building. Based on the experimental results obtained for the PV and PVT panels subjected to the same weather conditions, the power generation efficiency of the PVT panel through which air was passed increased by approximately 10.1% compared to that of the PV panel. In addition, a heat collection efficiency of approximately 46.6% was generated by the temperature increase of the air passing through the PVT panel.

scholarly journals Agricultural Residue Management for Sustainable Power Generation: The Poland Case Study

2021 ◽  
Vol 11 (13) ◽  
pp. 5907
Author(s):  
Valerii Havrysh ◽  
Antonina Kalinichenko ◽  
Anna Brzozowska ◽  
Jan Stebila
Keyword(s):  
Power Generation ◽  
Spatial Distribution ◽  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Agricultural Waste ◽  
Energy Utilization ◽  
Evaluation Methodology ◽  
Energy Sources ◽  
Energy Potential ◽  
Agricultural Residue

The European Union has set targets for renewable energy utilization. Poland is a member of the EU, and its authorities support an increase in renewable energy use. The background of this study is based on the role of renewable energy sources in improving energy security and mitigation of climate change. Agricultural waste is of a significant role in bioenergy. However, there is a lack of integrated methodology for the measurement of its potential. The possibility of developing an integrated evaluation methodology for renewable energy potential and its spatial distribution was assumed as the hypothesis. The novelty of this study is the integration of two renewable energy sources: crop residues and animal husbandry waste (for biogas). To determine agricultural waste energy potential, we took into account straw requirements for stock-raising and soil conservation. The total energy potential of agricultural waste was estimated at 279.94 PJ. It can cover up to 15% of national power generation. The spatial distribution of the agricultural residue energy potential was examined. This information can be used to predict appropriate locations for biomass-based power generation facilities. The potential reduction in carbon dioxide emissions ranges from 25.7 to 33.5 Mt per year.

scholarly journals Multi-Criteria Decision-Making (MCDM) for the Assessment of Renewable Energy Technologies in a Household: A Review

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1164 ◽  
Author(s):  
Indre Siksnelyte-Butkiene ◽  
Edmundas Kazimieras Zavadskas ◽  
Dalia Streimikiene
Keyword(s):  
Decision Making ◽  
Renewable Energy ◽  
Scientific Literature ◽  
Renewable Energy Sources ◽  
Multiple Criteria Decision Making ◽  
Energy Sources ◽  
Renewable Energy Technologies ◽  
Advantages And Disadvantages ◽  
Energy Technologies ◽  
Depth Analysis

Different power generation technologies have different advantages and disadvantages. However, if compared to traditional energy sources, renewable energy sources provide a possibility to solve the climate change and economic decarbonization issues that are so relevant today. Therefore, the analysis and evaluation of renewable energy technologies has been receiving increasing attention in the politics of different countries and the scientific literature. The household sector consumes almost one third of all energy produced, thus studies on the evaluation of renewable energy production technologies in households are very important. This article reviews the scientific literature that have used multiple-criteria decision-making (MCDM) methods as a key tool to evaluate renewable energy technologies in households. The findings of the conducted research are categorized according to the objectives pursued and the criteria on which the evaluation was based are discussed. The article also provides an overview and in-depth analysis of MCDM methods and distinguishes the main advantages and disadvantages of using them to evaluate technologies in households.

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.

TINJAUAN SINGKAT OPTIMALISASI PEMANFAATAN ENERGI SURYA PADA SEKTOR RUMAH TANGGA

2021 ◽  
Vol 4 (2) ◽  
Author(s):  
Ligan Budi Pratomo ◽  
Nazaruddin Sinaga
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Energy Use ◽  
Solar Power ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Energy Utilization ◽  
Fossil Energy ◽  
Household Sector ◽  
The Government

Energy use always increases, especially fossil energy. Through the National Energy Policy, the government continues to strive to increase the role of new and renewable energy sources so as to reduce dependence on fossil energy. Solar power generation is a type of renewable energy generator that capable to convert solar energy to electric energy. The main components of solar power generatios are batteries, solar panels, charger controllers, and inverters.  Solar power generations technology itself is always being developed, such as automatic monitoring and sun tracking systems designed to improve system performance. One of the applications of solar power generations is in the household sector. In this sector consumes 49% of the national electricity energy in 2018. This type of generator is categorized as a roof solar power generations. Based on existing data, there were 1400  roof solar power generations users in September 2019. The development of solar energy utilization for the household sector is very appropriate because it can help achieve renewable energy about 23% in 2025 and 31% in 2050 in the national energy mix.

Renewable Energy Sources Development in Rural Areas of African Countries

2019 ◽  
pp. 154-167 ◽  
Author(s):  
Liudmila V. Nefedova ◽  
Alexander Alexsvitch Solovyev ◽  
Olena Popova
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Rural Areas ◽  
Energy Supply ◽  
Sustainable Energy ◽  
Renewable Energy Sources ◽  
Energy Development ◽  
Energy Sources ◽  
African Countries ◽  
Decentralized Energy

The prospects of increasing access to electricity for the population of rural areas of Africa are considered. The main international funds and organizations aimed at sustainable energy development in Africa are described. An analysis of the state and possible options for using renewable energy sources for this purpose in decentralized energy supply through the creation of mini-grids or stand-alone systems is given. The risks by developing renewable energy sources in rural areas and modern mechanisms for financing in solar energy are presented.

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