Tuesday, April 2, 2019
Advantages Renewable Energy Resources Environmental Sciences Essay
Advantages Renewable vigour Resources Environmental Sciences Essay unitedly with the rapid growth of the world population, the limited ability to communicate of non-renewable leads to heftiness demand on a rise especi tout ensembley in growing countries. This situation results in the risk of depletion of cheap fogey vim and surroundal pollution as well as climate change. According to Loir, thither willing probably be sufficient oil and gas for this century, and blacken for 2 or much (Loir .N 2007, p.843). Or Edwin Cartlidge reports the annual total inhalation of cleverness sources by the world population is about 1.41017 kWh, of which the proportion of the dodo nada has government noteed for 90% of the vigor sources consumptiond (Physics World 7/2007). Therefore, researchers virtually the world take away been constantly trying to find solutions to diversify nix sources and reduce harmful emissions and greenhouse emissions into the environment and renewable elan vi tal sources gestate taken the spotlight. Thus, what is the renewable energy? The Oxford Dictionary (2000) defines renewable energy as natural energy that give the axe be used again and again and will never run out. There are four study types of renewable energy solar, hydro, wind and geothermal energy.This paper will wrangle advantages and disadvantages that renewable energy resource (RES) brings, as well as analytic thinking the importance of RES to the worlds hereafter.2. Discussion of findings2.1 Advantages of renewable energy resourcesThe use of renewable energy has many potential benefits, including humane beings and environment.Firstly, renewable is one of the intimately of importadvantages of renewable energy. Essence of RES is derivation from natural processes so the energy is sustainable and never run out. Truly, renewable energy is authentically important and incumbent to human beings when fossil burns are to a greater extent and more exhausted. With the neve r-ending supply of renewables, we would feel secure when having abundant supply of energy to last our planet, our human race and our economies, for generations and ever. Khemani (2011) says As long as human life is there, there will be earth, sun, wind and water, and the energy from these sources will too be available as long as they are there. With the abundance from many renewable resources and development of science and technology, he strongly believes that renewable energy screw meet the worlds energy needs immediately and tomorrow.Besides, one of the greatest pick energy benefits is that it is so much infract for environment than the use offossil renders that contribute heavily to issues much(prenominal) as acid rain, smog and general warm up. On the contrary, renewable energy has minor or no waste products such as ascorbic acid dioxide or other chemical pollutants. Renewable energy systems produce much pass up carbon dioxide emissions as opposed to carbon-intens ive fossil fuels such as oil, scorch and natural gas while they are being used solitary(prenominal) a small amount of fuel during the manufacturing of equipment (Walser 2012). With renewable energies, energy is commonly converted from one form to another without the creation of pollutants. Chandler (2006) takes solar energy an example, light energy from the sun can be converted like a shot to electrical energy using photovoltaic without the production of any pollutants like carbon dioxide or other greenhouse gasses. Similarly, wind power energy relies on moving air and converts it into electricity without polluting the environment. Therefore, it is obvious that the non-pollution or minimal impacts on environment are the positive advantages of renewable energy.Thirdly, another benefit of renewable energy is a diversified energy mix (Pasolini 2012). It is an important and necessary supplement for global energy security while fossil fuel sources are more and more running out. In well-nigh circumstances, renewable energy can be more reliable than other forms of electricity. For example, if the power grid gets breakdowns, renewable energy technologies such as generators powered by photovoltaics (PV) can supply electricity automatically. Efficient storage media such as batteries and fuel cells are keys for a renewable-powered grid. If battery storage is added to the system, it can supply electricity even after the sun goes down or through several(prenominal) cloudy or stormy days (Pasolini 2012).Finally, renewable energy not only is regarded as an unlimited resource but as well plays an important role to regional development. Renewable energy and energy efficiency can help revitalize rural communities (Parker 2010). For example, wind turbines or solar circuit board systems can provide energy and provide rural communities with new tax income revenue. Farmers on windy lands can lease space to wind developers, earning thousands of dollars for for each one turb ine every year.2.2 Disadvantages of renewable energy resourcesAlthough it is obvious to recognize the human as well as environmental advantages of utilizing renewable forms of energy, we must to a fault calculate some limiting sides from the energy.The biggest disadvantage of renewable energy is that the cost of the energy is relatively higher than non-renewable energy. The initial cost of renewable energy sedate make many people ignore it completely when comparing it with fossil fuel on two aspects total cost and over the resembling time period. For example, installation of solar energy water heater be many times in comparison with a heater, so they contumacious to buy heaters for hot water solution. According Global Wind Energy Council (GWEC) (2008) reported that turbine installation costs $ 47.5 billion by contrast, we only have to spend a much smaller amount of money to stimulate thermal power station about $ 2,25 billion (Shah 2011). He also pointed that other incidental costs such as maintenance costs and production costs cause price increasing. Generally, it is price that the reason has prevented approach shot and using clean energy as compared to the fossil fuel sources of energy. some other distinct disadvantage is relying too much on weather conditions and geographic locations to create energy (Sinclair 2011). Each types of renewable sources is just better meet to some places. This means that you cannot use each of these renewable sources in all locations. For instance, when using geo-thermal energy, you must be in a location that provides the environment for geo-thermal energy to be produced. Likewise, we cannot generate hydro-electric power without having a fast-flowing water source, such as a river or waterfall. In addition, the energy also brings some inconvenient problems. Take solar energy water heater as an example, it is inefficient because in summer ambient temperature are high and the use of hot water is not needed however, in the w inter we could not have hot water due to low light of the sun.In addition, Shah (2011) claimed that contempt the fact that most renewable energy sources are more environmentally friendly they may still have a disallow impact on the environment. He stated that hydroelectricity projects can cause a dramatic change in the development of wildlife and ecosystem along the river and flood risks.2.3 bunghole renewable energy supply the Worlds energy needs?With the significant benefits from renewable energy, we cant deny that roles of it are more and more important. According to Pulsinelli (2012), despite the world economic crisis, China spent $52 billion on renewable energy in 2011 and the United States was close behind with investitures of $51 billion. At present, renewable energy contributes about 20% in electricity consumed worldwide (Perkowski 2012). It is evident that the two nations, which took the head in renewable energy investment, have known thoroughly out the importance of re newable energy. Nowadays, by advances and achievements of science and technology scientists are having every confidence in intellectual future of renewable energy. According to the report of TheIntergovernmental Panel on humour Change (IPCC) in 2011, renewable sources occupied about 13 share of the worlds energy in 2008 and the proportion likely to have risen. The report also point out that within four decades renewable energycould account for almost 80% of the worldsenergy supply. The statistics are completely appeared in the practiced future if we meld four main alternative resources and use hydroelectric to fill in gaps, which makes easier to match demand. The most important thing is to combine renewable energy sources into a bundle (cited in Bergeron 2011).Particularly, in research (Edenhofer et al. 2011) shows that by 2050, geothermal energy could meet more than 3 pct of global electricity demand and about 5 percent of the global heat demand, hydropower will contribute abo ut 30 percent of worldwide electricity supply, wind power will grow to more than 20 percent and solar energy becomes one of the major sources of energy supply with about 15 percent.3. ConclusionFrom all finding above, it is clear that renewable energy plays a role more important with every exit day to both human beings and environment. By abundance renewable energy is becoming an important solution to the worlds energy need. Besides, renewable energy also brings many positive impacts to protecting environment, diminishing effects of global warming or pollutions. Despite some drawbacks of the energy, there are also reasons to believe the problems will be solved soon thanks to strong investment of government and efforts scientists. The exploiting and converting from traditional sources into renewable energy resources is a favorable turning-point to us. The future is indeed bright and will be lit by alternative energy.