Energy From Thorium Discussion Forum

It is currently May 26, 2017 9:31 pm

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 4 posts ] 
Author Message
PostPosted: Mar 07, 2017 2:36 am 
Offline

Joined: Feb 25, 2011 1:55 am
Posts: 71
https://www.u-battery.com/

From the UK and friends...

TRISO fueled, graphite moderated
Helium primary coolant
Nitrogen secondary to aeroderivative turbine for power, plus 710C process heat.
10MWth/4MWe per reactor in paired units.

Claim no cooling water, but that nitrogen compressor precooler looks suspiciously like a water final heat dump

Working the low end of the SMR marketplace, or going all in for multi-unit facilities with factory production?


Top
 Profile  
 
PostPosted: Mar 07, 2017 3:28 pm 
Offline

Joined: Feb 28, 2011 10:10 am
Posts: 328
The U-Battery is very similar to the Chinese HTR-10 or the X-energy reactor. The only real difference seems to be the power conversion system, which is He-N2 based.

The He-N2 turbine is said to be relatively close to an air turbine, but has such a turbine ever been developed, with a working prototype and such ?


Top
 Profile  
 
PostPosted: Mar 08, 2017 3:50 am 
Offline

Joined: Feb 25, 2011 1:55 am
Posts: 71
Rod Adams was a proponent of closed cycle direct nitrogen cooled reactors using nitrogen turbines (which almost by definition are aero-derivative). I suppose that might be one of the more recent activities.

http://www.atomicengines.com/

But he didn't build actual nitrogen turbines, though turbine industry folks mostly agree that a frame-F gas turbine derivative would be fairly feasible without huge R&D, as air is mostly nitrogen. Close analogues would be any indirect fired turbine setup (wherever you use really dirty fuel you can't send through a gas turbine combustor directly).


Top
 Profile  
 
PostPosted: Mar 08, 2017 7:30 am 
Offline

Joined: Apr 19, 2008 1:06 am
Posts: 2192
Pebbles are a good melt proof fuel.
With out of box thinking, two interesting possibilities occur to me.
We could have the pebble bed getting critical only on filling water coolant cum moderator. It could be a more capital economic reactor with higher fuel cost. It would become non-critical if the water runs low.
We could also salvage heat of hotter components of used fuel (leaching out the alkali metals and alkaline earths) and have decay fuel like the RTG's. This could do the job considered for low power reactors.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group