نتایج جستجو برای: hydroelectric energy
تعداد نتایج: 667630 فیلتر نتایج به سال:
Hydropower in boreal conditions is generally considered the energy source emitting the least greenhouse gas per kilowatt-hour during its life cycle. The purpose of this study was to assess the relative contribution of the land-use change on the modification of the carbon sinks and sources following the flooding of upland forested territories to create the Eastmain-1 hydroelectric reservoir in Q...
Handling uncertainty in natural inflow is an important part of a hydroelectric scheduling model. In a stochastic programming formulation, natural inflow may be modeled as a random vector with known distribution, but the size of the resulting mathematical program can be formidable. Decomposition-based algorithms take advantage of special structure and provide an attractive approach to such probl...
This paper presents the impact of the data quality from hydroelectric plants in the analysis of their past operation. A middle term simulation tool has been applied to Brazilian hydroelectric plants which are under the coordination of the Electric System National Operator (ONS). In order to analyze the impact of the data quality this simulator is used to reproduce the past operation of the plan...
The implementation of major equipment within an existing electrical system necessitates a thorough comprehension of environmental policies, integrated planning, and organizational interaction in the sphere of the endeavor. In a hydroelectric energy system integration methodology, there are various optional processes and detailed analysis encountered throughout the execution. The selection of a ...
The high penetration of renewable energy resources has made it harder to secure a flexible power system. Accordingly, this has become an issue in operating power systems. As a possible solution, pumped hydroelectric energy storage (PHES) has received much attention because of its fast start-up and ramp characteristics. This study proposes a flexibility-based reserve scheduling method for PHES. ...
Climate change, pollution, and energy insecurity are among the greatest problems of our time. Addressing them requires major changes in our energy infrastructure. Here, we analyze the feasibility of providing worldwide energy for all purposes (electric power, transportation, heating/cooling, etc.) from wind, water, and sunlight (WWS). In Part I, we discuss WWS energy system characteristics, cur...
هدف از انجام این پروژه شبیه سازی جریان داخل پمپ دنده ای نوع چرخدنده خارجی می باشد. پمپهای دنده ای یکی از مهمترین و پرکاربردترین ابزارهای تولید توان هیدرولیکی، جابجایی سیالات و مواد توده ای سیالات بسیار لزج و ... در صنایع عمومی، شیمیایی، غذایی و ... بوده و قادر به تولید فشارهای بسیار بالا و دبی منظم و دقیق می باشند. از آنجا که اصول کارکرد و نگهداری و تعمیرات این پمپها در مقایسه با سایر انواع دیگ...
Small hydroelectric power generation is attractive from both an environmental and economic point of view. Technological innovations mitigation measures are making small plants inexpensive viable source renewable energy which can be generated independently. They contribute not only to protection, but also reduce human dependence on fossil fuels. This study dedicated finding solutions based techn...
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