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> He is really not very good at measuring energy input and heat output.

Calorimetry is actually extremely hard to do right. VERY hard. I stopped following this field a few years ago, but back then EVERY single positive result was due to faulty calorimetry.

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Lubos Motl called out the specifics of the Energy Catalyzer hoax some years ago. I think it had to do with neglecting hydrostatic pressure within the water pipes, which allowed steam to get in.

Just temperature measurement is hard once you start talking accuracy better than a few tenths of a degree C. Add in heat flow, yeah whatever.

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