In the older small (but allegedly powerful) E-cats, the main (largest and probably most powerful) heater has always heated the cooling water! This is evident because it's wrapped around the *exterior* of the E-cat. This never made sense, by the way, unless the objective was to use electricity to heat water and make steam. In the diagram the heater is shown to be internal. Rossi has never revealed enough about the larger devices to be sure that the image really shows how the heater is configured. If the heater is entirely internal to the water circuit, it's a departure from his previous layout. I see no reason to assume such a departure.
Also, the whole drawing is pretty fanciful because nobody really knows what Rossi puts into the E-cats he has shown much less what was in the ones that were contained in his "megawatt plant". If the secret is only in the catalyst "sauce", I don't understand why Rossi doesn't do a complete disassembly after a test. What secrets could be revealed by seeing some metal powder? Even if he's concerned about that, he could disassemble all the way to the final core and stop there. What's he hiding?
