Generating electricity from fusion

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    Electricity Fusion
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Discussion Overview

The discussion revolves around the methods of generating electricity from nuclear fusion, comparing it to nuclear fission. Participants explore various designs and concepts related to the use of heat and working fluids in fusion reactors.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant inquires about the process of using energy from nuclear fusion to generate electricity, drawing parallels to nuclear fission where heat is used to drive a turbine.
  • Another participant suggests that the cooling fluid in fusion reactors could serve as the working fluid, though they express uncertainty about the radiological and chemical implications.
  • A different participant raises concerns about the feasibility of using high-temperature fusion energy to heat a fluid, questioning the material limits of the containment structures.
  • One participant recalls a concept involving a lithium blanket surrounding the reactor, which could absorb neutrons and serve as a coolant, potentially producing steam for turbines.

Areas of Agreement / Disagreement

Participants express various ideas and concerns regarding the methods of electricity generation from fusion, indicating that multiple competing views remain and the discussion is unresolved.

Contextual Notes

There are limitations regarding assumptions about material properties at high temperatures, the specifics of direct conversion methods, and the implications of using lithium as a coolant and neutron absorber.

RandomGuy88
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How is the energy released from nuclear fusion used to generate electricity? From my understanding heat is generated during nuclear fission and this heat is used to heat a fluid and drive a turbine. So how does it work with nuclear fusion?
 
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The proposed design is to have the cooling fluid for the walls of the reactor be the working fluid. I'm not sure of what the radiological and chemical implications are, but things should look similar to other power plants on the secondary side.

I believe there has also been discussion of "direct conversion" because you end up with a charged particle with more energy. I haven't read enough on how it works to give a confident answer though.
 
The first thing I thought of was to just use the energy to heat a fluid but I was wondering if this is really feasible. In order for fusion to occur the temperature is so high I assume that it could not be used to heat a fluid because the material holding the fluid couldn't handle it.
 
I think I remember reading somewhere that one idea is to surround the reactor with a lithium blanket. The lithium would not only absorb the neutron from the fusion reaction (producing more tritium fuel), but also act as the coolant where heated lithium would be sent through a heat exchanger/steam generator producing steam for the turbine etc etc.
 

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