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What is energy stored for use at a later time?
In current nuclear power plants, nuclear energy is released when U235 undergoes fission. This energy is not stored, it is used as soon as it is released, to produce electricity.
What is being done to reverse nuclear power?
You can't reassemble the U235 nucleus after it has fissioned, so you can't put nuclear power into reverse.
Has Nuclear Energy changed over time?
Nuclear energy was first demonstrated by the Chicago Pile 1 in 1942, under Fermi, but this experiment did not produce any useful power. Power producing reactors were built in the US and UK in the mid '50s, and other countries have followed. Since then the principles of using heat generated by fission of U235 (mainly) to drive the normal type of steam turbines and produce electricity have stayed the same. Development has been largely to make plants more efficient and improve safety.
What is oralloy?
Oralloy is an acronym for "Oak Ridge Alloy". Which is an alloy of Uranium 235 and Uranium 238. The U235 is the fissile isotope that is used in fission type nuclear weapons. The actual concentration is classified, but generally U235 is greater than 90%.
What is fuel enrichment - nuclear?
Natural uranium contains approx 0.7 percent U235, the rest U238. The 235 is the useful fissile isotope. Some reactors using graphite or heavy water can use natural uranium, but light water reactors need to have the U235 proportion increased to about 4 percent. this is called enrichment.
What is energy stored for use at a later time?
In current nuclear power plants, nuclear energy is released when U235 undergoes fission. This energy is not stored, it is used as soon as it is released, to produce electricity.
What is the best way at producing electricity?
in order,- Fission, (u235) Fusion, (d-t) Fusion (sun) Antimatter, Zero point energy.
Is the uranium-235 isotope the most commonly used fuel in fission power plants?
Yes U235 is the fissionable isotope of Uranium. Natural Uranium contains only about 0.7 percent U235, which is enough to produce fission only with a good moderator such as graphite or heavy water. In light water reactors the Uranium has to be enriched to about 4 percent U 235.
What is the process of manufacture of nuclear energy?
Nuclear energy to produce electricity is obtained from nuclear reactors, which are assemblies of uranium rods surrounded by a moderator and which can be made to produce a chain reaction of fissioning of the active part of the uranium (U235), which produces heat. The heat output raises steam either in separate boiler units (PWR) or within the reactor pressure vessel (BWR), which is then used to drive a steam turbine/generator which operates similarly to one in a coal or gas fired plant.
How much coal gives same energy as 1kg of uranium fuel pellets?
I have a figure but this is for 1 kg of Uranium 235, normally reactor fuel is about 4 percent of this isotope, so the amount of coal would be divided by 25 if we are talking about uranium as used in PWR or BWR reactors. Also this figure is for complete use of the U235, whereas for practical reasons of maintaining reactor performance, fuel is unloaded and replaced before it is all used up. So bearing in mind the above, 1 kg of U235 will produce as much energy as 1500 tons of coal. Let's try: 1kg of U235 (3,75%) has 83,14 TJ/kg. 1J=1Ws (3600Ws=1Wh). 1TJ=1000GJ=1 mio MJ 1kg of coal has 6000Wh/kg. I get 3850tons.
What is being done to reverse nuclear power?
You can't reassemble the U235 nucleus after it has fissioned, so you can't put nuclear power into reverse.
Has Nuclear Energy changed over time?
Nuclear energy was first demonstrated by the Chicago Pile 1 in 1942, under Fermi, but this experiment did not produce any useful power. Power producing reactors were built in the US and UK in the mid '50s, and other countries have followed. Since then the principles of using heat generated by fission of U235 (mainly) to drive the normal type of steam turbines and produce electricity have stayed the same. Development has been largely to make plants more efficient and improve safety.
The concentration of U235 in the atomic bomb?
The references I have state Oralloy is 93.5% U235. Oralloy (Oak Ridge Alloy) was used in US Uranium atomic bombs as the fissile material. However they also say that any enrichment 20% U235 or higher is fissile and could be used to make a bomb, it would require a higher critical mass to work though. One source I have states that early Soviet Uranium atomic bombs used ~97% U235, but the US felt this level of enrichment to be unnecessary and excessively expensive.
How many neutrons are in Element 92?
Element number 92 is Uranium and there are two main isotopes - U235 and U238. In U235 there are 92 protons so there are 235 - 92 = 143 neutrons. In U238 there are thus 146 neutrons
Fuel consumption Nimitz aircraft carrier?
A Nimitz class CVN uses approximately the weight of a paper clip worth of U235 per day at an average underway power. I cannot disclose the weight of U235 upon initial fuel load due to it being classified, but It is not near as much as one would expect for the ship to run for 20-25 yrs.
What is oralloy?
Oralloy is an acronym for "Oak Ridge Alloy". Which is an alloy of Uranium 235 and Uranium 238. The U235 is the fissile isotope that is used in fission type nuclear weapons. The actual concentration is classified, but generally U235 is greater than 90%.
What is the difference between using uranium for power or bombs?
In power reactors the fuel is uranium enriched slightly to about 4 percent U235 (the fissile isotope), whereas for a bomb you need the U235 as high as possible, in the high 90's I believe.
