From: quibbler247@yahoo.com   
      
   In article ,   
   damon16ONE@attbi.dotcomma.retro.com says...   
   > henry@spsystems.net (Henry Spencer) wrote in   
   > news:Hsy7tn.916@spsystems.net:   
   >   
   > > In article   
   > > <3cbfb824.0402110953.131609d2@posting.google.com>, Asherian   
   > >  wrote:   
   > >>Does anybody know whether Project Prometheus is going to   
   > >>use a turbine-driven generator or an MHD?   
   > >   
   > > Nobody's made any decisions at that level of detail.  It   
   > > might well do something like thermionic conversion.   
   >   
   > How would thermionic conversion work?  I keep imagining   
   > a big vacuum tube triode set up as an oscillator...   
   > The cathode being directly heated by the reactor.   
      
   The thermionic device also needs to be able to dissipate the waste heat,   
   so they probably won't want to heat it directly with the core.  They will   
   conduct heat to it and then have a system that efficiently radiates away   
   the excess.   
      
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