The resulting HEAT is an order of magnitude greater? Are they saying that this is neither cold nor fusion?
Well, it is certainly "cold" by comparison with a tokamak. And the authors are pretty careful not to speculate on what the ultimate source of the energy is, other than "not chemical".
It is a nuclear “effect” done at low (compared to the Sun) temps (several hundred plus degrees). There are theories as to what is happening, although nobody is sure.
IMO it seems similar to knowing how to create fire without knowing exactly what is happening. There now seems to be too much evidence that something (causing transmutations & heat) is happening, with too many people putting their reputations on the line for this to be a complete hoax. Investors aren’t welcome. Some say it stinks of fraud but I don’t see it. The main issue seems to be that Rossi can’t get a patent for it as anything “cold fusion” related can’t receive one (in USA). His goal is to get the product to market and let the scientists try and argue that it doesn’t work, only once it gets a patent (hence the secrecy of the device internals).
...interesting to watch though :)