scholarly journals Biogas as an alternative energy resource for Ukrainian companies: EU experience

2018 ◽  
Vol 14 (2) ◽  
pp. 7-15 ◽  
Author(s):  
Yuri Yevdokimov ◽  
Olena Chygryn ◽  
Tetyana Pimonenko ◽  
Oleksii Lyulyov
Keyword(s):  
Renewable Energy ◽  
Alternative Energy ◽  
Agricultural Sector ◽  
Biogas Production ◽  
Economic Effect ◽  
Energy Resource ◽  
Final Energy Consumption ◽  
The Eu ◽  
Feed In Tariff

The paper deals with analysis of the preconditions of alternative energy market development in Ukraine. In this case study, the authors analyzed the EU experience. The results of analysis showed that the leader of the EU countries in renewable energy has already achieved the target (20%), which had been indicated. In addition, the findings showed that the share of renewable energy in gross final energy consumption has been increasing from year to year. The authors allocate that, according to the Ukrainian potential, biogas is the most perspective one among alternative resources. Moreover, results of analysis showed that Ukraine has the huge potential of agricultural sector. In this direction, the authors allocated the main types of the agricultural activities, which have the highest potential of biogas production: sugar factories, corn silage and poultry farms. The authors underlined that biogas spreading is restrained by the stereotypes that green investments are not attractive for investors. In order to analyze the economic efficiency of investments to the biogas installation, the authors calculated the profit from the biogas installation for poultry farm. The authors made two scenarios for calculation. The first – the whole volume of energy, which was generated from the biogas unit, will be sold with feed-in tariff. The second – the farm covers its own needs in electricity, the rest will be sold with feed-in tariff. The findings showed that the first scenario is more attractive. Moreover, the farm could receive higher profit if it installed the biogas in 2016, not in 2017. In addition, based on the EU experience and features of farm functioning, the authors approved that the biogas installation has not only the economic effect (profit and additional profit) for company, but also ecological and social effects for rural area, where this farm was located.

scholarly journals Modern Trends in the Development of Renewable Energy: the Experience of the EU and Leading Countries of the World

2020 ◽  
pp. 117-133
Author(s):  
L.Hr. Melnyk ◽  
O.N. Derykolenko ◽  
Yu.O. Mazin ◽  
O.I. Matsenko ◽  
V.S. Piven
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Global Economy ◽  
Alternative Energy ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Alternative Energy Sources ◽  
The World ◽  
The Eu

Energy security and independence is one of the key points in sustainable development. In modern conditions of rapid growth and development of technologies, more and more attention is paid to finding practical solutions for environmentally friendly and inexpensive energy production. For a long time, scientists from various fields of scientific activity around the world have been engaged in the development and use of alternative energy sources. The share of renewable energy sources in the generation of electricity around the world is growing steadily, which indicates an increase in the use of energy obtained from alternative sources, such as, for example, wind and sun. These trends testify to the desire of consumers to abandon the use of fossil energy sources and nuclear power plants as much as possible in order to ensure further sister development. Under the current conditions of the COVID-19 pandemic, the demand for electricity worldwide has decreased, however, as the study shows, this pandemic has not affected the development of renewable energy. The article analyzes modern trends in the development of renewable energy, taking into account the experience of the EU countries and leading countries of the world in this area. As a result, it was concluded that in modern conditions, to achieve sustainable development, transformation processes are needed in such an important area as energy. Various processes in the global economy, which contributed to the intensive development of alternative energy sources, served as a powerful impetus for such changes. Many countries have made significant progress in the development of renewable energy.

Banana biomass as potential renewable energy resource: A Malaysian case study

2010 ◽  
Vol 14 (2) ◽  
pp. 798-805 ◽  
Author(s):  
Jing Yan Tock ◽  
Chin Lin Lai ◽  
Keat Teong Lee ◽  
Kok Tat Tan ◽  
Subhash Bhatia
Keyword(s):  
Renewable Energy ◽  
Energy Resource ◽  
Renewable Energy Resource

Energetic Study of Gasification System for Bio-Waste as Renewable Energy Resource: Case Study

2018 ◽  
Vol 388 ◽  
pp. 44-60
Author(s):  
Mojtaba Mirzaei ◽  
Mohammad Hossein Ahmadi ◽  
Mahyar Ghazvini ◽  
Ehsan Sobhani ◽  
Giulio Lorenzini ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Gas Turbines ◽  
Fixed Bed ◽  
Energy Resource ◽  
Fixed Bed Reactor ◽  
Renewable Energy Resource ◽  
Heating Value ◽  
Production Methods ◽  
Air Content

The expenses, which caused by pollution and limited fossil resources, have convinced scientists to concentrate on renewable resources such as biological waste. Conversion of bio-waste to syntheses gas produces higher heating values in comparison to conventional bioenergy production methods. To produce energy from bio waste, it is important to study on existing technology and using CHP and gas turbines. In this paper a plan for producing electricity and heat at the same time by using bio waste has been proposed. This plan provides a method to produce hybrid gas (combined gas) by using solid bio-waste of Tehran in two forms of wet and dry as a renewable energy resource and steam in a fixed bed gas reactor. This gas is a combination of Hydrogen, Carbon monoxide, Carbon dioxide Water and some amount of Methane. Selected temperature and pressure for the reactor respectively is1900 [˚F] and 390 [Psi]. As indicated in the results, the best air and steam combination entering fixed bed reactor among 60 different combinations for dry waste is 0.2% of entering fuel volume for steam 0.25% of entering fuel volume for air heating value for this combination is 6471 [BTU/lb]. Furthermore, for the steam volumes of 1.5% to 0.9%, the percentage of H2 in the syngas increases by enhancing the volume of air content.

Wind Potential Assessment for the Utilization from Wind Energy in the Household Level: A Case Study of Nakhonratchasima Thailand

2016 ◽  
Vol 835 ◽  
pp. 749-752
Author(s):  
Yuttachai Keawsuntia
Keyword(s):  
Wind Speed ◽  
Wind Energy ◽  
Alternative Energy ◽  
Energy Resource ◽  
Energy Utilization ◽  
Distribution Method ◽  
Household Level ◽  
Wind Speed Data ◽  
Wind Potential

Wind energy is an important alternative energy resource because of it clean, does not cause pollution and it can be used as replacement of a fossil fuel energy. Utilization of the wind energy, the wind speed data has to be analyzed to make sure before use it. In this article is to present the wind speed data analysis by using Weibull distribution method. Wind speed data from the meteorological station at Pakchong district, Nakhonratchasima province, Thailand was used as the case study. The results show that this area has wind speed about 2.5 to 3.5 m/s. The average wind power density was 17.513 W/m2 and the total wind energy was 153.9819 kW·hr/m2 per year. This wind potential of this area can be used for water pumping and electricity generating for use in a household.

scholarly journals Paper Modeling of Wind-Solar Hybrid Power System for Off-Grid in Nepal and a Case Study

2020 ◽  
Vol 15 (3) ◽  
pp. 360-367
Author(s):  
Khagendra Bahadur Thapa ◽  
Arbin Maharjan ◽  
Kishor Kaphle ◽  
Kishor Joshi ◽  
Tara Aryal
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Hybrid System ◽  
Alternative Energy ◽  
Storage System ◽  
Renewable Energy Resources ◽  
Hybrid Power System ◽  
Hybrid Power ◽  
Efficiency And Effectiveness

The adaptation of renewable energy has been increasing in a very encouraging way all over the world. Among various renewable energy resources, wind and solar energy are the promising sources of alternative energy. Wind and solar photovoltaic (PV) have been employed in parallel as a hybrid system for better electricity service. This paper presents a case study and modeling of wind-solar hybrid system in Hriharpur Gadi village, Sindhuli District, Nepal. The hybrid system yields 110kWh of energy per day meeting the village’s electricity demand of 87 kWh per day. Moreover, the hybrid power system with battery storage system is modeled using MATLAB simulator. Further, improvising in the existing modeling has been presented to enhance the efficiency and effectiveness of the system.

scholarly journals Biogas Production from Palm Oil Fruit Bunch in Anaerobic Biodigester through Liquid State (LS-AD) and Solid State (SS-AD) Method

2018 ◽  
Vol 156 ◽  
pp. 03043 ◽  
Author(s):  
Bakti Jos ◽  
Hanif Farhan ◽  
Nadia Dwi Ayu ◽  
Budiyono ◽  
Siswo Sumardiono
Keyword(s):  
Solid State ◽  
Palm Oil ◽  
Alternative Energy ◽  
Microbial Consortium ◽  
Biogas Production ◽  
Energy Resource ◽  
Total Solid ◽  
Raw Material ◽  
Solid State Method ◽  
Daily Production

The crucial problem facing the world today is energy resources. Waste production of palm oil fruit bunch potentially produce as renewable energy resource. Palm oil fruit bunch contains 44% cellulose, 18% lignin and 34% hemicellulose. Organic carbon source is contained in biomass potentially produce biogas. Biogas is one of alternative energy, which is environmentally friendly and has been widely developed. This research is aimed to examine the effect of pretreatment in raw material of waste palm oil fruit bunch for the production of biogas, the effect of time, ratio C/N, and effect of microbial consortium. The variables are total solid (TS) used 10% and 18% with a 40 mesh physical pretreatment, chemical pretreatment with NaOH 8% gr / gr TS, and biology 5% g/vol with microbial consortium. Biogas production process was conducted over 2 months in room temperature, the test response quantitative results in the form of biogas volume every 2 days and also flame test. The result of this research shows that the highest daily production rate of biogas obtained from this study was 5,73 ml/gr TS and the highest biogas production accumulation generated at 58,28 ml/gr TS produced through a 40 mesh sieve of waste oil palm empty fruit bunch, immersion in NaOH, through solid state fermentation and C/N 30. From this research, it can be concluded that the optimum production of biogas formation occurs with the value of C/N 30, physical and biological pretreatment, and solid state method.

scholarly journals STRUCTURAL CHANGES OF FARMER’S FARMS: CASE STUDY OF LITHUANIA

2018 ◽  
Author(s):  
Jurgita ZALECKIENĖ
Keyword(s):  
Rural Areas ◽  
Agricultural Production ◽  
Agricultural Development ◽  
Structural Changes ◽  
Agricultural Sector ◽  
Statistical Data ◽  
Family Farm ◽  
The Eu ◽  
Significant Factors

Due to historical circumstances, the development of Lithuanian commercial farmer’s farms is slow; however, farmer’s farms are very important to the vitality of rural areas while developing agricultural commodities and goods. The purpose of this article – to analyze the structural changes in farmer’s farms and present the directions of future development. Structural changes in Lithuanian farmer’s farms during the 2005 – 2015 timeframe were analyzed while looking at the diagnostic indicators, which are the following: the number of farmer’s farms, the structure of farmer’s farms according to their size, the activity units of farmer’s farms, age of farmers, farmer’s farms sources of income. In order to study the statistical data, methods of systemization, logical analysis and generalization were applied. The analysis of the statistical data suggests that the following structural changes are taking place in Lithuanian farmer’s farms: the number of registered farmer’s farms increases and the farmers’ are getting younger. One of the most significant factors causing the structural changes in holdings – the EU financial support for the agricultural development and the changing customer demands. More and more often rural areas perform residential function and new living areas are developed. There is a predominance of the small farms (up to 10 hectares). This is mainly a result of the reform in agricultural sector at the end of 20th century. Many small agricultural holdings were established due to this reform. However, significant changes occur while choosing and/or combining the activity units of the farm: the number of farms specializing in crops increases, the number of the holdings focusing on livestock and combined farming (crops and livestock) is declining; also, farmer’s farms with diversified income or the activity units grow in number. Limited opportunities to intensify agricultural production in small farmer’s farms caused the fact that activities or income were diversified. The model of family farm remains; however, the relation between activity and the usage of family’s labour in farm activity changes.

scholarly journals Evolution and Forecasting of the Renewable Energy Consumption in the Frame of Sustainable Development: EU vs. Romania

2021 ◽  
Vol 13 (18) ◽  
pp. 10327
Author(s):  
Anca Mehedintu ◽  
Georgeta Soava ◽  
Mihaela Sterpu ◽  
Eugenia Grecu
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Renewable Energy Sources ◽  
The European Union ◽  
Renewable Energy Consumption ◽  
Final Energy ◽  
Heating And Cooling ◽  
Final Energy Consumption ◽  
The Eu

This article is part of the concerns generated by the need to increase the consumption of renewable energy, so that in the European Union (EU) countries, its share in the final energy consumption, to reach 32% by 2030, increases. In the context in which, in the specialized literature, the analysis of renewable energy consumption by activity sectors is approached very little, such an analysis has high utility. The variables of interest are the share of renewable energy in the final energy consumption, and the share of renewable energy sources in the final energy consumption in transport, electricity, and heating and cooling. The study performs a comparative analysis of the evolution of these indicators for the period 2004–2019 for Romania and the EU, an empirical estimate of the evolution of indicators using time regression and autoregressive models, a forecast of the share of renewable energy consumption in the final energy consumption and by the main sectors (transport, electricity, and heating and cooling) for the 2030 horizon, providing appropriate scenarios for achieving the EU established goals, as well as an analysis of the interdependence between the indicators. Through the results obtained, the paper can contribute to improving the framework for the sustainable development of energy consumption.

scholarly journals Electricity Generation from Renewable Energy Sources in Poland as a Part of Commitment to the Polish and EU Energy Policy

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4261
Author(s):  
Józef Paska ◽  
Tomasz Surma ◽  
Paweł Terlikowski ◽  
Krzysztof Zagrajek
Keyword(s):  
Renewable Energy ◽  
Energy Policy ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Levelized Cost Of Electricity ◽  
Eu Member States ◽  
Current State ◽  
Eu Energy Policy ◽  
Final Energy Consumption ◽  
The Eu

The aim of this paper is to present the state of development of renewable energy sources (RES) in Poland in accordance with the obligations of European Union energy policy. The EU Member States are obliged to adopt different support mechanisms for the development of renewable energy sources, and in consequence to achieve their Directive’s targets. Poland, being a Member State of the EU since 2004, has accepted a target of a 15% share of energy generated from renewable energy sources in final energy consumption, including 19.3% from renewable electricity until 2020. Due to the difficulties with target achievement, the authors found it reasonable to analyze the challenge of RES development in Poland. The article presents energy policy in the EU, as well as the review of measures implemented for renewable energy development. The current state of and perspectives on using renewable energy sources in Poland and in the EU are also depicted. In the article, the authors analyze the relation between reference prices at dedicated RES auctions in Poland and the levelized cost of electricity (LCOE). The paper also provides a description of the renewable energy sources’ development in three areas: electricity, heat and transport biofuels. Its main content, though, refers to the generation of electricity from renewable energy sources.

scholarly journals Prospects for development of Ukraine and EU in the field of renewable energy sources

2019 ◽  
Vol 61 ◽  
pp. 01008 ◽  
Author(s):  
Mykola Khomenko ◽  
Kateryna Pryakhina ◽  
Kostyantyn Latyshev
Keyword(s):  
European Union ◽  
Renewable Energy ◽  
Policy Development ◽  
Alternative Energy ◽  
Action Plan ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
The European Union ◽  
Small Hydropower ◽  
The Eu

In article assessment of tendencies and prospects of cooperation between Ukraine and the European Union in the field of renewable energy sources was carried out. Over the past decades, the theme of climate change, especially caused by human activity, has become one of the most acute and most exploited in scientific disputes. Today, the problem of finding new sources of energy is more than acute, with a special place occupy non-traditional ones. The reduction of Ukraine's energy dependence on traditional fuel resources is possible only through the development and use own alternative energy, which uses local resources – bioenergy as a fuel or does not require a fuel component at all – solar, wind and small hydropower. The European Union is one of the leaders in the implementation of alternative energy and renewable energy sources and initiates the creation of many organizations that finance alternative energy projects. Ukraine should ensure the effective convergence of its own legislation with the European Union, since it defined the European integration vector as a priority area of foreign policy development. At the same time, within the framework of the Union, the mechanism of environmental protection and progressive approaches to the implementation of energy policy, including in the field of renewable energy, can serve as the most constructive benchmarks for Ukraine's development in this area. Ukraine signed the Paris Agreement, and undertook certain commitments, namely: in accordance with the National Action Plan on alternative energy up to 2020, the objective was to reach 11% of RES in gross final energy consumption. Achieving this goal is possible only in the case of international cooperation with the EU in the field of alternative energy. However, today, the study of the prospects of cooperation between Ukraine and the EU in this field is not developing sufficiently and there is a certain vacuum in solving strategic problems in this context, which determines the relevance of the topic.

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