7 results
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2. Global Energy Crisis: Impact on The Global Economy.
- Author
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OZILI, Peterson K. and OZEN, Ercan
- Subjects
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ENERGY consumption , *RENEWABLE energy transition (Government policy) , *RENEWABLE energy sources , *POWER resources , *FOSSIL fuels , *ENERGY shortages - Abstract
This paper presents an overview of the 2021 global energy crisis. It has been shown that a combination of post-COVID recovery, depleted fossil fuel energy reserves and extreme weather conditions led to a surge in global demand for energy. Fossil fuel energy reserves were depleted and were not sufficiently replenished due to the need to transition from fossil fuel energy to renewables. Failure to replenish fossil fuel energy reserves led to unavoidable energy shortages. Energy demand rose to unprecedented levels and the shortage could not be filled by renewables, thereby triggering the energy crisis or energy supply crunch. The energy crisis or energy crunch witnessed in the UK and some parts of Asia and Europe showed how the energy transition can have ripple effects across every corner of society. The energy crisis demonstrates, in part, that renewable energy is not yet fully developed, and is not ready to meet the ever-growing global demand for energy by households and corporates. There is need to consider calls to slowdown the energy transition until the renewable energy sector is fully developed and ready to meet the ever-growing global demand for energy. Slowing down the transition to renewables is a step in the right direction in light of recent events. [ABSTRACT FROM AUTHOR]
- Published
- 2021
3. Innovative methodologies in renewable energy: A review.
- Author
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Şen, Zekâi
- Subjects
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RENEWABLE energy sources , *ENERGY consumption , *POWER resources , *CLIMATE change , *KNOWLEDGE gap theory , *GLOBAL warming , *CLIMATE change prevention - Abstract
Summary: This paper is concerned with innovative approaches to renewable energy sources computation methodologies, which provide more refined results than the classical alternatives. Such refinements provide additional improvements especially for replacement of fossil energy usages that emit greenhouse gas (GHG) into the atmosphere leading to climate change impact. Current knowledge gap among each renewable energy source calculation is rather missing fundamentals of plausible, rational, and logical explanations for the interpretation of results. In the literature, there are rather complicated and mechanically applicable methodologies, which require input and output measurement data match with missing physical explanations. The view taken in this review paper is to concentrate on quite plausible, logical, rational, and effectively applicable innovative energy calculation methodologies with simplistic fundamentals. For this purpose, a set of renewable energy methodological approaches is revisited with their innovative structures concerning solar, wind, hydro, current, and geothermal energy resources. With the increase in the renewable energy utilizations to combat the undesirable impacts of global warming and climate change, there is a need for better models that will include physical environmental conditions and data properties in the probabilistic, statistical, stochastic, logical, and rational senses leading to refined and more reliable estimations with application examples in the text. Finally, new research directions are also recommended for more refined innovative energy system calculations. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
4. Sustainable development of energy, water and environment systems 2016.
- Author
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Pukšec, Tomislav, Leahy, Paul, Foley, Aoife, Markovska, Natasa, and Duić, Neven
- Subjects
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RENEWABLE energy sources , *NATURAL resources , *ENERGY development , *POWER resources , *ENVIRONMENTAL policy - Abstract
This paper presents the editorial for the Renewable and Sustainable Energy Reviews joint special issue devoted to the research work discussed and presented at the 11th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES), held from the 4th September to the 9th September 2016 in Lisbon, Portugal and the 2nd South East European (SEE) SDEWES Conference held from June 15th to June 18th, 2016 in Piran, Slovenia. This special issue is in line with the journal's aim of publishing research from across the ever-broadening field of renewable and sustainable energy with a strong review element. Previous SDEWES conference special issues have gathered a significant knowledge base in the field of sustainable development that reflects the continuous research efforts of the SDEWES research community. Therefore, this editorial provides not only an overview of the papers published in this particular special issue, but also a wider overview of the current trends in the domain of sustainable and renewable energy. This year's special issue focuses particularly on the benefits of the bio-based economy, energy security issues, fossil fuel thermal plant alternatives and environmental constraints, district heating and cooling together with cross sector energy efficiency and energy conservation issues. Sustainable transport systems, the issue of fuel poverty in urban neighbourhoods and renewable energy to support development of peripheral rural areas, optimising passive building design for hot climates and solar-powered heating and cooling are further topics featured in this special issue. In the process of selecting papers for this special issue, the guest editors invited in total 23 extended manuscripts for consideration for publication. After a rigorous review process by expert reviewers overseen by the guest editors a total of 16 articles were accepted for publication. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
5. Energy flexibility of manufacturing systems for variable renewable energy supply integration: Real-time control method and simulation.
- Author
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Beier, Jan, Thiede, Sebastian, and Herrmann, Christoph
- Subjects
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FLEXIBLE manufacturing systems , *RENEWABLE energy sources , *POWER resources , *REAL-time control , *CLIMATE change , *ELECTRIC power production - Abstract
A central strategy for climate change mitigation is expanding electricity generation from renewable energy sources, with an increasing share of decentralized generation. Some of these sources are variable renewable energy (VRE) sources, such as wind and solar resources. Measures have to be enacted to integrate VRE into an existing power supply system. One approach is switching from grid electricity supply towards direct demand of VRE generation to reduce grid transportation requirements and variable electricity grid feed-in. Within this context, energy flexibility control of manufacturing systems can be used to match energy demand of manufacturing systems with on-site VRE generation. Nonetheless, due to their inherent dynamic behavior, interlinked manufacturing systems provide additional operational and technical challenges such as maintaining throughput when energy control actions are executed. Further, stochastic influences from, for example, VRE generation and manufacturing system behavior constitute the requirement for a real-time approach on the level of manufacturing execution systems. Consequently, this paper presents a method for real-time control of manufacturing systems with several processes and intermediate buffers to increase utilization of (on-site) generated VRE without compromising system throughput. An initial method for an energy flexibility control logic is presented and a simulation prototype to evaluate its effectiveness is implemented. A case study is used to demonstrate the effectiveness and to test sensitivities to system parameter changes. Impact on direct VRE demand and additional operational indicators is evaluated. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
6. Solid state bio methane production from vegetable wastes Current state and perception.
- Author
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Jaiganesh, V., Nagarajan, P.K., and Geetha, A.
- Subjects
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FARM manure in methane production , *CLIMATE change , *ENERGY shortages , *SOLID state chemistry , *POWER resources , *RENEWABLE energy sources , *METHANATION - Abstract
The energy crisis and climate change are being the global challenge for the present debate since the world is in need of a green, efficient, carbon-neutral energy source to replace fossil fuels. Bio- gas, produced by biomethanation from organic materials, contributes to durable, reliable and renewable energy. Production of bio methane from vegetable wastes provides a flexible carrier for renewable energy; methane can be used as a substitute fuel for both heat and power production. In this context, the Indian Government invited the support of the private sectors as before, for the development and utilization of Eco-friendly new and renewable sources of energy to cover the demand. The paper also reviews the current state of vegetables purposes for bio methane production, including their preparation methods and performance. The vegetable wastes for bio methane production are presented and their main advantages described in comparison with the other available method of mixture of vegetable wastes for methane production. The waste generated may cause health hazards, so, setting up a waste treatment plant based on biomethanation process is the solution to use the technology to generate electricity. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
7. Impact of Climate Change on Wave Energy Resource in the Mediterranean Coast of Morocco.
- Author
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Sierra, Joan Pau, Castrillo, Ricard, Mestres, Marc, Mösso, César, Lionello, Piero, and Marzo, Luigi
- Subjects
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WAVE energy , *CLIMATE change , *POWER resources , *OCEAN wave power , *RENEWABLE energy sources , *OCEAN waves - Abstract
The increasing demand for energy and the impacts generated by CO2 emissions make it necessary to harness all possible renewable sources of energy, like wave power. Nevertheless, climate change may generate significant variations in the amount of wave energy available in a certain area. The aim of this paper is to study potential changes in the wave energy resource in the Mediterranean coast of Morocco due to climate change. To do this, wave datasets obtained by four institutes during the Coordinated Regional Climate Downscaling Experiment in the Mediterranean Region (Med-CORDEX) project are used. The future conditions correspond to the RCP4.5 and RCP8.5 scenarios from the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. The results show that projected future wave power is very similar to that of the present considering the whole area, although at some specific points there are slight changes that are more evident for the RCP8.5 scenario. Another remarkable result of this study is the significant increase of the temporal variability of wave power in future scenarios, in particular for RCP8.5. This will be detrimental for the deployment of wave energy converters in this area since their energy output will be more unevenly distributed over time, thus decreasing their efficiency. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
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