نتایج جستجو برای: hydroelectric energy
تعداد نتایج: 667630 فیلتر نتایج به سال:
tor several decades, electricity production and use have been a growing source of concern among individuals and groups monitoring the quality of the environment. Emissions from coalfired power plants, impacts of hydroelectric development, and risks associated with nuclear energy use have been particular targets for political action, dating to the early days of the environmental movement in the ...
In this study, we propose a risk analysis simulation model for economic evaluation of hydroelectric engineering project. This model takes annual energy outputs as risk elements. It submits to Pearson-III distribution similar with the annual runoff. Take data from three typical years to estimate the distribution parameters and then yearly benefits can be simulated in given period. By discounting...
Southwestern Amazonia is the frontier area between Brazil, Bolivia and Peru. In recent years this region has been faced with IIRSA (Integration Initiative of South American Infrastructure), the huge transnational program to promote integration by transportation and to a lesser degree, with energy, particularly hydroelectric. The center of this area consists of the Department of Madre de Dios, P...
In this study, the electricity production and energy costs of hydroelectric power plant is analyzed by using actual plants data. Using long term data, capacity utilization rates were estimated on an hourly basis. Economic analysis factors affecting (initial investment cost, operating-maintenance costs, etc.) researched assessed in detail. Additionally, for first time a dimensionless number was ...
This paper examines the effects of increased intermittency, caused by climate change, on strategic hydroelectric production when wind power is integrated with hydroelectricity. It is shown that increased uncertainty in water inflows caused by climate change raises hydroelectric output and increases the probability of overflow in future periods. The increased variability of wind speeds due to cl...
The Azad pumped storage power plant including the pumping and transformer cavern and surge tanks has been located in the Sanandaj-Sirjan formation with the alternation of slate and phyllite and meta sandstone.Due to the sensitivity and special use of these spaces, stability analysis and ensuring the safety of carven is very important.Nowadays, using the surface storage tanks is very costly; The...
Freshwater biofilms are currently being studied to determine their effect on the capacity of hydroelectric power scheme canals and the structure of their turbulent wall layers. Mean velocity boundary layer profiles and total drag measurements have been conducted in a purpose built recirculating water tunnel on freshwater biofilms grown in a hydroelectric canal. Two different fouled surfaces wer...
Balancing Environmental Protection and Energy Production in the Federal Hydropower Licensing Process
The U.S. Federal Energy Regulatory Commission (FERC) must balance environmental protection of riverine resources with the nation's growing demand for power production every time ii issues a hydroelectric license. This paper models the bureaucratic agency's decision-making process in issuing these licenses. Data on nearly 500 hydropower licenses issued from 1983 to 2005 are utilized. It is disco...
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