Similarities And Differences Between Solar And Wind Environmental Sciences Essay

Similarities And Differences among Solar And Wind Environmental Sciences EssayAt present, military personnel beings be living in a society which is developing rapidly, facing a severe crisis of vitality. As the population is increasing in a blue speed, the ecological environment has been damaged by human activity. At the resembling time, with industry noblely developed, the environment has been polluted seriously. Therefore, other alternative energies should be found instead of fossil fuels, which is green, efficient and renewable. Thus, people began to discover the wideness of renewable faculty sources, for instants, solar, biogas and water. In fact, the majority of renewable zero sources ascend from the solar button, which means they can be exploited for centuries and even millennia. In this essay, wind energy and solar energy be put in a comparison. Both of them are clean energy and environmentally-friendly, although they differ in cost and efficiency.The first import ant similarity of wind energy and solar energy is that both of them are renewable. Solar energy is the most exuberant energy resources that human can accommodate use of. It is estimated that during the past thousands of days the sun consumes only 2% of its own energy (Duncan, 2002). In the conterminous few billion years there go away not be significant changes to the sun, so the sun can be use as a permanent source of energy. Likewise, wind energy is also un express. Be get to it is generated by air flow on the Earths surface. Wind is everywhere, no matter it is in the vast grass lays or mountains. Wind indicator can be extracted by wind mills. As the wind makes wheels rotating, it is changing the wind index into galvanic index. Obviously, these two kinds of energy both come from the nature, which are totally recycled. other similarity is that both wind energy and solar energy vex almost no pollution to the environment. Compared to the environmental effects of traditional energy sources, the environmental effects of solar energy and wind energy are relatively minor. Coal, oil and other fossil fuels emit harmful gases and residue, plot the use of solar energy will not bring well-nigh pollution. Moreover, it will not produce any unfortunate effects on the environment, which is a clean source of energy. Meanwhile, after the extensive use of solar energy, the temperature will be slightly increased, although this temperature will not cause adverse effects on the environment and the ecological balance (Friis-Christensen and Lassen, 1991). Wind office staff consumes no fuels, and emits no polluted air. Wind energy is abundant, almost perpetually apply, widely distributed and clean. Further more(prenominal), both of them dont produce carbon dioxide, which do not cause the babys room effect. All in all, both of them bring peace to the environment.In spite of these similarities, wind energy and solar energy are opposite in some aspects. At present, th e use of solar energy technologies has the damage of high cost. Topfocus (2007) stated that the cost of generating electricity by solar big businessman is about 7-12 times higher compared to the normal electricity, and 6-10 times higher compared that of generating electricity by wind tycoon. Furthermore, in many rainy areas with short period of sunshine, it is very difficult to completely rely on solar power supply. This means unless there are a large number of solar panels or there is a more sophisticated solar energy engineering, it is still difficult to produce a large number of power supplies to meet the daily bespeaks. In addition, solar panels shit a limited lifespan, which is about 10-20 years. This means the cost to deal with the technical problems is extremely high (Brignall, 2010). In contrast, the wind turbines have longer lifespan, although it requires a lot of land to build. As long as the turbines have been built, it can be used for hundreds of years. In the sho rt term, the base costs of wind turbines are relatively cheap. (Alvesta, n.d.)Another difference exists in the efficiency. Using solar energy is more efficient than wind energy. According to Duncan (2000), about 70% of sun energy can be received by the earth. In order words, more power can be collected by the solar panels. Furthermore, the materials used on the solar panels are silicon, which has less resistance in the power generation process (Ffbing, 2009). Compared to the solar energy, wind energy has short rough-and-ready time and need to be built near the sea. When wind power is transformed into electric power, the efficiency is only about 20 % (Chapo, 2006).In conclusion, after comparing solar energy and wind energy, both of them have advantages and disadvantages. The solar energy solve the problem that human will not afraid there are no energy to use. However, the technologies still need to improve. Using wind energy is cheaper and more direct, although it needs high technol ogy to be more efficient. At present, Chinas environmental pollution problems highlight the daintiness of ecosystems. A large number of mining and the use of fossil fuels make a wide impact on the environment, especially in Chinas energy consumption structure. The high proportion of coal, carbon dioxide emissions growing faster, which has a great impact on climate change. Development and utilization of renewable energy plays an important role in optimizing energy structure and protecting the environment, which reduces greenhouse gas and cope with climate changes. In my opinion, the renewable energy will play an important role in peoples life and let human have a better future.