Dr Jan Kosny, Fraunhofer Center for Sustainable Energy Systems in Cambridge, Massachusetts, talks about PCMs

Dr Jan Kosny of the Fraunhofer Center for Sustainable Energy Systems in Cambridge, Massachusetts USA, has been researching Phase Change Materials (PCMs) for 30 years. Only recently have PCM-enhanced building materials been considered as an option for new buildings as well as for retro-fits. PCMs maximise insulation effectiveness and maintain low heating and cooling loads.  Dr Kosny's laboratory and field tests done on thermal performance showed reductions in heat flow of about 30% due to the presence of approximately 20 wt % PCM in the insulation.

http://cse.fraunhofer.org/events/pcm-workshop-buildings-xi/
http://www.newscientist.com/article/mg21328466.100-buildings-and-clothes...
http://www.ornl.gov/sci/buildings/2010/Workshop%20Bio/Workshop%202%20bio...
http://www.cleantechnotes.org/2012/01/kosny-explains-phase-change-materi...
http://www.phasechange.com/documents/NIBS.pdf
http://bt.mit.edu/?p=279