- Joined Jan 21, 2019
The cryogenic superconductor energy requirements for a fusion plant are not show stoppers using current technology but room temperature superconductors would be a huge improvement on the operational efficiency.We are due for new developments. Superconductors haven't sat still either. We are creeping toward a room temperature superconductor, that could happen anytime. If you don't count ridiculous conditions like extreme pressures, we are there already.
The 4.5 K is a typical low temp superconductor. That 100kW will cost about ~70 times that in electrical energy input.The ITER tokamak is a machine using superconducting magnets. The windings of these magnets will be subjected to high heat loads resulting from a combination of nuclear energy absorption and AC-losses. It is estimated that about 100 kW at 4.5 K are needed. The total cooling mass flow rate will be around 10 – 15 kg/s. In addition to the large cryogenic power required for the superconducting magnets cryogenic power is also needed for refrigerated radiation shield, various cryopumps, fuel processing and test beds. A general description of the overall layout and the envisaged refrigerator cycle, necessary cold pumps and ancillary equipment is given. The basic cryogenic layout for the ITER tokakmak design, as developed during the conceptual design phase and a short overview about existing tokamak designs using superconducting magnets is given.
That's where the term cold fusion, the hope that fusion reactions can occur at relatively low temperatures, comes in. Once a promising theoretical goal, the field was largely written off as pseudoscience the late 1980s, when electrochemists Stanley Pons and Martin Fleischmann reported that their room-temperature electrolysis experiment had produced so much excess heat—as well as nuclear by-products like tritium—that only a nuclear reaction could be blamed. The attention led to a massive wave of cold-fusion experimenting, but no one was able to replicate their heat anomalyWe are creeping toward a room temperature superconductor, that could happen anytime. If you don't count ridiculous conditions like extreme pressures, we are there already.
From the very start of the article offered by the OP:It's still a ways off but very interesting once we get this worked out...
Could anyone explain "more power than goes into it"?The world's first nuclear fusion plant has now reached 50 percent completion, the project's director-general announced Dec. 6.
When it is operational, the experimental fusion plant, called the International Thermonuclear Experimental Reactor (ITER), will circulate plasma in its core that is 10 times hotter than the sun, surrounded by magnets as cold as interstellar space.
Its goal? To fuse hydrogen atoms and generate 10 times more power than goes into it by the 2030s.
Ultimately, ITER is meant to prove that fusion power can be generated on a commercial scale and is sustainable, abundant, safe. and clean.
Agustín, you need to think like a physicist! Every physicist I've ever met thinks first about energy. Need to boil water, they'll calculate the energy needed to do it. Need to lift a piano to the third floor, again they'll answer how much energy it will take.Could anyone explain "more power than goes into it"?
https://en.wikipedia.org/wiki/Fusion_energy_gain_factor#Engineering_breakevenFrom the very start of the article offered by the OP:
Could anyone explain "more power than goes into it"?
The short answer is that the hydrogen to helium fusion reaction releases more energy and heat than it consumes.Could anyone explain "more power than goes into it"?
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by Jake Hertz