Hydropower


Book Description

Hydropower provides a complete discussion of the most up-to-date considerations of this method of creating renewable energy. After introducing the method's history, the author explores various considerations for engineers, planners and managers who need to determine the best placement and size of a plant. The book then presents various types of hydropower systems, such as Run-of-River Schemes and various types of Dam and Turbines, also considering the important economic, environmental and geological impacts of each. Those involved in the planning, design and management of hydropower systems, such as engineers, researchers, managers and policymakers will find this book a very valuable and insightful resource. - Explores different types of dams and turbines set alongside easy-to-understand diagrams, such as Embankment Dams, Concrete Arch Dams, Reaction Turbines and Francis Turbines - Considers various economic and environmental factors significant for this type of project, such as resettlement, biodiversity and greenhouse gases - Discusses best practices for locating a hydropower site and how to make important decisions regarding placement and method




Silting Problems in Hydropower Plants


Book Description

The 26 papers in this volume cover: catchment treatment and reservoir sediment ation; de-silting and silt disposal; modelling techniques; hydraulic design considerations; and mechanical design and material technology.




Dams and Development in China


Book Description

China is home to half of the world's large dams and adds dozens more each year. The benefits are considerable: dams deliver hydropower, provide reliable irrigation water, protect people and farmland against flooding, and produce hydroelectricity in a nation with a seeimingly insatiable appetite for energy. As hydropower responds to a larger share of energy demand, dams may also help to reduce the consumption of fossil fuels, welcome news in a country where air and water pollution have become dire and greenhouse gas emissions are the highest in the world. Yet the advantages of dams come at a high cost for river ecosystems and for the social and economic well-being of local people, who face displacement and farmland loss. This book examines the array of water-management decisions faced by Chinese leaders and their consequences for local communities. Focusing on the southwestern province of Yunnan—a major hub for hydropower development in China—which encompasses one of the world's most biodiverse temperate ecosystems and one of China's most ethnically and culturally rich regions, Bryan Tilt takes the reader from the halls of decision-making power in Beijing to Yunnan's rural villages. In the process, he examines the contrasting values of government agencies, hydropower corporations, NGOs, and local communities and explores how these values are linked to longstanding cultural norms about what is right, proper, and just. He also considers the various strategies these groups use to influence water-resource policy, including advocacy, petitioning, and public protest. Drawing on a decade of research, he offers his insights on whether the world's most populous nation will adopt greater transparency, increased scientific collaboration, and broader public participation as it continues to grow economically.




Contested Knowledges


Book Description

Water acquisition, storage, allocation and distribution are intensely contested in our society, whether, for instance, such issues pertain to a conflict between upstream and downstream farmers located on a small stream or to a large dam located on the border of two nations. Water conflicts are mostly studied as disputes around access to water resources or the formulation of water laws and governance rules. However, explicitly or not, water conflicts nearly always also involve disputes among different philosophical views. The contributions to this edited volume have looked at the politics of contested knowledge as manifested in the conceptualisation, design, development, implementation and governance of large dams and mega-hydraulic infrastructure projects in various parts of the world. The special issue has explored the following core questions: Which philosophies and claims on mega-hydraulic projects are encountered, and how are they shaped, validated, negotiated and contested in concrete contexts? Whose knowledge counts and whose knowledge is downplayed in water development conflict situations, and how have different epistemic communities and cultural-political identities shaped practices of design, planning and construction of dams and mega-hydraulic projects? The contributions have also scrutinised how these epistemic communities interactively shape norms, rules, beliefs and values about water problems and solutions, including notions of justice, citizenship and progress that are subsequently to become embedded in material artefacts.




Dams for Hydroelectric Energy Barrages pour l’Énergie Hydroélectrique


Book Description

The Bulletin is intended as a general document aimed at a wide technical audience involved with or affected by hydropower. Basic background data and some statistics are presented, with specific reference to hydro-electricity production, hydropower dams, hydropower plants, in operation or under construction. Key aspects of hydropower are discussed. Data are presented about typical capital and both internal and external operating costs. Environmental and social impacts are discussed and reference is made to the impact reservoirs have on greenhouse gas emissions. A section is dedicated to the exploitation of tidal energy by means of barrage systems. The current extent of hydropower development and the influence of policies aimed to favour the development of renewable energies are also discussed. Reference sources of information, on hydropower in general and interesting case-histories, are provided. Le Bulletin se veut un document général destiné à un large public technique impliqué ou affecté par l'hydroélectricité. Des données de base et quelques statistiques sont présentées, avec une référence spécifique à la production hydroélectrique, aux barrages hydroélectriques, aux centrales hydroélectriques, en fonctionnement ou en construction. Les principaux aspects de l'hydroélectricité sont discutés. Les données sont présentées sur le capital type et les coûts de fonctionnement internes et externes. Les impacts environnementaux et sociaux sont discutés et il est fait référence à l'impact des réservoirs sur les émissions de gaz à effet de serre. Une section est dédiée à l'exploitation de l'énergie marémotrice au moyen de systèmes de barrage. L'ampleur actuelle du développement hydroélectrique et l'influence des politiques visant à favoriser le développement des énergies renouvelables sont également abordées. Des sources d'information de référence, sur l'hydroélectricité en général et des études de cas intéressantes, sont fournies.




Impacts of Large Dams: A Global Assessment


Book Description

One of the most controversial issues of the water sector in recent years has been the impacts of large dams. Proponents have claimed that such structures are essential to meet the increasing water demands of the world and that their overall societal benefits far outweight the costs. In contrast, the opponents claim that social and environmental costs of large dams far exceed their benefits, and that the era of construction of large dams is over. A major reason as to why there is no consensus on the overall benefits of large dams is because objective, authoritative and comprehensive evaluations of their impacts, especially ten or more years after their construction, are conspicuous by their absence. This book debates impartially, comprehensively and objectively, the positive and negative impacts of large dams based on facts, figures and authoritative analyses. These in-depth case studies are expected to promote a healthy and balanced debate on the needs, impacts and relevance of large dams, with case studies from Africa, Asia, Australia, Europe and Latin America.




Hydraulics of Stepped Spillways


Book Description

This book provides a discussion of the latest research pertaining to the hydraulic design of spilways and to hydraulic engineering in general. It comprises the papers of a workshop organized to bring together engineers and scientists from around the world for the exchange of ideas on water flow over stepped spillways. This workshop covered a range of subjects from two-phase flow characteristics to refurbishment and implementation of spillways in existing dam structures, and the book also includes a number of illustrative case studies. Overall, this book is one of the first in the rapidly growing field of modern hydraulic engineering techniques. It will interest designers, scientists, and graduate students and researchers in the fields of hydraulic, civil and environmental engineering.




Renewables for Energy Access and Sustainable Development in East Africa


Book Description

This short open access book investigates the role of renewable energy in East Africa to provide policy-relevant inputs for the achievement of a cost-effective electrification process in the region. For each country, the authors review the current situation in the domestic power sector, adopt a GIS-based approach to plot renewable energy resources potential, and review currently planned projects and projects under development, as well as the key domestic renewables regulations. Based on such information, least-cost 100% electrification scenarios by 2030 are then modelled and comparative results over the required capacity additions and investment are reported and discussed. The authors also inquire into some of the key technological, economic, policy, cooperation, and financing challenges to the development of a portfolio of renewables to promote energy access in a sustainable way, including a discussion of the challenges and opportunities that might stem from the interaction between local RE potential and natural gas resources currently under development in the region. To conclude, policy recommendations based on the book’s results and targeted at international cooperation and development institutions, local policymakers, and private stakeholders in the region are elaborated.