It' funny when you think about it (peculiar not Ha-Ha) that water and carbon - the two most important constituents of the human body - have a lot in common.
Carbon has two main allotropes, Diamond and Graphite.
carbon black makes three, and fullerine makes four.
Water also has two main allotropes, Water and Ice.
steam or water vapor makes three, this is the first time I've heard about the macro clusters of water. As I mentioned to Richard M there is a book, Water, The Hexagonal Key, which talks about structuring water. The man who operates the ewater.com website says that the technology can be used to tap the ZPE. I'm very interested in what the author of the book says, I wish I had the resources to pursue it.
There have been many reports of the addition
of water to I.C. engines improving their
performance. I would think it's quite likely there's some truth in these reports and that
quite by accident people have stumbled upon a
way of tapping the energy of the Beta-atmosphere
/ Casimir pressure / ZPE - call it what you will.
I wish you the best of luck with this line of investigation, BTW, I prefer ZPE

