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Energy Strategies (energy + strategy)

Distribution by Scientific Domains

Humanities and Social Sciences	40%

Selected Abstracts

Assessing the performances of some recently proposed density functionals for the description of bond dissociations involving organic radicals

INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, Issue 12 2010
Vincent Tognetti
Abstract In this article, we have assessed the performances of some recently proposed density functionals for the prediction of reaction energies involving radicals, notably bond dissociations of small organic molecules or of TEMPO-based ones, and ,-scissions, focusing on our TCA family and on range-separated hybrids. It is found that no functional belonging to these two families is able to compete with the M0x one. We have tried to improve the performances of the range-separated hybrids by the optimization of the attenuation parameter, but the improvements for one dataset lead to an unavoidable deterioration for the others. Furthermore, the differences between two different approaches to the long-range/short-range separation are discussed in terms of average enhancement factors, emphasizing the crucial choice of the approximate scheme used for the short-range part. Finally, the influence of the geometries has been considered and found to be negligible for this kind of molecular sets, validating the usual single point energies strategies developed in such benchmarking assessments. © 2010 Wiley Periodicals, Inc. Int J Quantum Chem, 2010 [source]

Assessment of the energy and exergy utilization efficiencies in the Turkish agricultural sector

INTERNATIONAL JOURNAL OF ENERGY RESEARCH, Issue 9 2006
Zafer Utlu
Abstract This study deals with evaluating the energy and exergy utilization efficiencies in the Turkish agricultural sector over a 12-year period from 1990 to 2001. In the energy and exergy analyses, two main energy sources, namely fuels and electricity, are taken into consideration, while the sectoral energy and exergy efficiencies are compared for this period. These main energy sources include diesel for tractors and other vehicles, and electricity for pumps. Overall energy utilization efficiencies are obtained to vary between 29.1 and 41.1%, while overall exergy utilization efficiencies are found to range from 27.9 to 37.4% in the analysed years, respectively. It may be concluded that the present technique proposed here may be used as a useful tool in analysing and evaluating the energy and exergy utilization efficiencies, identifying energy efficiency and/or energy conservation opportunities and dictating the energy strategies of countries. Copyright © 2005 John Wiley & Sons, Ltd. [source]

Sustaining economic expansion in Pakistan in an era of energy shortfalls: growth options to 20351

OPEC ENERGY REVIEW, Issue 2 2007
Robert Looney
Pakistan's recent economic acceleration together with rapid rates of population growth is having a significant impact on the country's energy supply/demand balances. Energy supplies in turn affect the pace and pattern of the country's economic expansion. Drawing on the empirically-based complex links between energy and the economy, several alternative scenarios of growth and energy needs are developed in an attempt to answer several key questions. In particular, what are some of the key interrelationships between sources of energy demand and supply? What are the economic growth consequences of alternative energy availabilities and, in turn, how do these growth patterns affect the subsequent energy supply and demand patterns? What energy strategies are suggested by the interconnection between the country growth requirements and energy needs? Are these significantly modified under rising or falling energy prices? Based on this analysis, several guidelines are drawn for the country's future energy policy. [source]

The evolving UK wind energy industry: critical policy and management aspects of the emerging research agenda

ENVIRONMENTAL POLICY AND GOVERNANCE, Issue 1 2006
Peter A. Strachan
Abstract In recent years, renewable energy , and in particular wind power , has come to the fore of both international and UK national environmental policy debates. In addition to helping to meet its Kyoto obligations, the British Government has indicated its desire for a much larger slice of the international wind energy market, and has consequently developed a national strategy to stimulate a more vibrant UK wind energy industry. With this in mind, the British Government's Climate Change Programme (DETR, 2000) and more recent Energy White Paper (DTI, 2003) outline the UK energy strategy for the coming two decades, with wind power featuring as a core component. This article critically considers the prospects for the development of a wind energy industry in the UK and introduces five strategic opportunities and five strategic barriers in this evolving segment of the energy market. The article concludes with recommendations to enhance public acceptance of wind energy and four important areas for future research are outlined. Copyright © 2006 John Wiley & Sons, Ltd and ERP Environment. [source]

Black gold to green gold: regional energy policy and the rehabilitation of coal in response to climate change

AREA, Issue 1 2009
Frances Drake
Energy production has come under increasing scrutiny as concerns about energy security and climate change have risen. In the UK changes in government structure and privatisation of the electricity industry have led to the emergence of multi-level governance. This means that decisions on how to reduce carbon dioxide emissions from the electricity-generating sector should no longer be solely a national policy decision. Previous studies have sought to explore how renewable energy may develop under multi-level governance, but this paper pays attention to a traditional fossil fuel source, coal, which is still an important means of electricity generation. Coal is the most abundant fossil fuel and advocates argue that carbon capture and storage techniques could make coal ,clean', paving the way for a long-term, secure and low emission way to produce energy. This study focuses on the Yorkshire and Humber Region, which has had a long association with coal mining and looks at the implications of this as the region seeks to develop a climate change action plan and an energy strategy within the new regional governance structures. The paper argues that the regional networks developed to address climate change are influenced by existing social power structures and alliances. The region as a territorial structure becomes a useful device in promoting national priorities. [source]