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Different sources of renewable energy essay
Different sources of renewable energy essay
Different sources of renewable energy essay
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Curiosity and desire have led man to the peak of material progress. Discontent has always prompted him to change his environments and living conditions. Change is fundamental law of life for no change no progress. The more the peoples of the world have tried to change and ameliorate and better their lot, the more they succeed. The magic wand behind the spectacular and sustained progress has been the scientific technology. When we survey the achievements of men in their historical perspective; we get a clear idea about technological development from the earliest days from simple to sophisticated.
The Present era is the era where energy is the basic resource which is essential for living. The present age can easily be termed as Fossil Fuel Age (Hogan,1982) because 93% of the total world’s energy comprised of oil, coal and natural gas, this is surprising because only a century and a half ago the figures were reverse. Fossil fuel provides only 5% of energy while the animals and humans supplied 94% of it (Grubb et. al., 2006).
This extensive usage of fossil fuel seriously endangers the environment of our planet. Everyone is desperately trying to devise such energy resources that can not only save the planet from plunging deep into the pit of destruction and catastrophe but also will be more feasible economically.
It has been discovered that United States of America, whose population is just 6% of the total population of the world, consumes almost one third of world’s total energy resources (Reddy et. al., 1989). However, Energy resources are not infinite. In fact we are consuming the energy with such a pace that it has been estimated that world would be facing energy crisis after 2030.
Significant progress has been made all over ...
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...ive strategy for sustainable development it is necessary that flexibility and forward thinking must be considered. It looks obvious that only such countries will survive in this turmoil who are prepared for the future.
The major step of the strategy is to continue to reduce pollution and seek energy saving on the cost efficient basis. For this purpose we have discussed the economic and environmental aspects of different energy resources.
As far as the renewable energy resource for future use is concerned, liquid hydrogen seems the most appropriate choice. Although hydrogen when used as a fuel does release environmental pollutants, but their emission is about one-third times less than that produced by gasoline. Hence, based on the comparative analysis, hydrogen is much superior in terms of quality, cost and efficiency than other energy resources (Sorenson 2005).
The. Ganz, Cheryl R. "Science Advancing Mankind." The Society for the History of Technology. 2000. The. Haskell, Douglas. A. A.
The 20% of the world’s people who live in developed countries use 70 % of the world’s energy.
America is threatened by the destruction of their own environment. United States is known for their innovation towards alternative energy like solar power, wind power and nuclear power. However , these alternative energies are not completely beneficial towards the United States.
There are several factors influent whether or not a particular type of energy is adopted. These factors include cost, reliability, environmental impact, generating capacity, and efficiency, possibilities of hybrid designs and storability, and technology development risk. While renewables are not being developed fast enough to meet demand, the best available option may come from conventional energy sources. Among them, nuclear power which is well developed and highly penetrative is the largest source of electricity that does not release significant amounts of greenhouse gas and has been contributing mostly to world energy use.
The year is 2200. The world is going through a fossil fuel shortage. Oil reserves are almost completely consumed and it is becoming impossible to find new fossil fuel sources. Not prepared for this event to occur, The United States, has no alternative options. As a result of the oil shortage, the standard of living deteriorates. Heat in homes, supermarkets full of food, and transportation, all basic necessities taken for granted, will be depleted because fossil fuels are used to power almost everything. The key to the prevention of this future is renewable energy. Unfortunately the support for the use of renewable energy is weak and ineffective. Unless the US puts forth effort to research and promote the use of renewable energy to consumers, conversion from fossil fuels to renewable energy will no longer be an option.
The first type of renewable energy is hydroelectric energy or well known as hydropower. In greek word, hydro means water and thus hydroelectric energy refers to electricity generated using flowing water at high velocity. Lutgens and Tarbuck (1992, p. 163) stated that “running water is of great importance to people as we depend upon rivers for energy, travel and irrigation”. Continuous availability of water in universe made water to be the main source of hydroelectric energy. Water has been widely utilized by mankind since the beginning of civilization and wate...
Over the last two centuries, humanity has become increasingly reliant on fossil fuels. Over that time, the consequences of constantly burning fossil fuels have accumulated into a threat to industrialized cities. The burning of fossil fuels causes acid rain to shower on cities and ecosystems around the world, tormenting their inhabitants. The increasingly deadly pollution caused by the burning of fossil fuels has caused the deaths of many people around the world by causing respiratory problems. Not only has the pollution worsened, but the supply of fossil fuels is not limitless – as humanity’s reliance increases the supply decreases, and that is all the more reason to break humanity’s reliance on fossil fuels. Fossil fuels should be replaced with cleaner alternatives because fossil fuels cause environmental hazards, are non-renewable, and are detrimental to human health.
Is Scientific Progress Inevitable? The Development Study of Advances in Technology According to the article “is scientific progress inevitable?” we can understand that advances in technology are in the order of nature and advances in technology are regular. This article may expand many ideas about the progress and development of technology. Technology must be progress, but the progress of scientific discovery may not be able to promote social development in a short time.
The present world with its sustainable resources, environment and way of life became developed. The population growth, consuming almost all the available resources, to meet people’s needs, should be a major concern. The consumption of material and energy around the world which is about to eliminate the available supply, has increased over the last two decades, especially in the built environment. In order to access other reserves of fuel, the more energy will be needed to use.
Hart, David. " Hydrogen: A Truly Sustainable Transport Fuel?" Frontiers in Ecology and the Environment 1.3 (2003): 138-45. Web. Kühne, Reinhart. "
The three fossil fuels- coal, crude oil, and gas slowly formed over millions of years. These days, we use fossil fuels to power everything- homes, buildings, cars, computers, lights, etc. However, fossil fuels deposits will run out soon, which is a huge problem. Extracting, transporting, and burning fossil fuels are dangerous. There are also many negative biological and environmental impacts that result from the use of fossil fuels, such as ocean acidification, groundwater contamination, land subsidence, oil spills, and global warming. Therefore, we should be trying to reduce our dependence on fossil fuels and explore alternative energy sources such as wind energy, hydroelectricity, and solar energy instead. Our world depends on fossil fuels, but they can also hurt us. Fossil fuels are both a blessing and a curse.
The application of scientific knowledge to. serve men in industry, commerce, medicine and other fields. Humans have always searched for a way to make things faster, stronger, smarter, better..for mankind. This, it was widely thought, would make life easier. With the advancements made in technology throughout the millennium, the way of living has become easier. In the thousands of years that had passed, man had gone from living in caves to living in houses, from speaking in grunts to having a formal written and spoken language, from hunting and teaching, to hunting for mere survival, to going to school and working in a place of some sort to provide for your family, from barter and trade to a formal monetary system, from clans to cities and states; yes mankind was on the up and up, and blazing trails at record speed.
Energy can be put into two broad categories Renewable energy and none renewable energy. Renewable energy sources can be reused continually as they are abundantly found in nature. All of them are non-polluting but devices used to collect the energy may impact the environment adversely. They are free but producing storage equipment or converting them into another form of energy may be costly.
The world that we live into today affords us the expectation that the flip a switch will turn the lights on. As populations increase and developing nations undergo dramatic economic growth, this energy demand will only continue to grow. The International Energy Agency (IEA) believes that “the world’s energy needs could be 50% higher in 2030 than they are today” (ElBaradei). Given this projected growth, it is necessary for world leaders must take action to secure the energy supply. Meaning that world leaders need to start seriously considering an alternative to non-renewable energy sources. “In 2012, the United States generated about 4,054 billion kilowatt-hours of electricity. About 68% of the electricity generated was from fossil fuel (coal, natural gas, and petroleum), with 37% attributed from coal” (U.S. Energy Information Administration). The fossil fuels that are used to supply over half of our country’s energy are in finite supply and are increasing in price to astronomical heights.
Fuels like coal, and oil that once were a fine innovation in creating energy are now rapidly deleting and one day will be gone forever; energy that won’t last is often referred to as non-renewable energy. Besides being set up to fail and become inefficient in the future, fossil fuel energy is not clean to use and poses several environmental complications. Coal, for instance is “the dirtiest of all fossil fuels. Coal combustion not only produces sulfur oxides and nitrogen oxides that contribute to acid rain and snow, it generates millions of tons of particulates that cause asthma and other respiratory diseases.” As with all usage of fossil fuels, it creates enormous amounts of carbon dioxide, which contributes to greenhouse gas. Not only are fossil fuels dirty, they also pose as a security risk and unforgiving on the American wallet. (Saini)