hydropower water Articles
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Long-term variations in the net inflow record for Lake Malawi
Lake Malawi is the third largest lake in Africa and plays an important role in water supply, hydropower generation, agriculture and fisheries in the region. Lake level observations started in the 1890s and anecdotal evidence of variations dates back to the early 1800s. A chronology of lake level and outflow variations is presented together with updated estimates for the net inflow to the ...
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Scales of justice in water governance: hydropower controversies in Switzerland
One significant challenge for the operationalization of water justice arises from the many dynamic scales involved. In this paper we explore the scalar dimension of justice in water governance through the insights derived from empirical research on hydropower production in the Swiss Alps and the application of the geographical concept of politics of scale. More specifically, we investigate how ...
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Energy recovery potential using micro hydropower in water supply networks in the UK and Ireland
The supply and treatment of water is a highly energy intensive process, resulting in large amounts of greenhouse gas emissions as well as incurring large economic costs. Both governments and water service providers worldwide recognise the need for more sustainable water supply systems. In recent years, the use of hydropower turbines within water supply networks has been shown as a viable option ...
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The blue water footprint of electricity from hydropower
Hydropower accounts for about 16% of the world’s electricity supply. It has been debated whether hydroelectric generation is merely an in-stream water user or whether it also consumes water. In this paper we provide scientific support for the argument that hydroelectric generation is in most cases a significant water consumer. The study assesses the blue water footprint of hydroelectricity ...
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An improved method for evaluating ecological suitability of hydropower development by considering water footprint and transportation connectivity in Tibet, China
Ecological suitability evaluation for hydropower development is effective in locating the most suitable area for construction and emphasizes a clear direction for water resources governance. In this paper, water footprints and transportation connectivity were introduced to improve the existing ecological suitability evaluation application for hydropower development by revising the defects of ...
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Hydropower: Why Use Thermal Insulation in Hydroelectric Plants?
Thermal insulation is a means of stopping heat transfer from one object to another. It is usually used to decrease levels of heat transfer via conduction, requiring objects to be in direct contact, and can also be used to prevent heat transfer via radiation. Thermal conductivity of materials determines the rate of heat transfer between objects. Ceramics and metals which have high thermal ...
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Hydropower ambitions of South Asian nations and China: Ganges and Brahmaputra Rivers basins
This paper analyses the current status of hydropower development in two major rivers basins in South Asia, the Ganges and the Brahmaputra. The total drainage area of the basins is about 1,660,000 km² shared by China, Nepal, India, Bhutan and Bangladesh. These two basins are blessed with ample water resources and huge hydropower potential. The abundant hydropower potential of these rivers basins ...
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Cumulative Watershed Impacts of Small-Scale Hydroelectric Projects in Irrigation Delivery Systems: A Case Study
The information and analysis in this case study provides basic background on small-scale hydropower projects located within irrigation water delivery systems; describes why the opportunity to develop these projects exists; identifies barriers to implementation; and discusses the environmental issues and concerns associated with these projects. Through examination of two existing small-scale ...
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Cumulative Environmental Impact Of Cascade Hydropower Dams Construction On The Water-River
Abstract Variation of environmental indices in cascade dams could be intensified in comparison with single dams. In cascade dams the intensification of long term negative impacts are more important than the impacts in single case dam. In addition, these impacts are more permanent and intense, so the precise study of cascade dams is indispensable. The main goal in this research is to study ...
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Developing reservoir operational decision rule by genetic programming
The reservoir operational decision rule is an equation that can balance reservoir system parameters in each period by considering previous experiences of the system. That equation includes variables such as inflow, volume storage and released water from the reservoir that are commonly related to each other by some constant coefficients in predefined linear and nonlinear patterns. Although ...
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Modeling future changes in the North-Estonian hydropower production by using SWAT
Climate change is altering temperature, precipitation, and other climatic parameters, affecting sectors dependent on water resources, e.g. energy production. The purpose of this study is to analyze the possible influences of climate change on hydropower potential in North Estonia. In Estonian run-of-river hydropower plants, energy comes mainly from water volume. Thus, changes in hydropower ...
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Optimizing multi-reservoir operation rules: an improved HBMO approach
We present an improved version of Honey Bees Mating Optimization (HBMO) algorithm to develop operating rules for multi-reservoir systems. The performance of the proposed model is tested through sensitivity analysis and comparing the result with those of a real-coded Genetic Algorithm (GA) for a 60-month period single-reservoir operation problem. The improved model is subsequently employed to ...
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Hyporheic water exchange in a large hydropower-regulated boreal river – directions and rates
Widespread river regulation is known to modify river-aquifer interactions, influencing entire watersheds, but knowledge of the hyporheic flowpath along regulated rivers is limited. This study measured the hydraulic conductivity of the river bed and the aquifer, water levels and seepage fluxes in the heavily regulated Lule River in Northern Sweden, with the aim of characterising water exchange ...
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How to make hydropower more environmentally friendly
Hydropower provides 85 percent of the world’s renewable electricity, but comes with a hefty environmental price tag. Here’s what some are doing to fix that. Humanity got its first large-scale electricity thanks to hydropower. On Aug. 26, 1895, water flowing over Niagara Falls was diverted to spin two generators, producing electricity to manufacture aluminum and carborundum. Since ...
By Ensia
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The Global Arc Towards Renewable Energy
Introduction Given the United States’ recent election results, America’s future on climate and energy policy is uncertain, but global progress on mitigating climate change will continue with or without us. We have reason to be optimistic because countries around the world have demonstrated their commitments to taking action on global warming. Already, 114 countries have ratified the ...
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Africa`s Hydropower Future
A gradual process of development has started yielding results for African hydropower, with a swathe of international hydro and associated power export projects under way or planned. It seems that Africa is becoming a more attractive place to invest in infrastructure development, but what has changed? It is well known that Africa has an abundance of hydropower resources, but it remains in ...
By HydroBox NV
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