In the 21st century, a series of grand challenges are waiting for engineering solutions. People are concerned over problems of sustainability, health, vulnerability and joy of living. However, the most worrying problem human beings are faced with is the scarcity of energy. Some sources of energy like fossil fuels will not last long. Scientists are trying to make use of other resources. Sources of environmentally friendly power are expected since the earth cannot afford to more pollution. To make solar energy economical should be the most important idea.
There are three reasons why making solar energy economical should be the most important idea. First of all, the energy of the sun is plentiful. "Even though only a small fraction of the sun's output strikes the Earth, that provides 10,000times as much as all the commercial energy that humans use on the planet, a report by National Academy of Engineering of The National Academies shows. It will be enough to support humans' development if solar energy is efficiently used. In addition, solar energy technology is potential. According to DOE (U.S.Department of Energy), experiments have reported some new materials which can efficiently absorb energy from the sun. Researchers are trying to make those cells to be more economical. Finally, sunshine is a kind of non-pollution resource. Sunshine is created by nuclear fusion within the sun. There is nothing left after using the energy. The environment will be more comfortable for us to live in. As a result, diseases caused by pollution will reduce. The three reasons mentioned above are not all the sakes for which making solar economical is important, they are the main excuses.
In conclusion, of all the challenges, making solar energy economical should be attached great importance to because the amount of solar energy is huge, the solar energy technology is potential and sunshine is environmentally friendly.
Reference(s):
DOE (U.S. Department of Energy). 2007. Solar America Initiative: A Plan for the integrated Research, Development, and Market Transformation of Solar Energy Technologies. Report Number SETP-2006-0010. Office of Energy Efficiency and Renewable Energy Solar Energy Technologies Program. Washington, D.C.DoE.
Thursday, August 21, 2008
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4 comments:
You have the same idea that we need to find sources of environmentally friendly energy. And solar energy may be the important source for us to consider. It is a free and non-polluted source but the major problem is how to make use of it. However, engineers in the 21st century will come up with the way to use it effectively.
your article focuses on the energy.as we all know, our human beings is facing the energy crisis. we are trained as an engineeres in the future so it is very important for us to think about it and we should try solve this problem by technology.
Hi,mingbao. you share your point of view in a good aspect. energy is a really big problem concerned by almost every country. and the way you express the idea is also very clear. But I do not understand the last sentence of the second paragraph and when I also ask a guy who comes from Malaysia, He do not understand, either. Maybe you can change some words to make your meaning clear. thank you
I do agree that solar energy is a good source of energy. As stated in your article, it has many advantages over other form of energies. However, the technology in this field is still very immature. Scientists and engineers are still finding ways to fully utilize this energy. Hopefully in the near future, solar energy will be more widely used.
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