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https://www.iter.org/sci/MakingitWork https://www.iter.org/sci/MakingitWork: “The helium nucleus carries an electric charge which will be subject to the magnet
by Someone 4y ago
https://www.iter.org/sci/MakingitWork https://www.iter.org/sci/MakingitWork:
“The helium nucleus carries an electric charge which will be subject to the magnetic fields of the tokamak and remain confined within the plasma, contributing to its continued heating. However, approximately 80 percent of the energy produced is carried away from the plasma by the neutron which has no electrical charge and is therefore unaffected by magnetic fields. The neutrons will be absorbed by the surrounding walls of the tokamak, where their kinetic energy will be transferred to the walls as heat.
In ITER, this heat will be captured by cooling water circulating in the vessel walls and eventually dispersed through cooling towers. In the type of fusion power plant envisaged for the second half of this century, the heat will be used to produce steam and—by way of turbines and alternators—electricity.”
That’s about ITER, but the two devices do not differ in this.
- dathinab 4y agoMakes me wonder if given the increasing value of water this has to change a bit (for reactors not close to shore). I.e. instead of letting the steam escape into the air after going through a turbine using some mechanism to passively cool/condense it "somehow", reusing _all_ coolant water, only having closed loop(s) (the "inner" cooling loop is often closed anyway for various reasons transferring the heat to an outer loop before its used for anything).
- ncmncm 4y agoThere is no expectation that the steam would be released. That would be terribly wasteful, and it is not done in existing plants, whether coal or nuke-fired.