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Fusion Technology: The Energy Power

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Fusion power is the generation of energy by nuclear fusion. Fusion reactions are high energy reactions in which two lighteratomic nuclei fuse to form a heavier nucleus. When they combine, some of the mass is lost. This is converted into energy through E = mc2 Fusion power is a research effort to try and harness this energy to power large scale cleaner energy. It is also a major part of plasma physics research. – PowerPoint PPT presentation

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Title: Fusion Technology: The Energy Power


1
Fusion Technology The Energy Power
2
Introduction
  • Fusion power is the generation of energy by
    nuclear fusion. Fusion reactions are high energy
    reactions in which two lighteratomic nuclei fuse
    to form a heavier nucleus. When they combine,
    some of the mass is lost.
  • This is converted into energy through E mc2
    Fusion power is a research effort to try and
    harness this energy to power large scale cleaner
    energy. It is also a major part of plasma physics
    research.

3
  • In large scale commercial proposals, heat from
    the fusion reaction is used to operate a steam
    turbine that drives electrical generators, as in
    existing fossil fuel and nuclear fission power
    stations.

4
  • How Fusion Technology works?
  • In a fusion reaction, energy is released when two
    light atomic nuclei are fused together to form
    one heavier atom. This is the process that
    provides the energy powering the Sun and other
    stars, where hydrogen nuclei are combined to form
    helium.

5
  • To achieve high enough fusion reaction rates to
    make fusion useful as an energy source, the fuel
    (two types of hydrogen-deuterium and tritium)
    must be heated to temperatures over 100 million
    degrees Celsius. At these temperatures the fuel
    becomes a plasma.
  • This incredibly hot plasma is also extremely thin
    and fragile, a million times less dense than air.
    To keep the plasma from being contaminated and
    cooled by contact with material surfaces it is
    contained in a magnetic confinement system.

6
The Need for Fusion Technology
  • Energy supplies are an essential requirement for
    economic growth and enhancement of life
    standards. To sustain and increase the present
    rate of world energy use, according to
    expectations for this century,
  • There are Three large Energy
  • 1.Solar Energy.
  • 2.Fission with Breeding.
  • 3.Fusion.

7
  • Benefits of Fusion Technology
  • Benefits
  • No Carbon Emissions
  • The only by-products of fusion reactions are
    small amounts of helium, which is an inert gas
    that will not add to atmospheric pollution.
  • Abundant Fuels
  • Deuterium can be extracted from water and tritium
    is produced from lithium, which is found in the
    earth's crust. Fuel supplies will therefore last
    for millions of years.

8
  • Energy Efficiency
  • One kilogram of fusion fuel can provide the same
    amount of energy as 10 million kilograms of
    fossil fuel.
  • No long-lived Radioactive Waste
  • Only plant components become radioactive and
    these will be safe to recycle or dispose of
    conventionally within 100 years.

9
  • Safety
  • The small amounts of fuel used in fusion devices
    (about the weight of a postage stamp at any one
    time) means that a large-scale nuclear accident
    is not possible.
  • Reliable Power
  • Fusion power plants should provide a baseload
    supply of large amounts of electricity, at costs
    that are estimated to be broadly similar to other
    energy sources.

10
Advantages of Fusion Technology
  • Clean energy. No greenhouse gases.
  • Virtually limitless fuel available. (The
    deuterium can be distilled from seawater and the
    tritium can be bred in the reactor.)
  • No chain reaction. Easier to control or stop than
    fission.
  • Very low fuel cost.

11
Disadvantages of FusionTechnology
  • Unproven at anything resembling commercial scale.
  • Could produce a net negative amount of energy.
  • If cold fusion could be achieved, it would be
    much easier to implement.

12
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