I have remarked repeatedly that the Rossi digital approach to reactor control was overly complicated, error prone, inherently unreliable, a high maintenance nightmare, and unnecessarily costly. I would like to put forword an alteritive method of control that is analog and simple in the extreme and is everything that the Rossi approach is not.
This alternitive approarch involves the use of high temperature shape memory material.
In detail, a simple way that shape memory materials might be used in a LENR reactor is to form Micro particles out of high temperature shape memory material such as Ti–50(Pt,Ir) or Nitinol (50Ni 50Ti).
At reactor temperatures lower than the operating temperature setpoint, the shape memory micro particle would be shape set to be covered with LENR activating nanostructure like tubercles. But when the temperature increased beyond that setpoint temperature, the topology of the micro-particle would change so that the tubercles would recede and then disappear.
As the LENR reaction lost strength as a reaction to the removal via shape memory adjustment of the tubercle structures from the surface of the micro-particles, the operating temperature of the reactor would naturally drop below the operational temperature set-point, the tubercles would reappear once again as the shape memory surface of the micro-particles would recover its original shape.
In response to the lower temperature and the resultant reappearance of the tubercle surface, the Ni/H LENR reactor would once again increase in temperature due to reappearance of the tubercles on the surface of the micro-particles.
In this simple an uncomplicated way under analog control, the Ni/H reactor would automatically maintain in a failsafe and totally reliable manor a constant thermostatically controlled optemized operating temperature.