vansig
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vansigParticipantMaya,
ITER is a white elephant project designed to convince the world that fusion must be enormous, expensive, probably also dangerous, and always at least fifty years away.
while none of these is true, it looks like you’ve been propagandized.June 13, 2013 at 7:13 pm in reply to: volunteers needed to map out environmental, clean energy news sites #12718vansigParticipantso far, i see this:
https://www.solveforx.com/moonshots/white-house-fusion-petitionJune 12, 2013 at 2:55 am in reply to: volunteers needed to map out environmental, clean energy news sites #12714vansigParticipantokay, so today is June 11. what’s the news?
June 7, 2013 at 8:48 pm in reply to: Integrating fusion power into the present electrical grid #12713vansigParticipantannodomini2 wrote: If the pulse rate can be efficiently varied, it may even be able to load balance at the generation point.
it may be somewhat variable, but there are constraints: firstly, on waste heat dissipation, which tends to reduce the pulse rate; and on efficiency, since the gases in the chamber will remain ionized only for short intervals (at most 1 ms), and re-heating them costs energy, so this tends to increase the pulse rate.
lots of our back-of-the-envelope calculations assumed a rate that was divisible by both 50 and 60 Hz, to accommodate both north american and European systems;
consequently you will see the number 3000 pulses/second tossed around in the forums. but any number > 1000 that’s divisible by 300 would meet all these criteria.
so, 1200, 1500, 1800, 2100, … etc with upper bound fixed by heat dissipation.June 6, 2013 at 7:29 pm in reply to: Integrating fusion power into the present electrical grid #12711vansigParticipantnakile,
a properly designed grid would assure multiple redundancy and nominal load of no more than about 1/3 of the maximum capacity. in such a fail-safe design, when a link fails, power would get routed around the bad spot.but the North American system isn’t really a power grid. it is an ad-hoc collection of separate companies, that trade power with each other. no one is in charge of assuring that nominal load never gets above 50%. so cascading failures can occur, like the northeastern blackout of 2003.
June 1, 2013 at 10:05 pm in reply to: volunteers needed to map out environmental, clean energy news sites #12704vansigParticipantPinterest is a site that already crowd-sources this kind of info, by topic.
http://pinterest.com/sczumbiel/alternative-energy/
http://pinterest.com/climatecentral/alternative-renewable-energy/
http://pinterest.com/mncee/
http://pinterest.com/greenandglobal/
http://pinterest.com/indianachamber/energy-environment/May 23, 2013 at 7:01 pm in reply to: Integrating fusion power into the present electrical grid #12687vansigParticipantPatientman wrote: How do you tap into the system without a distribution station nearby?
various parts of the system normally act like a vibrating spring, with low loss; adding power converts this circumstance into negative loss.
so really,
you tap in at any place that can handle a negative loss of 5 MW.vansigParticipantwhen a failure occurs, the web site returns me to the Post Reply page, with empty text in the Message textarea.
it is certainly sporadic, because i was able to edit a reply once, but not twice, just now.
vansigParticipantit failed again, today, on my first try replying, above. i had pressed the QUOTE button to compose the message;
fortunately i copied the whole text to the clip board before submitting the post so i was able to submit the posting
after retrying with the POST REPLY button.FAST REPLY also broke.
i’m sitting at toronto public library, parkdale branch, on their wifi. external world sees my ip address as 64.26.155.132
vansigParticipantBreakable wrote: Vansig:
I assume you are talking about this post:
https://focusfusion.org/index.php/forums/viewreply/11206/
Just want to narrow it down time wise. It shows like 17:22 PM Toronto time?
Please share your ISP if its not confidential.yes, that’s the successful posting, made a few minutes after the failure,
but no that isnt the accurate local time.the workaround was, that I logged out of the web site and logged in again,
posted again and succeeded.but i am not certain that action had anything real to do with mitigating the problem,
since it failed again for me a few minutes later, when following up here.local time now is 12:42pm.
vansigParticipantok, this is happening again, to me, today, though i managed to get one posted by re-trying.
vansigParticipantHowever, silver has high electrical and thermal conductivity. how to balance this?
May 21, 2013 at 12:03 am in reply to: Integrating fusion power into the present electrical grid #12663vansigParticipantunlike traditional nuclear, which runs the plant continuously, focus fusion will consist of an array of small reactors, which could be switched on or off based on needed load.
vansigParticipantsame here. it’s sporadic. but i think when it’s happening, that even the contact_us link is broken
vansigParticipantit seems that i have been working with assumptions belonging to the lumped element model, and that since the rogowski coil is operating at sizes where a single turn is on the same order as a wavelength, only a fully electromagnetic model will suffice. so please treat my above remarks as early guesses, and there is still much engineering to do.
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