scholarly journals Contribution of natural gas for sustainable development in Portugal

2010 ◽  
Vol 2 (1) ◽  
Author(s):  
Manuela Sarmento ◽  
Diamantino Durão
Keyword(s):  
Natural Gas ◽  
Environmental Sustainability ◽  
Energy Production ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Needs ◽  
New Business ◽  
Gas Market ◽  
Gas Supply

Portugal has strongly limited domestic energy resources, since imports almost 90% of its energy needs and its energy production is totally from renewable energy sources. The addition of natural gas to the Portuguese energy mix in 1997 helped to diversify Portugal’s energy sources and is a contribution to the mitigation of environmental problems. In 1997 also ceased the production and use of domestic coal. In fact, Portugal is working to reduce the growth in energy use and CO2 emissions, in order to follow the Kyoto Protocol. This measure can be linked to environmental sustainability policies, creating the opportunity for new business to appear. Natural gas, in some applications, can substitute the electricity, implying a decrease in price. Security of gas supply is an important issue, since Portugal depends mainly on a single supplier. This paper aims at analysing the emerging gas market, (threats and opportunities), its evolution andcomparison with other OECD countries.

scholarly journals Renewable energy development in Hungary

2012 ◽  
pp. 73-77
Author(s):  
Orsolya Nagy
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
Energy Use ◽  
Renewable Energy Sources ◽  
Electricity Production ◽  
Energy Sources ◽  
The European Union ◽  
Fuel Prices ◽  
The Earth ◽  
Renewable Energy Development

Due to the exhaustion of the fossile fuel reserves of the Earth, the increase of fossile fuel prices and the difficulties concerning stable fuel supply, the increase of electricity production from renewable energy sources has a special strategic importance. In this study, I am going to evaluate the circumstances of the production and use of renewable energy sources in Hungary and in the European Union. I present the Hungarian economic, energy policy-related and social circumstances which make it necessary to support renewable energy production. I am going to give an overview on the related EU strategies concerning the sector and the Hungarian development plan in this field. I pay particular attention to the examination of development opportunities and the R&D activities going on in this area in Hungary, as well as the efficiency of the means used to improve renewable energy use.

scholarly journals Comparative Theoretical Analysis of Biomass and Energy Potentials of Usable Maize and Wheat Stalk Wastes: Example of Sakarya Province

2020 ◽  
Vol 8 (11) ◽  
pp. 2460-2467
Author(s):  
Muhammed Taşova ◽  
İsmail Naneli
Keyword(s):  
Energy Production ◽  
Dry Matter ◽  
Energy Requirement ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Gas Oil ◽  
Energy Potential ◽  
Statistical Institute ◽  
Energy Needs ◽  
Wheat Product

With the increase in the population in the world and in our country, the energy requirement related to consumer demands is constantly increasing. In our country, although wind, sun, etc. energy sources are used in energy production, fuels of fossil origin (coal, natural gas, oil etc.) are used more in energy production. Renewable energy sources, which are alternative due to the decrease in fossil fuel reserves, negative environmental effects and inability to meet the energy needs in the future, come to the fore. In this study, Turkey Statistical Institute (TUIK) according to the 2015-2019 year data, Sakarya at the central and districts in cultivation areas for cultivated of using the amounts of maize and wheat product (da) average waste, dry matter, and volatile dry matter, methane and energy their potential has been determined. As a result of the calculations, it has been determined that the maize sap waste amount has the highest 25695.68 tons of waste and 201197.15 MJ energy potential in Adapazarı district in 2017. Among the wheat stalk wastes, in 2017, Geyve district had the highest 269.95 tons of waste and 2113.72 MJ energy respectively.

scholarly journals Energy Optimization and Management in a Building Using Clean Energy

2021 ◽  
Vol 16 ◽  
pp. 61-66
Author(s):  
Hajji Abdelghani ◽  
Lahlou Yahya ◽  
Abbou Ahmed
Keyword(s):  
Energy Management ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Operating Time ◽  
Clean Energy ◽  
Production Equipment ◽  
Energy Sources ◽  
Management Algorithm ◽  
Energy Needs ◽  
Production And Consumption

To lower the production of greenhouse gases while covering energy needs, it is necessary to exploit renewable energies in the urban environment and manage energy production and consumption as well. In this work, we interested in the study of a house using renewable energy sources such as photovoltaic (PV) panels, thermal panels and wind turbines (WT). The energy consumption happens through electrical charges like the refrigerator, the heat pump, the lighting... The main objective of this work is to change the operating time of secondary loads and to propose an energy management algorithm. Firstly, we will model the consumption of electrical charges and move the operation of secondary charges to moderate the consumed energy. Finally, we suggested an algorithm to manage and optimize energy production and consumption. The results show that the displacement of secondary loads reduces over 8.5% of the energy bill and the suggested algorithm optimizes the operation of the energy production equipment while covering the energy needs of the inhabitants.

scholarly journals New trends in the international political dynamics of natural gas trade

2018 ◽  
Vol 70 (3) ◽  
pp. 305-336 ◽  
Author(s):  
Petar Stanojevic ◽  
Gordana Misev
Keyword(s):  
Renewable Energy ◽  
Natural Gas ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Growth Trend ◽  
Continuous Growth ◽  
Security Issues ◽  
The Future ◽  
Gas Market ◽  
Energy Products

The paper analyses the global natural gas market in the context of the identification of influential international factors or phenomena that will determine trends in the next foreseeable period. Natural gas is an energy source that, in addition to renewable energy sources, shows a high and continuous growth trend. Almost all countries possess certain means to produce electricity (including renewable energy sources) or obtain it from the immediate environment, while gas and oil are energy products that all countries use but do not have. Trends related to these two energy sources and the factors that influence the creation of their market are numerous and complex. The authors present some important aspects and approaches to energy security issues related to global energy challenges, as well as the risks and threats that the world is exposed to today and in the future. The authors conclude that natural gas as the energy of the future is recording increasing consumption, which requires a profound analysis of trends in this area.

scholarly journals Potentials and prospects for implementation of renewable energy sources in Serbia

2019 ◽  
Vol 23 (5 Part B) ◽  
pp. 2895-2907 ◽  
Author(s):  
Njegos Dragovic ◽  
Milovan Vukovic ◽  
Dejan Riznic
Keyword(s):  
Renewable Energy ◽  
Natural Gas ◽  
Crude Oil ◽  
Geothermal Energy ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Current Status ◽  
Energy Sources ◽  
Hydro Power ◽  
Oil And Natural Gas

Serbia is dependent on imports of crude-oil and natural gas, but is endowed by reserves of lignite and the potential of renewable energy sources. Serbia has a strategy to reduce greenhouse gas emissions in the energy sector and to increase the share of renewable in gross final energy production 27% by 2020. Serbia?s total estimated technically usable potential of renewable energy sources is 5.65 Mtoe per year. Biomass has the highest potential for use in Serbia (3.448 Mtoe), followed by hydro power (1.679 Mtoe), solar energy (0.240 Mtoe), geothermal energy (0.180 Mtoe), and wind energy (0.103 Mtoe). This paper presents the potential of renewable energy sources available in Serbia, with current status of their use and prospects for further exploitation.

scholarly journals The Role of Agriculture and Rural Areas in the Development of Autonomous Energy Regions in Poland

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 4033
Author(s):  
Grzegorz Ślusarz ◽  
Barbara Gołębiewska ◽  
Marek Cierpiał-Wolan ◽  
Dariusz Twaróg ◽  
Jarosław Gołębiewski ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Rural Areas ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Local Level ◽  
Arable Land ◽  
Energy Sources ◽  
Additional Energy ◽  
Energy Needs ◽  
Energy Independence

In many countries, energy security is treated as a priority for the coming decades, and at the same time energy production from the vast majority conventional energy sources does not meet environmental protection criteria. Hence, the need to use renewable energy sources (RES), which can largely satisfy energy needs. The aim of the study was to identify possibilities of creating autonomous energy regions (ARE) in Poland, based on renewable energy sources. Attention was paid to the role and significance of the potential of rural areas in this respect, taking into account the possibilities of increasing energy production from these sources in individual regions of Poland. The research was conducted on a regional level (division into voivodships) and on a local level (division into powiats, which form voivodships). When assessing the potential for constructing ARE based on RES, the following energy sources were taken into account: water, wind, sun, biogas and biomass. It was found that the highest RES potential versus energy consumption can be obtained in powiats where the share of arable land and forests exceeds 80%. The research showed that in most regions of Poland (powiats, voivodships), there is a large potential for obtaining additional energy from RES, which would cover over 73% of the country’s demand for electricity. This could be the basis for building energy independence on a local scale. The results of the study indicated that as many as seven regions would become self-sufficient in terms of electricity demand.

scholarly journals Fossil fuels markets in the “energy transition” era

2020 ◽  
Vol 6 (4) ◽  
pp. 424-436
Author(s):  
Vyatcheslav A. Kulagin ◽  
Dmitry A. Grushevenko ◽  
Nikita O. Kapustin
Keyword(s):  
Natural Gas ◽  
Fossil Fuels ◽  
Energy Use ◽  
New Technologies ◽  
Renewable Energy Sources ◽  
Energy Transition ◽  
Transport Sector ◽  
Energy Sources ◽  
Socioeconomic Changes ◽  
Long Term Impact

The global energy sector is undergoing a global transformation under the influence of technological breakthroughs in several sectors of production and consumption, as well as profound socioeconomic changes in approaches to energy use. This process became known as “energy transition.” In this paper, the authors investigate the long-term impact of the energy transition and related processes on the markets of key fossil fuels: oil, natural gas, and coal. Research shows that all fossil fuel sectors will face a significant increase in competition, both within traditional markets and from other energy sources, due to the development of inter-fuel competition. At the same time, energy policies and efforts to combat greenhouse gas emissions will mostly determine the energy balances of the largest countries, and will have an even greater impact on the market. Natural gas, as the most environmentally friendly of fossil fuels, with a large potential to supplement the generation of new renewable energy sources (NRES), will be the least impaired by the energy transition. In the next 20 years, its consumption and production are expected to grow significantly. Oil is under serious pressure from environmental legislation and growing inter-fuel competition in the transport sector. It is highly likely that consumption will peak before 2040, yet the depletion of traditional resources is supporting prices. The coal market is set for an almost inevitable reduction in consumption. New technologies for capturing emissions can only partially mitigate the rate of coal use decline.

scholarly journals The Energy System of an Ecovillage: Barriers and Enablers

Land ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 682
Author(s):  
Zita Szabó ◽  
Viola Prohászka ◽  
Ágnes Sallay
Keyword(s):  
Renewable Energy ◽  
Spatial Structure ◽  
Energy Management ◽  
Energy Production ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Energy Sources ◽  
Energy Management System ◽  
Production And Consumption ◽  
Ecologically Sustainable

Nowadays, in the context of climate change, efficient energy management and increasing the share of renewable energy sources in the energy mix are helping to reduce greenhouse gases. In this research, we present the energy system and its management and the possibilities of its development through the example of an ecovillage. The basic goal of such a community is to be economically, socially, and ecologically sustainable, so the study of energy system of an ecovillage is especially justified. As the goal of this community is sustainability, potential technological and efficiency barriers to the use of renewable energy sources will also become visible. Our sample area is Visnyeszéplak ecovillage, where we examined the energy production and consumption habits and possibilities of the community with the help of interviews, literature, and map databases. By examining the spatial structure of the settlement, we examined the spatial structure of energy management. We formulated development proposals that can make the community’s energy management system more efficient.

Power Cycles of Generation III and III+ Nuclear Power Plants

2014 ◽  
Author(s):  
Alexey Dragunov ◽  
Eugene Saltanov ◽  
Igor Pioro ◽  
Pavel Kirillov ◽  
Romney Duffey
Keyword(s):  
Renewable Energy ◽  
Natural Gas ◽  
Thermal Efficiency ◽  
Nuclear Power ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Electrical Energy ◽  
Energy Sources ◽  
Thermal Power Plants

It is well known that the electrical-power generation is the key factor for advances in any other industries, agriculture and level of living. In general, electrical energy can be generated by: 1) non-renewable-energy sources such as coal, natural gas, oil, and nuclear; and 2) renewable-energy sources such as hydro, wind, solar, biomass, geothermal and marine. However, the main sources for electrical-energy generation are: 1) thermal - primary coal and secondary natural gas; 2) “large” hydro and 3) nuclear. The rest of the energy sources might have visible impact just in some countries. Modern advanced thermal power plants have reached very high thermal efficiencies (55–62%). In spite of that they are still the largest emitters of carbon dioxide into atmosphere. Due to that, reliable non-fossil-fuel energy generation, such as nuclear power, becomes more and more attractive. However, current Nuclear Power Plants (NPPs) are way behind by thermal efficiency (30–42%) compared to that of advanced thermal power plants. Therefore, it is important to consider various ways to enhance thermal efficiency of NPPs. The paper presents comparison of thermodynamic cycles and layouts of modern NPPs and discusses ways to improve their thermal efficiencies.

scholarly journals Advances in Underground Energy Storage for Renewable Energy Sources

2021 ◽  
Vol 11 (11) ◽  
pp. 5142
Author(s):  
Javier Menéndez ◽  
Jorge Loredo
Keyword(s):  
European Union ◽  
Renewable Energy ◽  
Energy Storage ◽  
Natural Gas ◽  
Greenhouse Gas ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
The European Union ◽  
Coal Fuel

The use of fossil fuels (coal, fuel, and natural gas) to generate electricity has been reduced in the European Union during the last few years, involving a significant decrease in greenhouse gas emissions [...]

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