completing the puzzle: is fusion energy coming of...
TRANSCRIPT
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first light fusion ltd
Completing the Puzzle: Is Fusion Energy
Coming of Age?
Cleantech Forum Europe 2017
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first light fusion ltd
Key points
• With complexity comes opportunity
• Literature from 1970s is full of possibilities, from 1990s it’s all about two machines
• There has been a fundamental change in computational power
• Trinity of experimental-theoretical-numerical
• Start ups are changing the possible timescales
• This wouldn’t be possible without 50 years of mainstream research
• How, again simulation capability
• Plants don’t have to be GW scale
• Fusion is not the same as fission
• No high-level waste
• No meltdown risk
• No weapons grade material
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Physics of fusionHow do you get energy gain in the first place?
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FUSION ENERGY
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MAGNETIC FUSIONJET (UK)
ITER (France)
Steady state
INERTIAL FUSIONNational Ignition Facility – LLNL (USA)
Implosion
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So why don’t we have gain?The problem is stability
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$180 bn
NOLONG LIVED
WASTE
NOWEAPON
MATERIALS
NOMELTDOWN
RISK
Source: http://www.bbc.com/news/world-asia-38131248
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first light fusion ltd
Engineering of a fusion plantHow do you capture the energy?
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DriverTarget
Design
Target
Manufacture
Tritium
Handling Blanket
Target
Delivery
Target Chamber
Exhaust
• Heat exchanger
• Turbine
• Recirculation of driver energy
• Connection to grid
• and so on …
The Reactor
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first light fusion ltd
There are some fusion specific engineering challenges, but solutions exist
• Tritium breeding
• Every neutron needs to produce one tritium
• Reaction with Be then Li produces tritium and He
• Many proposed solutions, no one can test then yet
• Solid angle is crucial
• Material science
• Neutron damage
• Heat flux (very difficult for MCF, 50 MW/m2; re-entry is ~2 MW/m2)
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first light fusion ltd
Plant scale
• Fusion requires confinement time, which can be rewritten as a
length scale
• Bigger is easier
• As nameplate capacity increases, the engineering gets harder; as nameplate
capacity decreases the fusion physics gets harder
• Capital cost vs. levelised cost
• Mainstream projects are 1+ GW
• DEMO would be 2-4 GW
• Start ups are looking as low as 50 MW
• Although, some start ups don’t have very good answers for “how?”
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First Light’s proposalExquisite understanding of target physics, brutally simple driver
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Tritium
Handling Blanket
Target Chamber
Exhaust
• Heat exchanger
• Turbine
• Recirculation of driver energy
• Connection to grid
• and so on …
Core Technology
DriverTarget
Design
Target
Manufacture
Target
Delivery
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The physics challenge
• First Light’s target designs work with instability
• Inspired by a natural phenomenon, genuinely new method for plasma
formation
• The company started with a world-class simulation capability
• We design with the full complexity of the real world
• “Advanced target design” workstream is very important
• These designs have unlocked a low cost projectile driver
• Electromagnetic launch of a projectile can be 50% efficient
• At least 10x cheaper than the mainstream
• Substantially simpler target interaction physics
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first light fusion ltd
The engineering challenge
• Tritium cycle challenge
• Solid angle available could be 99%
• Material science challenge
• Projectile driver unlocks size as the lever to reduces the heat load
• Projectile driver unlocks liquid first wall
• No influence of first wall on plasma
• Liquid first wall can catch the projectile and recycle material
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Reactor concept
• We believe that the most likely FOAK seeks to minimise capital cost
not levelised cost
• Higher energy, lower repetition rate
• Simultaneously addressing physics and engineering difficulty
• Unlocked by cheaper driver technology
• We believe in the value of flexibility
• Higher energy, lower repetition rate means you can turn it up later
• Improvements in target design will feedthrough immediately
• Add a second turbine later
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Fusion and the energy landscapeIf the FOAK turns on in 2035, will we need it?
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Inertial fusion can provide flexible baseload
• Centralised generation
• By Clayton Christensen’s definitions, fusion is a “revolutionary sustaining
technology”
• Flexible baseload is likely to be gas, this is what fusion is competing with …
• … unless fusion can directly compete on price
• Timeliness
• First Light believes there will be opportunity for fusion for a long time …
• .. but the opportunity will diminish
• Increased rate of learning
• I believe there will be more than one fusion technology
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A FOAK needs a supportive environment
• The social and political environment is also important
• Fusion is not fission, but it is the regulator who will decide
• Government support is very likely to be essential
• Public opinion could have a significant influence
• First Light has a proactive strategy
• We believe early engagement can ensure these points are not blocks
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Panel Discussion20 min: panel
20 min: open questions
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