Forum Klix.ba

Njemačka će danas pokušati ući u historiju kao prva država na čijoj je teritoriji upaljen prvi eksperimentalni fuzijski reaktor.

Riječ je o reaktoru Wendelstein 7-X u koji će danas biti ubrizgan čisti vodik koji bi se potom ubrzo trebao pretvoriti u održivu i vrelu plazmu. Paljenje možete pratiti uživo od 14:45 sati, a sam čin ubrizgavanja planiran je za 15:35 sati po našem vremenu.

Fuzijski reaktor je mašina koja kopira radikalne uslove u unutrašnjosti zvijezda koje upravo pomoću nuklearne fuzije kreiraju svoju energiju. Reaktor će upaliti njemačka kancelarka Angela Merkel koja je i sama doktor fizike.

Iako je funkcionalni fuzijski reaktor od nas udaljen još nekoliko desetaka godina istraživanja i usavršavanja, ovaj ekperiment predstavlja značajan korak ka ostvarenju cilja – kreiranje kontrolisane nuklearne fuzije, dugotrajnog izvora energije koji će revolucionalizirati svijet.

Nuklearna fuzija je proces spajanja više atomskih jezgri, pri čemu nastaje teža atomska jezgra, a sve je popraćeno snažnim oslobađanjem energije.

Ljudi su zasad uspjeli kopirati nestabilni oblik fuzije koji se koristi pri detoniranju modernih nuklearnih, odnosno hidrogenskih bombi.

Iza Horizonta wrote:sjetim se babe vange i onog proročanstva o umjetnom suncu

sinuhe wrote:Nestabilnost uzrokuje magnetno polje te plazme koju kontrolisu vanjskim magnetnim poljem.
Vjerovatno problem koji se ne moze prevazici inzinjeringom i dzaba pare bacaju kad u 60 godina nema napretka a i u ITER su ulozili mnogo vise od planiranog.

sinuhe wrote:Nestabilnost uzrokuje magnetno polje te plazme koju kontrolisu vanjskim magnetnim poljem.
Vjerovatno problem koji se ne moze prevazici inzinjeringom i dzaba pare bacaju kad u 60 godina nema napretka a i u ITER su ulozili mnogo vise od planiranog.

Best case scenario: the reactor is destroyed but the gas is contained by some secondary containment vessel so the tritium leak doesn't happen, and the gas can be collected and processed properly. Anyway, even in worst case scenario I can imagine for a fusion reactor failure is still a million times less dangerous than fission reactor meltdown.

Furthermore, since fusion stops as soon as the containment vessel or its magnetic coils are disrupted, it is unlikely that all of that energy would be released. And the "unburned" fuel reverts to ordinary hydrogen - effectively harmless in this case.

How much power is needed to start the reactor and to keep it working?

JET consumes large amounts of power – for fusion to occur we need to create and maintain plasma at extremely high temperatures. Additionally we need to contain the plasma by energising large magnetic coils. In total, when JET runs, it consumes 700 – 800 MW of electrical power (the equivalent of 1-2% of the UK’s total electricity usage!).

Producing pulses
Future reactors will use superconducting magnetic coils, which are much more efficient, so they will not expect to use so much power – maybe 200-300 MW of electrical power. They will produce 1-2GW (1000 – 2000 MW) of electricity, whereas JET does not have the set up to harvest any energy produced, as it is not a power reactor, but an experiment.

In a future power plant, it is envisaged that the heat from a fusion power plant would generate electricity in just the same way as existing power plants, in which the heat is used to raise steam, driving turbines. The possibility of using the plasma energy more directly has been considered but does not seem practical.

sema911s wrote:Sto bi se reklo bez uglja nista...


Tnx mate...