Anyway, sooner or later I hope he will get around to testing this thing in a large calorimeter.
JedRothwell Geez Louise, he doesn't have to do that! With the power ratio he claims, all he has to do is stick a heat flow transducer on the exterior of his large reactor. Two HFT's if he wants to go deluxe. Any small non-uniformity in the heat flux through the casing won't matter compared to the claimed power gain. A control run would be the same thing, same heater power, just mesh with no Pd as Alan Smith astutely suggested. Relatively low cost. The only issue is getting an HFT with the right sensitivity and operating temperature range. Any of the manufacturers of those things could help with that. I bet it'd be less than $1K and would give a resoundingly positive answer if the claim is even close to correct.