Follow the link and post there, it's the deep end of the gene pool.
http://www.eng-tips.com/threadminder.cfm?pid=403
also, google "peter rumsey/chilled slab". He's a leading chilled beam PE in the US. I've heard him speak on low energy topics, and while I don't agree with everything he says, he is actively doing the work you are interested in.
http://www.architechweb.com/ArticleD...5/Default.aspx