Since the discovery of fire until late 19th century , human beings relied on renewable energy as an essential part of their life .The present world is moving quick towards improvement of human progress. Enterprises, manufacturing plants, control plants, different government foundations, logical establishments, private associations are experiencing childhood with the premise of accessible characteristic vitality sources. Be that as it may, these sources are restricted and costly. Fossil fuels are the fundamental sources that are being utilized to deliver vitality today. They are quick draining as well as polluting the earth, and influencing the financial soundness of numerous nations.
Hydropower plants in 2009 were providing almost 16.5% of the global electricity production which is equal to 3 329 TWh. This is around 85% of the total renewable electricity generation.These statistics are expected to increase as the governments and investors are now more into hydropower energy since its clean reliable and affordable. hydropower storage in reservoirs. When the production of electricity in a certain country becomes excessive the sluice gates of a dam can be shut down thus saving the water and storing the energy. the hydropower reservoirs are able to store the energy for years if not needed.
Buildings including construction, operations and deconstruction impacts, use approximately 15% of the world’s fresh water resources, 40% of the world 's energy and produce approximately 30% of the world 's greenhouse gas emissions. The analyst forecast global market to grow at a CAGR of 9.6% during the period 2016-2020.To prevent the worst effects of global climate change and minimize other negative environmental impacts, it is therefore important to address the environmental impacts of buildings. In fact, energy efficiency reductions in the construction and operation of buildings, offers one of the single most significant opportunities to reduce man’s impact on climate change. Globally most of the energy used is produced from fossil fuels like coal, oil, natural gas, and a direct consequence of using these fuels is that greenhouse gasses are released into the atmosphere, with one of the most significant being carbon dioxide (CO2). These gasses emitting infrared radiation, contribute to global warming and climate change.
To quantify the benefits of hydroelectric dams is a complex task, having an important role in energy security, yet producing sizable impacts on the local environment and communities. Now a day Ethiopia built up alternative energy resources in different areas. So, Water had power by both its motion (kinetic energy) and by its position (potential energy). To make this energy usable, prime movers such as water wheels are required. Earlier in the history of energy development and use, water wheels provide power by direct connection or with pulley and gear systems to drive various machines, such as grist mills and textile mills.
Title of Project: Project HydroGen Background Hydropower is one of the most flexible and consistent renewable energy sources. It is able to meet base load electricity requirements in many situations as well as meeting peak and sudden surge in demand due to shortages. According to World Energy Council, there are over 160 countries in the world that produces hydropower, with a total capacity of 936 GW across 11000 hydropower stations. Hydropower is basically the use of fast moving water in moving a turbine to produce electricity. This converts kinetic energy directly to mechanical energy and then electrical energy.
As we stepped into the 21century the rate of energy consumption has raised dramatically due to the advancing of technologies. People start to realize the importance of environmental protection, and an alternative way of producing energy has become a necessity. The goal of “an 100% clean and renewable future for energy supply” has been adopted by many countries around the world. However, is this goal feasible? I will discuss the question “how far can the alternative energy replace fossil fuels efficiently?” within this essay by comparing the advantages and disadvantages of both energy resources, and the local, national and global perspectives combining with my own opinions then draw out the conclusion.
Industrial Pollution is a pollution that can be directly linked with industry, in contrast together pollution source. This form of pollution is one of the most leading causes of pollution in UAE. While the overall air quality in UAE is better than in many developed countries, but the issue will probably need more attention as the country grows. UAE have great cities here, which are growing and every time there is growth in human activity, there is an increase in pollution. Methodology: The report was undertaken by searching the databases: Google Scholar, Ebscohost ,and other primary resources such as articles ,internet, books to find an answer for the main causes and solutions to treat this issue.
Extensive use of energy in the building sector is one of the reasons of climate change. Advancements in technology have led an approach in design dependent upon excessive energy consumption. Industrialised building methods are based on an extensive use of high-energy materials, such as cement, aluminium, plastics, steel and concrete. Besides environmental problems, on a large scale use of new and synthetic building materials causes serious health problems (Coch, 1998; Jacobsen, 2009). Annually, the building sector accounts for 40% of global energy use and the residential sector is responsible for nearly 30% energy use (UNEP, 2007).
Modern society consumes large amounts of fuel, and the energy industry is a crucial part of the infrastructure and maintenance of society in almost all countries. Since now energy plays an essential role in industrial societies, the ownership and control of energy resources plays increasing role in politics. The energy industries councils provide one of the most comprehension sources of energy projects and business intelligence in the energy sector today. Renewable technologies use natural energy to make electricity. Energy management involves utilizing the available energy resources more effectively that is with minimum incremental costs.
Meeting the demands of consistently increasing population and other sectors of economy water has become an asset because of its essential role in every work. As modernization is on the verge of its highest peak, leading to the changing lifestyle of people and economy of a country as well. Increasing demand of industrial and agricultural commodities led to the evolution of water crisis lacunae to be checked for securing future of a nation and globally ( Brooks, 2007). Overall water use of agriculture, industrial and domestic sectors are 90%, 7% and 3% respectively (AQUASTAT,2015) . This reflects the agricultural sector sucking the major part of water resources as compared to other sectors which is very negligible.