Let me add my two cents: If Rossi's e-Cat reactor core can regularly sustain temperatures of 500c or higher, water that is in contact with the reactor core's surface FOR LONG ENOUGH PERIODS will most certainly exceed temperatures 100.1 C, and by quite a large margin.
However, the tick would be to keep the water that has just been transformed into steam contained long enough AT the e-cat reactor core's surface so that it has the chance to absorb the additional heat. Currently this doesn't happen. It's my understanding that the current Rossi prototypes (perhaps for demonstration purposes) do not appear to be built in such a way as to physically contain the transformed steam. It's not designed to behave like a pressure cooker! The water immediately after it has been transformed into steam quickly expands. The steam quickly shoots out the exhaust pipe - i.e. the infamous black hose. IOW, the steam doesn't have a chance to hang around long enough to absorb additional heat and subsequently increase in temperature much above 100.1 C. Some on this list may still recall several months ago the fact that there was a protracted argument precisely based on this specific steam temperature issue. Some argued: WHY was the steam only measured to be 100.1 C when it exited out of the black hose, especially if the e-Cat reactor was claimed to be hundreds of degrees higher. Because the exiting steam temperature seemed to be rigidly fixed at 100.1 C some on this list became absolutely convinced Rossi was involved in a scam operation. However further experiments have proven that such concerns appear to be groundless, particularly (and ironically) when experimenters increased the water flow to show a simple 5 degree temperature increase. (More accurate calometric measurements resulted.) Hopefully, we won't have to revisit that protracted argument again. IOW, I doubt Rossi's e-cats, if engineered properly, would have a problem raising steam to significantly higher temperatures than 100.1 C. Regards Steven Vincent Johnson www.OrionWorks.com www.zazzle.com/orionworks