Ransompw is desperate to justify his faith in Rossi, but this experiment is hardly the one to do it, for several reasons:
1) If half the liquid is escaping the hose as steam as ransom claims, then there should be a flow of gas at the output close to 1 L/s. There is no way the gas coming out of that hose represents 1 L/s. This has been discussed at some length, and there are youtube videos showing what it might look like. As I argue in the comments, anyone with a 1 kW electric kettle can verify for themselves what 1 L/s steam formation underwater looks like. Lewan's video is not even close. 2) One possibility to account for the extra liquid is simply in the form of very wet steam; i.e. entrained droplets. The water is clearly boiling at the bottom of some sort of chimney, and the steam that forms will dominate the volume, and move through the hose much faster than the water, and entrain a good deal of it as a mist. Rossi could easily design his chimney to promote this sort of mist formation using a nozzle, or even some kind of ultrasonic mister. It is certainly in his interest to do so. 3) Lewan was careful to monitor the fluid input, but the power input was not monitored, and this is the run that Rossi was famously caught adjusting the power input. So we really don't know what the power input was. At least not all the time. 4) Even if half the water was converted to steam, that amounts to 4000 Wh of energy, less the 1100 Wh input for 2900 Wh net, or about 10 MJ. That's impressive for the size of the device, but it was not inspected, and represents only a fraction of a liter of chemical fuel. A longer run would have made the need for nuclear more obvious. I recognize that not all of these factors are self-consistent. That is, (1) claims the evidence for the power output is not there, and so the possibilities of the power being present in (3) and (4) are not consistent with (1), so there may be only partial contributions from each of these points. However, it is clear that the experiment is a long distance from unequivocal evidence for heat from nuclear reactions. And importantly, if Rossi was making heat from nuclear reactions, it would be easy to be unequivocal in demonstrating it.
