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Prometheus
WhatWouldanArtificialSunBeLike?
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ChallengeforEverydayUseEnergy
FusionresearchtowardstheartificialSunwillcontinuetochallengetheplasmadurationof300secondsinthefuture.
300 seconds is the minimum duration that fusion energy must be achieved in order to be commercialized. If plasma
duration is maintained for 300 seconds, the fusion power plant can be operated 24 hours a day, 365 days a year. The
current level of research is in the fusion reactor phase. If KSTAR and other small and medium-sized fusion reactors
areverifiedbyalargefusionreactor,ITER,andthepossibilityofcommercializationoffusionenergyisverified,they
willmoveontotheDEMOnstration(DEMO)stage.Ultimately,thedevelopmentoffusionpowercanbecompletedby
succeedinginafusionpowerplantthatcanproducestablepower.
KSTAR,whichsettherecordof30secondsforthefirsttime,recentlycameupwithanewmethodof“FIREmode”
toobtain100milliondegreesofultra-hightemperatureplasma,whichwasdiscoveredwithteamNaYong-su,Nuclear
Engineering research team at Seoul National University. Compared to the H-mode, more stable operation is possible.
InaninterviewwiththeKoreaLecturerNews,ProfessorNasaid,“ItisacasethatshowsthatKorea’sfusionresearch
can be carried out in a more creative way than before by analyzing the results of the failed experiment,” expressing
expectationsforthenewmethod.Thekeytofusionresearchwashowtomaintainhigh-temperatureplasmaforalong
time.ThroughFIREmode,KSTARresearchcanmoveclosertothestageoffusioncommercialization.
With the successful operation of a fusion power plant, fusion energy can be commercialized like other conventional
energygenerationmethods.HwangYong-seok,ProfessorofNuclearEngineeringatSeoulNationalUniversity,said,“If
fusionenergyiscommercialized,itwillbeoperatedintheformofpowerplantslikethermalandnuclearpowerplants
andcanbesoldaselectricity.Thewayweturntheenergyfromthefusionintosteam,turntheturbinegenerator,*make
electricity, and send it to the user will be the same,” speculating about after fusion energy is commercialized. Fusion
energy,likecurrentfossilfuelsandnuclearpower,isexpectedtobeanewtypeofexportforthecountry.
*Turbine generator: A device that generates power directly by the combination of a generator and a turbine. Turbine rotates and generates electricity using
energyproducedthroughhydroelectricpower,nuclearpower,fossilfuels,etc.
NewCleanBaseloadPower
Fusion power plants have the potential to establish themselves as national baseload power in the future. Baseload
electricity is a steadily produced electric energy that is the basis of daily life. Nuclear energy was the new baseload
power of countries that wanted to reduce fossil fuel use, mainly in developed countries. This is because despite the
radiationproblem,itisthebestwaytosupplymorepowerthanfossilfuelgenerationregardlessofweatherandwithout
emittinggreenhousegasses.However,futureenergysourcesmustmeettherequirementsofenvironmentalfriendliness,
sourcesafety,resourceinfinity,andsocialacceptability.Fusionenergycanbeusedasaneco-friendlyenergysourcein
thatitmeetsalloftherequirementsofthe21stcentury.ProfessorLeesaid,“Thefusionpower,basedonunitmassemits
aboutfourtimesmoreenergythanfission,consumeslessfuelwhenoperatingpowerplantsofthesamesize,andthere
is no risk of explosion. In addition, while other renewable energy has many constraints due to environmental factors,
fusionenergyhasfewconstraintsonthosefactors.So,iffusionenergyiscommercialized,itwillgrowtoastagewhere
itcanberesponsiblefornationalbaseloadelectricity.”
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