Lerner wrote: I assume you are talking about liquid lithium? It’s a possiblity if helium turns out to be inadequate as a coolant, but it is very corrosive and I would think any lithium colling system will cost a lot more than a helium system.
Sorry for not giving you the web reference right off. Here it is
http://en.wikipedia.org/wiki/Heat_pipe
Also see
http://www.cheresources.com/htpipes.shtml
