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Nuclear Power

Nuclear Power. Grace Liz Dione Blair. The Principle of Nuclear Power. What is Nuclear Reaction. Principle: E= mc² Nuclear fission Nuclear fusion Nuclear decay (radioactive decay). Nuclear Decay. The release of radiation by radioactive isotopes (radioisotopes) for short

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Nuclear Power

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  1. Nuclear Power Grace Liz DioneBlair

  2. The Principle of Nuclear Power

  3. What is Nuclear Reaction • Principle: E= mc² • Nuclear fission • Nuclear fusion • Nuclear decay (radioactive decay)

  4. Nuclear Decay • The release of radiation by radioactive isotopes (radioisotopes) for short • Unstable nuclei • Spontaneously & slowly • Three types -αdecay -βdecay -γdecay

  5. Nuclear Fusion • Two or more nuclei combine to form a larger nucleus • Release of large quantities of energy • The nuclear reaction in the Sun

  6. Nuclear Fission • An atomic nucleus is split into two or more large fragments • Produces free neutrons and photons (in the form of gamma rays) • Releases a very large amount of energy

  7. Nuclear Power Plant

  8. Pros and Cons of Nuclear Power

  9. Pros and Cons of Nuclear Energy • 2 main ways to use the nuclear energy • Nuclear power Nuclear power plants provide about 6% of the world's energy and 13–14% of the world's electricity, with the U.S., France, and Japan together accounting for about 50% of nuclear generated electricity. • Nuke United States the Soviet Union The United Kingdom France the People's Republic of China

  10. Nuclear Power • Prows • Security Only 3 major incident happened in about 50 years history of Nuclear power plants ( Three Mile Island accident Chernobyl disaster Fukushima Daiichi nuclear disaster ) 2. Environment friendly • clean energy won’t discharge a great amount of pollutant to the atmosphere won’t produce carbon dioxide that can cause greenhouse effect • Efficient 50 tons of nuclear fuel = 100000 tons of coal

  11. Nuclear Power • Cons • Fatalness • limitations site selection is very strict 3. investment need large investment

  12. Nuke • Pros Large power radioactive pollution has serious destructive effect to the environment and human health • Cons balance power’s Military might, decrease the probability of world war.

  13. Difference Between Nuclear Power & Coal Power

  14. Nuclear Power • Use uranium （50 years） • Price stability • Nuclear power plants typically have high capital costs for building the plant, but low fuel costs. • Dangerous solid waste • Against talking from local • Waste heat

  15. 0.075 £/KWH 0.054 £/KWH 0.032£/KWH 0.023£/KWH

  16. Coal power • Use coal • Coal-fired power is the oldest, is also the most important one. • Utilization just 60%-70% • Produce acid gas, smoke and noise

  17. Nuclear power VS society

  18. What Does It Bring to Us? • As of 2005, nuclear power provided 6.3% of the world's energy and 15% of the world's electricity, with the U.S., France, and Japan together accounting for 56.5% of nuclear generated electricity. • The United States produces the most nuclear energy, with nuclear power providing 19%of the electricity it consumes, while France produces the highest percentage of its electrical energy from nuclear reactors—80% as of 2006.

  19. The Focus of the Public • The safety of nuclear power plant. • The political problems about nuclear power. • Nuclear weapon • The economic value • Human health • The environmental problems • If it can replace the energy of burning fuel and slow down the global warming?

  20. Some serious nuclear and radiation accidents have occurred. Nuclear power plant accidents include the Chernobyl disaster (1986), Fukushima Daiichi nuclear disaster (2011), and the Three Mile Island accident (1979). Fukushima Daiichi nuclear disaster let people began to question the safety of nuclear power and worry about the nuclear radiation. The risk of the nuclear disaster occur is smaller than other electrical plants such as fuel burning and water power plants. http://www.tudou.com/programs/view/s61VB2XDzRs/?fr=rec1

  21. If its investment is larger than it contributes to the environment? • Government support

  22. The radiation of nuclear has little effect on human health compare with the radiation we regularly absorb from nature. • American research about people who live closely to nuclear power plant. • The nuclear radiation surrounding us is not out of standard that can affect our health.

  23. Life cycle analysis (LCA) of carbon dioxide emissions show nuclear power as comparable to renewable energy sources. Emissions from burning fossil fuels are many times higher. • Nuclear fission release some gas such as Iodine-131 and xenon-133 but they are stored and after undergoing their half-life, they are released and at that time, they are not dangerous any more. • It will not release sulfur dioxide，nitrogen oxides, mercury and carbon dioxide.

  24. Dependence of Nuclear Power • Some countries rely on it too much, so if it has disaster, the electricity cannot be provided for citizens. • But some countries have a little resource to support them to develop other new energy . • With some nuclear disaster occurred，people suggest not to be too dependent on it. • Nuclear power is a important potential energy, but we cannot abuse it.

  25. Thank you.

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