Axil, there is nothing in the latest best writeup of the Cravens demo that shows excess heat!
The differential temperature data comes from thermocouples sealed into the globes which have different atmospheres. The D2 (reducing) atmosphere is known (from the TC datasheet) to lead to possible drift errors in the not industrially robust thermocouples which would exactly cause the stated apparent result. H2 vs D2 leads to different diffusion rates and therefore drift.
So I don't see how you can know SmCo5 magnets generate excess heat via nuclear effects. Even if the Craven demo were proven to mean real excess heat and therefore (possibly) nuclear level effects, there is absolutely no way to know which element of the demo causes that effect.
'Golden Balls' Cravens
http://www.infinite-energy.com/images/pdfs/NIWeekCravens.pdf
On excess heat
QuoteThe four-inch spheres don’t look special except for the temperature sensor
inserted to measure its core temperature. Calibration studies,
using a similar sphere, show that the warm sphere is generating
1 watt heat at ΔT of 4°C
on the nuclear origin of the heat
QuoteMost importantly, there is no power connected
to the sphere. It just sits and stays warm for
days/months on end.