[懸賞100]關于電的energy-英語論文

【專家解說】：從網上給你找的,看合適不?不合適的話再給你找. Energy Energy makes the world go, It is indispensible to both animal life and human life. We get heat energy from the food we eat, light energy from the sun and electricity from water. In the hot summer when there ia a power outage we feel all the more the need for electric energy which powers the electric fan md air-conditioner.There are different sources of energy. The rivers and streams are a good source for electrie energy. The san provides us with light, heat and electricity. There is also sound energy in the radio transformed from electric energy. The energy can be changed from one form to another. It can never be exhausted nor reproduced. It just goes on changing in cycles.It is important for us to make use of energy. Solar energy is being made to generate electricity, to cook and to bathe. Atomic energy is used in industry and aviation and many other fields. We are now doing our best to inake energy serve our people in every way possible 這是關于解決能源短缺的文章: Energy shortage is a very serious problem in the world. Many people worry that energy resources on the earth will be exhausted if we use them in an unchecked way. This, most people agree, will cause serious problems and even crisis and jeopardize the survival of mankind . On the one hand, most people agree that the problem can be solved in one way or another. One is to conserve and save our energy. Energy refers not only to coal, oil, or natural gases but also to goods, land and water, etc. Most countries have realized the wastefulness in their using of energy. They are trying to conserve energy. For example, some countries have a daylight saving system to use less electricity for lighting. Some cities have enforced water savers at public such as restrooms and bars. Some have enforced serious penalties on overuse of electricity, water, and farming land. By these means, people hope the drain on energy resources could be slowed down. However, conservation alone cannot solve the problem. Another way, perhaps the best I think,, is to develop new energy resources. Obviously, no matter how hard we try to save energy resources and how abundant they are, we will use them up sooner or later. I think there are many energy resources that we can develop and utilize. We don%26rsquo;t have to depend only on the current conventional energy resources. There are many other energy resources that we can develop such as nuclear power, waterpower and solar power. These resources, if developed, can completely replace the conventional energy and thus solve the problem of energy shortage. 這是具體關于太陽能的并附翻譯: In general vacuum tube collectors are used in solar process heat systems. Another possibility is to use transparent insulated flatplate collectors. A critical point however, is that most of the common transparent insulating materials can not withstand hightemperatures because they consist of plastics. Thus, temperature resistive collector covers combining a high transmisivity with alow U-value are required. One possibility is to use capillaries made of glass instead of plastics. Measurement results of collector efficiency and incident angle modifier will be presented as well as calculated energy gains forthree different collectors: a vacuum tube collector (Giordano Ind., France), a CPC vacuum tube collector (microthermEnergietechnik, Germany) and a new flat plate collector using glass capillary as transparent insulation (SET, Germany). 一般來說，太陽能熱利用系統(tǒng)中都是采用真空管集熱器。另一種則是采用透明絕熱的平板集熱器。然而由于普通透明絕熱材料是由塑膠材料構成，一個關鍵問題就是不耐高溫。因此，需要一種既耐高溫又具有低傳熱系數的透明集熱蓋板，而使用由玻璃制成的毛細管替代塑膠材料則成為可能。 文章將提供集熱器效率、附帶的角度改變量以及3種不同類型集熱器的得熱量的測試數據。這3種集熱器分別是某種真空管集熱器；某種CPC真空管集熱器；一種使用玻璃毛細管作為透明隔熱材料的新型平板集熱器。