Heat to electricity via osmosis

http://dailyfusion.net/2013/05/start-up-will-be-converting-waste-heat-into-electricity-through-osmosis-8932/

This startup company claims to convert heat to electricity through osmosis. They claim this can be done with fairly low amounts of heat. They're brand new, so there's very little I found about how the process works or the expected cost if they're successful.

If anyone wants to explain the process they're using, that would be great. It seemed like they're using heat to keep two liquids imbalanced on each side of a membrane. I don't understand it and would like to know more from someone who understands how they're doing this and can explain it in laymen's terms.

Thanks

After reading there web site http://www.osmoblue.com they talk a lot about Pressure Retarded Osmosis.

There have been Journal of Membrane Science talked about about making power from osmosis in 1981 and has a bunch of articles on it. I read a few of the article, but I don't see how this would work to make power. If this would work why has no one made it work in the last in the last 22 years?

That's just it they are claiming new materials with here to for untested properties ! I think Ive heard something like this before - and it makes really really good fertilizer !?!

Time will tell ! Big AL !

Thought I smelled something while I was reading it.