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Juan Luis García Martínez
Carmen Gª-Calvo López
Enrique Gª-Tenorio Corcuera
2ºC-D
Nuclear energy
 Nuclear energy is the energy
 released in nuclear reactions.
 However, we also refer to
 nuclear energy as the use of
 that energy for other purposes
 such as providing
 electrical, mechanical and
 thermal energy from nuclear
 reactions.
What is nuclear energy?
             Nuclear energy is a
             physical-chemical
             process in which a lot of
             energy is released(called
             nuclear energy). We will
             explain the process
             caused in nuclear
             reactions in which this
             nuclear energy is
             obtained.
We analyze the two main methods
of obtaining nuclear energy:

       Nuclear fission
       Nuclear fusion
Nuclear fission
 Nuclear fission is one of the
  two possible reactions that
  take place when we work
  with nuclear energy.

 We called nuclear fission
  the division of the nucleus
  of an atom. The nucleus
  becomes many fragments
  with a mass almost equal to
  half the original mass plus
  two or three neutrons.
Nuclear fusion                 A clear example is seen in
 Nuclear fusion is a nuclear   the solar energy that
 reaction in which two nuclei   comes from the fusion of
 of light atoms combine to      hydrogen
 form one heavier               nuclei, generating helium
 nucleus, releasing a           and releasing a large
 large amount of                amount of energy.
 energy.
Advantage                           Distribution of nuclear
                                        energy in Europe
 A third of the energy
                              Findlandia
 generated in Europe            Bulgaria
 comes from nuclear                Suiza                  Distribution
 energy, this implies that      Armenia                   of nuclear
                                 Ucrania                  energy in
 emit 700 million tons of                                 Europe
                              Eslovaquia
 CO2 and other                   Francia
 contaminants generated                    0   50   100
 from burning fossil fuels.
Advantage
 Fossil fuels will be exhausted in a not too
  distant future. One of the great advantages
  of using nuclear energy is the relationship
  between the amount of fuel used and the
  energy obtained.
                                         Years
 Here is a graphic
  which shows how        Petrol

  much time               Coal

  will non-renewable Uranium                                 Years
  last.                   Coal

                              0       100        200   300
Advantage
 As an alternative to fossil
  fuels as carbon or oil, we
  would avoid the problem
  of so-called global
  warming. It will improve
  the quality of air we
  breathe.
Disadvantages
                 The main disadvantage is
                  that the responsibility falls
                  on people. Irresponsible
                  decisions can lead to
                  accidents at nuclear plants.
                 One of the main problems is
                  the generation of nuclear
                  waste and the difficulty to
                  manage as it takes many
                  years to lose its
                  radioactivity and dangerous.
                 Let’s see a real example of
                  how irresponsible decisions
                  can cause a disaster.
The nuclear accident of Chernobyl.
 On the 26th April 1986, the
  reactor number four of the
  nuclear plant of Chernobyl suffer
  the most nuclear accident of the
  history.
 The consequences of the disaster
  affecting an area of ​nearly 5
  million
  inhabitants, contaminating 23%
  of the surface of neighboring
  Belarus, parts of Russia and
  Ukraine and parts of
  Poland, Czech Republic and
  Germany.
Disadvantages
 Nuclear fusion is
 unfeasible because of the
 difficulty of heating the
 gas to such high
 temperatures and to
 maintain a sufficient
 number of cores for a
 time sufficient to obtain
 energy and retaining the
 gas is highly expensive.
Important nuclear plants in Spain.
 The most important are:
 Sta. Mª de
 Garoña, Trillo, José
 Cabrera, Cofrentes, Ascó
 I-II, Almaraz I-
 II, Vandellós II.
How does a nuclear plant works?
 First, in the nuclear reactor, nuclear
  fission occurs. This reaction
  generates a lot of heat used to heat
  water. The water transformed into
  high-temperature steam, reaches
  the turbine which rotates. It
  transforms heat into kinetic energy.
  The turbine is connected to an
  electric generator which can
  transform kinetic energy into
  electric energy. The steam exits the
  turbine and, as it is still hot, it must
  be cool. Whe it leaves the turbine, it
  reaches a condensation tank and
  becomes liquid, so that we can put it
  back in the circuit.
Bibliography
 energia-nuclear.net/
 es.wikipedia.org/wiki/Energía_nuclear
 http://www.inza.com/ainoa/nuclear2.swf
 http://energia-
 nuclear.net/es/como_funciona_la_energia_nuclear.ht
 ml

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Energia nuclear (2)

  • 1. Juan Luis García Martínez Carmen Gª-Calvo López Enrique Gª-Tenorio Corcuera 2ºC-D
  • 2. Nuclear energy  Nuclear energy is the energy released in nuclear reactions. However, we also refer to nuclear energy as the use of that energy for other purposes such as providing electrical, mechanical and thermal energy from nuclear reactions.
  • 3. What is nuclear energy?  Nuclear energy is a physical-chemical process in which a lot of energy is released(called nuclear energy). We will explain the process caused in nuclear reactions in which this nuclear energy is obtained.
  • 4. We analyze the two main methods of obtaining nuclear energy: Nuclear fission Nuclear fusion
  • 5. Nuclear fission  Nuclear fission is one of the two possible reactions that take place when we work with nuclear energy.  We called nuclear fission the division of the nucleus of an atom. The nucleus becomes many fragments with a mass almost equal to half the original mass plus two or three neutrons.
  • 6. Nuclear fusion A clear example is seen in  Nuclear fusion is a nuclear the solar energy that reaction in which two nuclei comes from the fusion of of light atoms combine to hydrogen form one heavier nuclei, generating helium nucleus, releasing a and releasing a large large amount of amount of energy. energy.
  • 7. Advantage Distribution of nuclear energy in Europe  A third of the energy Findlandia generated in Europe Bulgaria comes from nuclear Suiza Distribution energy, this implies that Armenia of nuclear Ucrania energy in emit 700 million tons of Europe Eslovaquia CO2 and other Francia contaminants generated 0 50 100 from burning fossil fuels.
  • 8. Advantage  Fossil fuels will be exhausted in a not too distant future. One of the great advantages of using nuclear energy is the relationship between the amount of fuel used and the energy obtained. Years  Here is a graphic which shows how Petrol much time Coal will non-renewable Uranium Years last. Coal 0 100 200 300
  • 9. Advantage  As an alternative to fossil fuels as carbon or oil, we would avoid the problem of so-called global warming. It will improve the quality of air we breathe.
  • 10. Disadvantages  The main disadvantage is that the responsibility falls on people. Irresponsible decisions can lead to accidents at nuclear plants.  One of the main problems is the generation of nuclear waste and the difficulty to manage as it takes many years to lose its radioactivity and dangerous.  Let’s see a real example of how irresponsible decisions can cause a disaster.
  • 11. The nuclear accident of Chernobyl.  On the 26th April 1986, the reactor number four of the nuclear plant of Chernobyl suffer the most nuclear accident of the history.  The consequences of the disaster affecting an area of ​nearly 5 million inhabitants, contaminating 23% of the surface of neighboring Belarus, parts of Russia and Ukraine and parts of Poland, Czech Republic and Germany.
  • 12. Disadvantages  Nuclear fusion is unfeasible because of the difficulty of heating the gas to such high temperatures and to maintain a sufficient number of cores for a time sufficient to obtain energy and retaining the gas is highly expensive.
  • 13. Important nuclear plants in Spain.  The most important are:  Sta. Mª de Garoña, Trillo, José Cabrera, Cofrentes, Ascó I-II, Almaraz I- II, Vandellós II.
  • 14. How does a nuclear plant works?  First, in the nuclear reactor, nuclear fission occurs. This reaction generates a lot of heat used to heat water. The water transformed into high-temperature steam, reaches the turbine which rotates. It transforms heat into kinetic energy. The turbine is connected to an electric generator which can transform kinetic energy into electric energy. The steam exits the turbine and, as it is still hot, it must be cool. Whe it leaves the turbine, it reaches a condensation tank and becomes liquid, so that we can put it back in the circuit.
  • 15. Bibliography  energia-nuclear.net/  es.wikipedia.org/wiki/Energía_nuclear  http://www.inza.com/ainoa/nuclear2.swf  http://energia- nuclear.net/es/como_funciona_la_energia_nuclear.ht ml