2-4 問題討論

2-4 問題討論

What is Energy and how can it change form?
它怎麼是什麼能量和改變形式？

Some Types of Energy Are More Useful Than Others
能量的一些類型比其他有用

Energy quality is measure of an energy source capacity to do useful work
High-quality energy is concentrated and can perform much useful work
EX- amples are very high-temperature heat nuclear fission concentrated sunlight
High-velocity wind and energy released by burning natural gas gasoline or coal
By contrast low-quality energy is dispersed and has little capacity to do useful work
An example is heat dispersed in the moving molecules of a large amount of
Matter (such as the atmosphere or an ocean) so that its temperature is low
The total amount of heat stored in the Atlantic ocean is greater than the amount of high-quality chemical energy stored in all the oil deposits of Saudi Arabia yet because the oceans heat is so widely dispersed it cannot be used to move things or to heat things to high temperatures

翻譯
能量質量是能源能力的措施完成有用的工作 集中優質能量并且可能进行有用的工作前的amples是非常高溫熱核分裂被集中的陽光高速風和能量通过燒天然气汽油或煤炭發布了相反低品質能量被分散并且有一点能力完成有用的工作例子是在移動的分子分散的熱很多事關(例如大氣或海洋)，以便它的溫度是低的在大西洋存放的熱的总额比在沙特阿拉伯的所有石油储备存放的相当数量偉大優質化学能，因為海洋熱那么廣泛被分散它不可能被用于移動事或加熱事到高溫