use as our source of energy.These include energy from water(Hydropower)‚ wind‚ the sun(solar power)‚ geothermal sources‚ and biomass fuel. In contrast‚ fuels such as coal‚ oil‚ and natural gas are non-renewable‚it’s finite and will some day run out completely. One of the most common renewable energy in the US is Hydropower. Hydroelectric power is generated from the force of moving or falling water. Most hydroelectric power comes from dammed water in lakes and reservoirs falling through turbines
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How important is it to explore alternative forms of energy? Energy is the source of life. Energy that we gain from food helps us to survive. It implies that food is a source of energy for us. The vehicles that we use‚ the industries that manufacture different products are all dependant on some kind of energy source. The source may be electricity or fossil fuel but it is clear that everything needs an energy source to run. In the old days firewood was the energy source. After the invention of automobiles
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(Altars 8). The majority of America’s oil is used to make gasoline for cars and other motor vehicles‚ it is also refined to generate electric power and diesel engines (Altars 6). If the United states were to extinguish the use of fossil fuels and switch over to renewable resources the nation would be using resources such as wind power‚ solar power‚ hydro-power‚ and even biomass. These resources are considered to be environmentally friendly and and more beneficial for american foreign policy‚ but there
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as well as wind. In the country of Germany the countryside depends on many different sources of energy in order to progress in their daily live especially for those individuals who work the farm lands or live in small villages of the windy mountain‚ and hillside. These individuals definitely depend on a combination of wind‚ and solar power due to the fact that they use smaller power grid that it is base off that of solar power‚ and have the use of large wind mills. These sources of power has origins
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coal and permanent renewable energy sources‚ like solar power.” More than thirty years later his announcement still rings true and is relevant. In fact‚ the current situation of non-renewable fuels is worse than in 1977. This is because American and global society is becoming more mobile and active‚ which is causing fossil fuels to be diminished at a higher rate than ever. Scientific discovery like the innovation of steam power and river power in the nineteenth century was a catalyst for meeting energy
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WRITING TASK 2: People nowadays work hard to buy more things. This has made our lives generally more comfortable but many traditional values and customs have been lost and this is a pity. To what extent do you agree or disagree? You should write at least 250 words. [Đề này lấy từ quyển CAMBRIDGE INSTANT IELTS‚ trang 95] I. INTRODUCTION: Phần mở bài‚ nên có: 1. Topic sentence(s): viết lại y của đề bài. Nhưng quan trọng là không copy y chang từ của đề‚ mà phải ‘biến tấu’
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technology. This tells us how to configure the system to meet a specific set of demand and what such a system will cost. It consists of renewable resources and backup power stations to supply electricity and heat into industrial‚ commercial and residential end users. In this study‚ the electricity market is supplied by the wind electricity‚ photovoltaic (PV)‚ and backup generators (which is equivalent to un-served load in this model)‚ and the heat market is supplied by biomass co-generation‚ geothermal
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used in power system studies such as probabilistic power flow‚ economic dispatch and reliability evaluations [12]‚ [13]. Evaluation of distribution system reliability based on Monte Carlo Simulation is one the well-known method in complex non-linear systems. This technique and method gets more information on the load point and system reliability index in comparison to the other method which is analytical method. Because of the uncertainty of both wind turbine and photovoltaic output power‚ it is not
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Sustainable Development‚ from Kyoto to Durban Germany vs. China Professor Frank Peng Chair of Economics Director of World Bank Studies School of Economics and Management Tongji University Shanghai December 16th‚ 2011 Table of contents Introduction.................................................................................................................. 1 From Kyoto to Durban ................................................................................................. 2 Kyoto
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we don’t use other type of energy there is the serious risk to our life and our environment. Alternative energy is environment friendly. And they cause little or almost no pollution. Here are types of alternative energies: Solar Energy‚ Wind Energy‚ Geothermal Energy‚ Hydroelectric Energy‚ Biomass Energy‚ Ocean Energy and Hydrogen Energy. This part will mention to types of alternative energy‚ pros and cons and the importance of alternative energy. There are many
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