Breeder reactors = Virtually limitless energy?

In summary, it is estimated that the uranium available in the world would last for about 200-1000 years if used in breeder reactors.
  • #1
Jikx
207
0
Apparently "useable" uranium from ores is a somewhat small proportion, and using "breeder reactors" are able to utilize unseable uranium as fuel while producing more usable material.

But exactly how much? Say all useable uranium will be used up in 100 years, if we used breeder reactors, how much would this be extended by? 200 years? 1000 years? By so much we don't have to worry before the next ice age?
 
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  • #2
How long will uranium last — Garwin's calculations

Sometimes the breeder-enabled uranium extension figure used is 50x. Richard Garwin has used the figure 200x.
http://groups-beta.google.com/group...+garwin+breeder&rnum=5&hl=en#baf44b5dae522945

--
The 1600 quads of uranium-235 correspond to some 3 million tons of
natural uranium, of which 0.5% (i.e. about 1 part in 200) can be
consumed by light-water reactors as low-enriched uranium — although
uranium-235 constitutes 0.71% of natural uranium, the "tails" or
rejects from the enrichment process still contain 0.2% to 0.3%
uranium-235. The uranium-238, which could be burned to near-100%
exhaustion by recycle in fast-neutron breeder rectors, corresponds to
200x1600, or 320,000 quads.
--



useable uranium
It is sometimes called economically-extractable uranium.



By so much we don't have to worry before the next ice age?
We presently are in the midst of an Ice Age.
http://personals.galaxyinternet.net/tunga/

--
the Earth remains within the Great Pleistocene Ice Age (the next ~ 1-2 million years)
--


Regarding how long economically-exploitable uranium will last, from the above googlegroups link:

--
The seawater uranium resource of 4.5 billion tons is equal to fifteen
hundred times the 3 million tons of assured terrestrial reserve; it
thus corresponds to some 2.4 million quads if exploited in light-water
reactors burning uranium-235 and to 480 million quads if burned in
breeder reactors. If the population of the world doubles, and if
everyone uses electrical energy at the same rate as to U.S. residents
now, the primary energy needed for all electricity would be some 1300
quad per year as compared with the present 106 quad per year; half the
total resource of seawater uranium, if used in pressurized-water
reactors, would supply this greatly expanded energy need for 900 years
— and if used in breeder reactors the seawater uranium would suffice
for 200,000 years.
--
 
Last edited by a moderator:
  • #3
It's difficult to give an exact answer as it depends on several factors such as the efficiency of the breeder reactors and the rate of consumption. However, it is estimated that breeder reactors could extend the use of uranium as a fuel source by several hundred years, possibly even up to a thousand years. This would definitely buy us more time before having to worry about depleting our uranium resources. However, it's important to also consider alternative energy sources and conservation efforts to further extend the use of all our resources.
 

1. How do breeder reactors produce energy?

Breeder reactors produce energy through a process called nuclear fission. This involves splitting atoms of a radioactive material, such as uranium, which releases a large amount of heat. This heat is then used to generate steam and turn turbines, which ultimately produces electricity.

2. What makes breeder reactors a source of virtually limitless energy?

Breeder reactors have the ability to produce more fuel than they consume. This means that they can continuously generate energy without needing to be refueled. Additionally, breeder reactors can use a wider range of nuclear fuels than traditional reactors, making them a more sustainable source of energy.

3. Are there any risks associated with breeder reactors?

Like any form of nuclear energy, there are risks associated with breeder reactors. These include the potential for accidents and the production of radioactive waste. However, with proper safety measures and waste management protocols in place, these risks can be minimized.

4. How do breeder reactors compare to other sources of energy in terms of cost?

Currently, breeder reactors are not as cost-effective as other sources of energy, such as fossil fuels or renewable energy. However, as technology advances and more breeder reactors are built, the cost of producing energy from them is expected to decrease. Additionally, the long-term benefits of using breeder reactors, such as reducing carbon emissions and dependence on non-renewable resources, may outweigh the initial cost.

5. What are the potential environmental benefits of using breeder reactors?

Breeder reactors have the potential to significantly reduce carbon emissions, as they do not rely on fossil fuels for energy production. They also have a smaller environmental footprint compared to traditional nuclear reactors, as they produce less nuclear waste and can use recycled nuclear fuel. Additionally, the use of breeder reactors could reduce the need for mining and processing of uranium, which can have negative impacts on the environment.

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