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HELLO!

THIS IS OUR (Laura, n´Queralt)  PROJECT

THIS BLOG IT´S ABOUT NUCLEAR ENERGY , I HOPE YOU LIKE IT !

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Advantages: 

Greenhouse gases are not produced

Oil dependence is reduced

It damages the environment less




           



  Problems:  

• Effects on human health

• Security concers 

• Cause cancer, malformation in fetuses

• Generate radioactive radiation that is energetic and can alter genetic information

        INFORMATION

• It´s the energy that has neutrons and protons together

• When these links are modified, a large amount of thermal energy is released in the form of heat.

• Nuclear energy is the energy that holds neutrons and protons together. ... Nuclear power plants use nuclear fission to produce electricity.

    


WORD FOR MORE INFORMATION ABOUT NUCLEAR ENERGY  






 THE INVENTORS OF THIS ENERGY :

The inventors of nuclear energy were: Lise Meitner y Otto Frisch.

The nuclear energy borned in:

MORE INFORMATION 2

THE DANGERS OF NUCLEAR ENERGY

>> Now a days the nuclear energy has a lot of dangers, that  now doesn't have a quick solutions.

>> These dangers can be a big problem if break free in the atmosphere and can produce the death.

>> Nuclear power stations have a lot of security to avoid these accidents, but sometimes aren't enought( like Chernobyl), because they try to save money and put a minimmum of security.

>> But the most important dangers are: The RADIATION and THE RISK OF A NUCLEAR EXPLOSION. 

>> The radiation it's a property that some elements that you can found in the nature and can or can't be radioactive and the man has always been exposed.

 

CHERNOBYL

On April 26, 1986, the most serious nuclear accident in history took place in Chernobyl. An explosion occurred in reactor 4 during a routine safety test that caused about 30 deaths.

There were human errors that caused 200 tons of radioactive material at an altitude of up to 1,500 meters to expand. The most affected city was Pripyat, where the workers lived. The Soviet authorities didn't inform to the 50,000 habitants of the city at the time of the disaster and they didn't provide assistance against radiation.

The generated radioactive cloud spread over Europe due to the wind, polluting Belarus, Poland, Czechoslovakia and Ukraine to a greater extent. It is difficult to determine the exact figures of all people affected by the diseases resulting from the accident. Most of the radioactive material is today buried under the ground.

The contaminated area was isolated within a 30-kilometer radius and work continues to eliminate the remains. Entry into the area is prohibited, except for former residents. There are about 100 people who live there at their own risk.

ENTRY 1: INFORMATION

Energy's name :  NUCLEAR ENERGY      

Example : 

The centrals nuclear´s energy  , the atomic bomb , Ships and submarines with nuclear propulsion.                          


Picture :



 




Primary or secondary energy :      

• Nuclear energy is primary       

Renewable or not renewable :                         

• Nuclear energy is not renewable

Traditional or alternative energy:            

• Nuclear energy is a traditional energy. 

Brief definition:

Nuclear Energy is the energy that is realased artificially , in nuclar reaction. There are 2 prinicipal method for obtaining the nuclear energy : the fission and fusion nuclear.


                             

SECOND ENTRY: GLOBAL INFORMATION

     

HOW DOES IT WORKS ?







All starts in the nuclear reactor there carry out uranium fission, that makes a lot of energy.
This energy warm out water that spread to the vapour generator.


One of the first uses that is given to nuclear energy is that of electric power generation. But what is nuclear energy, is the internal energy contained in the nucleus of an atom. This energy can be expelled in the form of calorific energy: fission or fusion. 

Worldwide, 90% of nuclear power reactors, that is, reactors destined for the production of electric energy are light water reactors (in the versions of pressurized water or boiling water). In nuclear engineering, light water is called running water


To operate a nuclear power plant, a wide variety of types of nuclear reactors are available. However, all types of nuclear reactors have the same objective: to use heat from nuclear fission reactions to drive the turbines that will generate electricity.

The basic principle of the operation of a nuclear power plant with a pressurized water reactor can be simplified in these 4 steps:

1. Obtaining thermal energy by nuclear fission of the nucleus of atoms

2. Generate water vapor using the thermal energy previously obtained in the heat generator.

3. Actuate a set of turbines using the steam obtained.

4. Use the mechanical energy of the turbines to drive an electric generator. This electric generator will generate electricity.