wk 7 - D Shaw Public Opinion on nuclear energy Cherno byl...

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Unformatted text preview: 2/21/11 D. Shaw 2/24/10 2/21/11 Public Opinion on nuclear energy Cherno byl TMI accident IPCC report 2/21/11 Summary of discussions last week… . The resurgence of nuclear power is largely due to concerns about climate change h Considering binding energy per nucleon Q, we showed that 2 nuclear reactions lead to an increase in Q: fission and fusion. Fusion is not expected to generate commercial power in the next 50 years Fission has proven safety records, but 4 areas need further improvements. 2/21/11 Issues of Nuclear Power  Cost  Safety against terrorism  Proliferation  Waste Disposal 2/21/11 Radioactivity  There is an urgent need for public understanding about the usefulness and danger of nuclear radiation.  There is a very low level of radioactivity in nature, including our body.  High level radiation causes cancer, however, our understanding of the cancer-causing processes is limited. Developing embryos and fetuses are very receptive to radiation damages. 2/21/11 Today’s outline  Reactor structure components Why are they different from the fossil fuel power plants? The 4 issues  The fuel cycle Once-through open cycle Close cycle: full actinide * recycle  MIT report Safety A series of chemically similar metallic elements with atomic numbers ranging from 89 (actinium) to 103 (lawrencium). All of 2/21/11 Reading assignment  Chapter 8 Skip 8.11 – 8.14, 8.16, 8.19 2/21/11 Nuclear Reactors 2/21/11 Coal/Oil/Gas 2/21/11 יוא ר Pollution Emission control Generato r Coal Turbine Air Coal-fired Power Plants 2/21/11 Energy Taken out by Steam Turbine 2/21/11 Worldwide Nuclear Power Reactors (2007)  There are 440 nuclear power reactors in 31 countries.  30 more are under construction.  They account for 16% of the world’s electricity.  They produce a total of 351 gigawatts (billion watts) of electricity. 2/21/11 World Nuclear Power Plants Nuclear Electricity Production by Countries and Regions in Gigawatts (World Total 350 Gigawatts) US 97 Trend: declining North America Region 109 France: (1/5) U.S. population 63 Increasing Germany 21 Being phased out U. K. 12 Western Europe Region 126 Japan 44 Increasing Asia Region 66 Increasing Eastern Europe Region 11 Former Soviet U. Region 34 2/21/11 How a Nuclear Reactor works  235U fissions by absorbing a neutron and producing 2 to 3 neutrons,...
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This note was uploaded on 02/20/2011 for the course EE 571 taught by Professor Dr.davidshaw during the Spring '10 term at SUNY Buffalo.

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wk 7 - D Shaw Public Opinion on nuclear energy Cherno byl...

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